Legal Due Diligence in Commercial Real Estate: Title Review, Lease Review, and Estoppel Certificates

Key Takeaways

Three Legal DD Workstreams

Legal due diligence in a commercial real estate acquisition is not one task. It is three parallel workstreams, each with its own timeline, its own deliverables, and its own failure modes. The three workstreams are title review, lease review, and estoppel collection. They run concurrently during the due diligence period, which typically begins at PSA (Purchase and Sale Agreement) execution and ends when the buyer either removes contingencies or terminates the deal.

Title review answers a foundational question: can the seller convey the property free and clear of liens, encumbrances, and defects that would make the title uninsurable? The buyer orders a title commitment from a title company, retains counsel to review the commitment and its exceptions, orders an ALTA survey to map physical conditions against title records, and works with the title company to remove or insure over any objectionable exceptions. The deliverable is a clean title insurance policy at closing.

Lease review answers the economic question: do the leases support the income the buyer is underwriting? The buyer's team abstracts every lease, extracting the financial and operational provisions that drive cash flow, and compares each abstract against the rent roll and the underwriting model. The deliverable is a complete set of lease abstracts and a list of provisions that require negotiation, adjustment, or seller indemnification.

Estoppel collection answers the confirmation question: do the tenants agree with what the leases say? The buyer (through the seller, who has the contractual relationship with each tenant) requests tenant estoppel certificates confirming rent amounts, lease dates, security deposits, landlord obligations, and the absence of defaults. The deliverable is a signed estoppel from each required tenant, reconciled against the lease abstracts and the underwriting model.

These three workstreams interact. Title review may reveal recorded memoranda of lease that affect lease review. Lease review may surface provisions (such as a purchase option or a right of first refusal) that must be reflected in the title commitment. Estoppel returns may contradict lease provisions identified during lease review. A competent legal DD process manages these interactions by running all three workstreams in parallel, with a single point of coordination, typically the acquisitions lead or the buyer's real estate counsel.

The PSA controls the timeline, the requirements, and the consequences of failure for all three workstreams. This article uses illustrative timelines: a due diligence period of 30 to 60 days for stabilized assets and 45 to 90 days for more complex transactions such as portfolios, ground-leased properties, or assets with significant deferred maintenance, with title commitments taking 7 to 14 days to produce, ALTA surveys 2 to 4 weeks, and estoppel collection from multiple tenants 3 to 6 weeks depending on tenant responsiveness. Actual durations vary by market, title company, and surveyor backlog. Within the DD window, the buyer must complete title and lease review and decide whether to proceed, retrade, or terminate, while estoppel collection typically runs on toward a closing-condition deadline set in the PSA. These timelines overlap, but only if the buyer kicks off all three on day one.

Title Commitment Deep Dive

The title commitment is a preliminary report issued by a title insurance company. It describes the current state of title to the property and sets out the conditions under which the title company will issue a title insurance policy at closing. The commitment is not the policy. It is a proposal: if the seller satisfies certain requirements and the buyer accepts certain exceptions, the title company will insure the title up to the stated coverage amount. Understanding the commitment's structure is the first step in title review.

A standard ALTA (American Land Title Association) commitment has three sections: Schedule A, Schedule B-I (Requirements), and Schedule B-II (Exceptions). Each serves a distinct function, and counsel must review all three with equal care. As the American Bar Association's overview of title and survey issues explains, deleting the commitment's general survey exception and obtaining survey-related endorsements (such as the ALTA 17, 25, and 28 series) depend on delivering a survey acceptable to the title company.

Schedule A: The Basics

Schedule A identifies four things: the effective date of the commitment (the date through which the title company has searched the public records), the proposed insured (the buyer and/or lender), the proposed coverage amount (typically the purchase price for an owner's policy and the loan amount for a lender's policy), and the estate or interest in the property being insured (fee simple, leasehold, or other). It also identifies the current owner of record, called the "vested owner" or "vestee."

Schedule A issues are usually mechanical. Confirm that the vested owner matches the seller entity in the PSA. If the vested owner is "ABC Holdings LLC" but the PSA seller is "ABC Properties Inc," there is a chain-of-title issue that must be resolved before closing, either through a corrective deed, an entity resolution, or a seller representation. Confirm that the estate being insured is fee simple, not leasehold (unless you are buying a leasehold interest, in which case confirm the ground lease terms match). Confirm that the coverage amount matches the purchase price.

Schedule B-I: Requirements

Schedule B-I lists the conditions the title company requires before it will issue the policy. These are actions the seller (or buyer) must complete before closing. Common Schedule B-I requirements include:

• Pay off existing mortgage liens. The seller's existing financing must be satisfied and released of record. The title company will require a payoff letter from the existing lender and will not issue the policy until the release instrument is recorded or the title company holds the payoff funds in escrow.
• Record a deed conveying the property to the buyer. The title company will prepare or approve the deed and require its recording as a condition of issuing the policy.
• Provide entity authorization documents. If the seller is an LLC, partnership, or corporation, the title company will require evidence that the person signing the deed has authority to bind the entity. This includes operating agreements, partnership agreements, corporate resolutions, certificates of good standing, and sometimes a legal opinion from seller's counsel.
• Clear judgment liens and tax liens. If the title search reveals judgment liens, federal tax liens, or state tax liens against the seller or the property, these must be satisfied or released before closing.
• Resolve survey issues. The title company may require an ALTA survey before removing the "survey exception" from Schedule B-II. The survey must show no encroachments, boundary disputes, or other physical conditions that conflict with the legal description.
• Provide gap coverage. The commitment is effective as of a specific date. Transactions that require weeks between commitment issuance and closing need a "gap endorsement" or a title company commitment to insure the gap period (the time between the effective date and the recording date).

Schedule B-I items are the title company's to-do list. They are non-negotiable in the sense that the title company will not issue the policy without them. They are negotiable in the sense that the PSA should allocate responsibility for satisfying them. The seller is commonly responsible for clearing all liens and providing entity documents. Responsibility for the ALTA survey varies by market: the Burke Warren toolkit notes that Illinois PSAs typically require the seller to obtain and pay for the survey, with recent trends shifting that obligation to the purchaser in institutional, high-value transactions.

Schedule B-II: Exceptions

Schedule B-II is where the real work happens. This section lists the matters that the title company will exclude from coverage. In other words, if a claim arises from any of the listed exceptions, the title policy will not cover the loss. Exceptions fall into two categories: standard exceptions (boilerplate that appears on every commitment) and special exceptions (specific to this property).

Standard exceptions typically include:

• Survey exception. "Any facts, rights, interests, or claims that would be disclosed by an accurate survey and inspection of the property." This blanket exception is removed when an ALTA survey that the title company finds satisfactory is delivered. Promulgated-rate states can work differently: in Texas, Procedural Rule P-2 provides for amending the area and boundaries exception to delete all save "shortages in area," based on a survey acceptable to the title company and, for an owner's policy, payment of the premium prescribed in Rate Rule R-16.
• Parties in possession exception. "Rights or claims of parties in possession not shown by the public records." This exception is typically removed or modified when the seller delivers an owner's affidavit and certified rent roll identifying all parties in possession; the exception is then commonly limited to the rights of tenants, as tenants only, under unrecorded leases.
• Mechanic's lien exception. "Liens for labor or material that are not shown by the public records." The seller typically provides an affidavit that no work has been performed on the property within the statutory mechanic's lien period without full payment.
• Tax exception. "Real property taxes and assessments not yet due and payable." This is a standard exception that survives into the final policy. The buyer accepts responsibility for taxes accruing after closing, with a proration at closing to allocate the current-year liability between buyer and seller.

Special exceptions are the items that require line-by-line review. They include recorded easements (utility easements, access easements, drainage easements), recorded restrictive covenants (CC&Rs, development restrictions, use restrictions), recorded leases and memoranda of lease, prior mineral reservations, environmental liens, and any other matters of record that affect the property. Each special exception includes a recording reference (book and page number or instrument number) that allows counsel to pull the underlying document from the county recorder's office and review it in full.

The buyer's counsel reviews each special exception and classifies it into one of three categories: acceptable as is (the exception does not affect the buyer's intended use or value), must be removed (the exception conflicts with the buyer's intended use and the seller must cure it before closing), or requires endorsement (the exception cannot be removed but the title company can provide affirmative insurance over it through a title endorsement). The buyer's title objection letter, delivered within the objection period specified in the PSA, lists each exception that must be removed or endorsed and the specific action required.

ALTA Survey and Title Policy

An ALTA/NSPS (American Land Title Association / National Society of Professional Surveyors) Land Title Survey is the standard survey for commercial real estate transactions. It maps the property's boundaries, improvements, easements, rights of way, encroachments, and other physical features against the legal description in the title commitment. The survey serves two purposes: it gives the buyer a physical picture of the property that cannot be derived from public records alone, and it gives the title company the information it needs to remove the blanket survey exception from Schedule B-II.

The ALTA survey includes a standard set of measurements and certifications, plus a menu of optional items listed in ALTA's "Table A." The buyer selects which Table A items to include based on the property type, the lender's requirements, and the deal's specific concerns. The selections drive cost: the ABA overview cited above notes that many surveyors charge additional fees for each Table A optional item, and the 2026 ALTA/NSPS Table A provides that the exact wording of and fee for any selected item may be negotiated between the surveyor and client.

Table A Optional Items

Under the 2026 ALTA/NSPS Minimum Standard Detail Requirements, which took effect February 23, 2026, and govern surveys contracted on or after that date (a survey contracted earlier but finished later may still use the 2021 standards if that is clearly discussed with the client and title company and noted in the contract, as Beals and Thomas explains), Table A contains 20 optional items (some with sub-items), plus Item 21 for additional items negotiated between the surveyor and client. Items frequently requested in institutional transactions include:

Observed evidence of utilities is a required survey element under Section 5.E.iv of the standards, not a Table A option; Item 11 adds underground utility information on top of it. Table A has no item for access to a public way because physical access is already part of the core survey: Section 5.B.iii of the 2021 standards required the surveyor to show visible evidence of physical access (such as curb cuts and driveways) to abutting streets, highways, or other public or private ways, and, as Gary Kent's summary of the 2026 changes notes, the 2026 text keeps that requirement, now framed as evidence observed in the process of conducting the fieldwork, and states that vehicular access is to be included. The base ALTA policy insures legal access only; per the ABA overview, coverage for actual vehicular and pedestrian access comes from the ALTA 17 endorsement discussed below, which title companies issue after reviewing a survey that depicts curb cuts or entry points giving actual vehicular and pedestrian access from the abutting public street.

Encroachments

One of the survey's most important functions is identifying encroachments. An encroachment occurs when a structure, improvement, or physical feature extends beyond the property boundary, into an easement area, or across a setback line. Common encroachment types include:

• Building encroachment onto an adjacent parcel. Part of the subject property's building crosses the property line onto a neighbor's land. This is a title defect that the title company may refuse to insure over.
• Adjacent building encroachment onto the subject property. A neighbor's structure crosses onto the buyer's property. The buyer may need to negotiate an encroachment agreement or pursue legal remedies.
• Improvement encroachment into an easement. A building, parking lot, or other improvement extends into a utility or access easement. The easement holder (typically a utility company or municipality) may have the right to require removal of the encroaching improvement.
• Setback violation. A building sits closer to the property line than the zoning ordinance allows. This may be a legal nonconforming condition (grandfathered) or an actual violation that exposes the owner to enforcement action.
• Fence line discrepancy. The physical fence does not follow the surveyed boundary. This may indicate a boundary dispute with the adjoining owner or adverse possession exposure if the discrepancy has existed for the statutory period.

Each encroachment identified on the survey must be evaluated for its impact on the transaction. Minor encroachments (a fence 6 inches over the line) may be addressed through an encroachment agreement or a title endorsement. Major encroachments (a building 5 feet into a utility easement) can require remediation, legal action, or deal termination. The ALTA survey shows encroachments graphically on the plat and, if Table A Item 20 is selected, summarizes potential encroachments in a table, making them visible to all parties.

How the Survey Removes the Survey Exception

When the ALTA survey is delivered to the title company, the title company reviews the survey for conflicts with the title commitment. If the survey is clean (no encroachments, no boundary gaps, no unrecorded easements visible on the ground), the title company will generally remove the blanket survey exception from Schedule B-II (where state regulations permit deletion) and replace it with specific survey-related exceptions based on the survey's findings. This is a significant improvement in coverage: instead of a blanket exclusion that covers any and all survey-related issues, the buyer gets coverage for everything except the specific items shown on the survey. The difference between a policy with the blanket survey exception and one without it can be the difference between insurance that covers nothing and insurance that covers the most common sources of title loss.

Title Insurance: Owner's vs Lender's

Title insurance is an indemnity policy that protects the insured against financial loss from defects in title to the property. Unlike most insurance products, which protect against future events, title insurance protects against past events: liens, encumbrances, defects, and other matters that existed as of the policy date but were not discovered in the title search. Two types of title insurance apply in a commercial acquisition: the owner's policy and the lender's policy.

Owner's Policy

The owner's policy insures the named buyer, typically for the full purchase price of the property. Under the 2021 ALTA Owner's Policy, the insured also includes certain successors (by operation of law, merger, dissolution, or entity conversion) and certain grantees such as affiliates, but not a later purchaser. Coverage continues while the insured retains an estate or interest in the land, holds a purchase-money mortgage given by its buyer, or remains liable for warranties given in a later conveyance. If a covered title defect is discovered after closing and the buyer suffers a financial loss, the title company will defend the title and indemnify the buyer up to the policy amount. The owner's policy is a one-time premium, paid at closing, with no ongoing premium payments.

Owner's policy coverage depends on whether the buyer purchases a standard policy or an extended (ALTA) policy. The standard policy covers matters of public record: recorded liens, recorded easements, and other recorded encumbrances that the title search should have found. The extended policy adds coverage for off-record matters: unrecorded liens, unrecorded easements, encroachments, boundary disputes, and matters that a survey would disclose. The extended policy effectively removes the standard exceptions (survey, parties in possession, mechanic's liens) from Schedule B-II and provides affirmative coverage for those risks. Institutional buyers commonly require an extended owner's policy.

Lender's Policy

The lender's policy insures the lender's mortgage interest in the property. The amount of insurance is typically set at the original loan amount, but under the 2021 ALTA Loan Policy the insurer's liability is capped at the least of that amount, the outstanding indebtedness, and the loss in value of the title, so effective coverage shrinks as the loan amortizes. The lender's policy protects only the lender, not the borrower. It does not protect the borrower's equity; only the owner's policy does.

Every institutional lender requires a lender's title insurance policy as a condition of closing. The borrower pays the premium. The lender's policy is issued simultaneously with the owner's policy, and both are based on the same title commitment. The lender's policy typically includes additional endorsements required by the lender, such as the ALTA 9 series (restrictions, encroachments, minerals), ALTA 3.1 (zoning), and the ALTA 28 series (easements and encroachments). These endorsements increase coverage and the premium.

Endorsements

Title endorsements are amendments to the base policy that either add coverage for specific risks or modify standard exceptions. Common endorsements in commercial transactions include:

• ALTA 3.1 (Zoning): Insures that the property's current use complies with applicable zoning ordinances and that the improvements do not violate zoning setback, height, or density requirements. It is one of the most commonly requested commercial endorsements.
• ALTA 9 Series (Restrictions, Encroachments, Minerals; Covenants, Conditions and Restrictions; Private Rights): Provides coverage against loss from restrictions, encroachments, mineral reservations, and other matters. Different versions (9.1 through 9.10) cover different combinations of risks and policy types.
• ALTA 17 (Access): Expands the base policy's coverage, which insures legal access only. It insures against loss if the land does not abut and have actual vehicular and pedestrian access to a designated public street, if that street is not physically open and publicly maintained, or if the insured has no right to use the existing curb cuts or entries along the abutting portion of the street. Access issues are among the most serious title defects because a property without legal access may be landlocked and essentially worthless for its intended use.
• ALTA 28 (Easement, Damage or Enforced Removal) and ALTA 28.1 to 28.3 (Encroachments, Boundaries and Easements): ALTA 28 insures against loss from the forced removal of, or damage to, existing buildings caused by the exercise of easement rights. The 28.1 to 28.3 versions insure against loss from encroachments across boundary lines or into easements. Instead of leaving survey-disclosed matters as uninsured exceptions (the default), these endorsements give the buyer affirmative coverage.
• ALTA 35 (Minerals and Other Subsurface Substances): Insures against loss from the exercise of surface rights by a mineral interest holder. Critical in states where mineral rights have been severed from surface rights (Texas, Colorado, Pennsylvania, and others with active oil, gas, or mining industries). In Texas, which uses promulgated forms, the equivalent coverage is provided through the T-19.2 and T-19.3 Minerals and Surface Damage endorsements.

Endorsement availability and pricing vary by state and by title company. Some endorsements are prohibited in certain states by insurance regulatory authorities. Others are available only in specific factual contexts (for example, the zoning endorsement requires a zoning report or letter from the municipality). Counsel should request all available endorsements during the objection period and negotiate the premiums as part of the overall closing cost allocation.

Lease Review and Abstraction

In an income-property acquisition, the leases are the asset. The buyer is not buying a building; the buyer is buying the right to collect rent from the tenants who occupy the building. Lease review in due diligence is the process of verifying that the income stream the buyer is underwriting actually exists, in the amounts and on the terms the seller has represented. This is a financial exercise as much as a legal one.

The process begins with collecting a complete set of lease documents from the seller. For a multi-tenant property, this includes the original lease for each tenant, all amendments, all guaranty agreements, all subordination agreements, all commencement date agreements, and any side letters or informal modifications. Missing documents are a red flag. If the seller cannot produce the fourth amendment to a lease that materially changed the rent, the buyer has no way to verify the current rent without other evidence (such as the tenant's estoppel, which may take weeks to obtain).

Lease Abstract Fields

A lease abstract is a structured summary of the lease's key provisions. The buyer's team (in-house analysts, paralegals, or outside counsel) prepares an abstract for every lease, using a standardized template that covers the provisions most relevant to underwriting. The standard fields in an institutional lease abstract include:

Provisions That Affect Value

Not every lease provision matters equally to the buyer. The provisions that drive value are the ones that affect the amount, timing, and certainty of the income stream. These are the provisions that the buyer's underwriting model should reflect, and any discrepancy between the abstract and the model is a potential issue.

Rent escalation structure. Fixed escalations (3% annually) are predictable and easy to model. CPI-based escalations introduce inflation risk. Percentage rent in retail leases adds upside but depends on tenant sales performance. The abstract must capture the specific escalation mechanism, the escalation dates, and any floors or ceilings on escalation amounts. A lease that appears to escalate at 3% annually may actually escalate at 3% every other year, or 3% in years 1 through 5 and CPI thereafter. Read the escalation clause carefully.

Renewal options. A renewal option gives the tenant the right to extend the lease at a specified rent or at fair market value. Renewal options at below-market rents reduce the property's reversionary value because the buyer cannot re-lease the space at market when the initial term expires. Renewal options at fair market value are less problematic but still create uncertainty about future rent levels. The abstract must capture the number of renewal options, the length of each renewal term, the notice period, and the rent reset mechanism (fixed, FMV, CPI, or a percentage of then-current rent).

Assignment and subletting. Restrictions on assignment and subletting protect the landlord's control over the tenant mix. Liberal assignment provisions (where the tenant can assign without landlord consent upon a change of control) may allow a creditworthy tenant to be replaced by a weaker one. Profit-sharing provisions (where the landlord receives a share of any sublease premium) create an income stream that the buyer should underwrite. Recapture rights (where the landlord can terminate the lease and recapture the space if the tenant proposes an assignment) give the landlord a re-leasing option. Each of these provisions has a value impact that belongs in the underwriting model.

Co-tenancy and exclusivity. In retail properties, co-tenancy clauses allow a tenant to reduce rent or terminate the lease if specified anchor tenants close or if occupancy drops below a threshold. These provisions create conditional income: the tenant pays full rent only as long as the co-tenancy condition is satisfied. A shopping center with strong co-tenancy protections for its in-line tenants is more sensitive to anchor departures than one without. Exclusivity clauses restrict the landlord from leasing other space to competing uses. A grocery anchor with a broad exclusivity clause may prevent the landlord from leasing to a second food retailer, limiting the property's leasing flexibility and potentially reducing value.

Landlord obligations that exceed the norm. Some leases require the landlord to perform capital improvements at specified intervals (repave the parking lot every 10 years, replace the roof after 20 years) or to maintain the property to a standard above the market norm. These obligations create above-market capital expenditure requirements that the buyer must budget for. If the seller's OM (offering memorandum) includes a below-market CapEx reserve, the lease review should surface the actual obligations and the buyer should adjust the model accordingly.

Early termination and contraction rights. A tenant with an early termination right can exit the lease before expiration, usually with a termination fee (commonly a specified number of months of rent plus unamortized TI and leasing commissions). Contraction rights allow the tenant to return a portion of the space. Both provisions reduce the certainty of the income stream and should be modeled as probabilistic outcomes in the underwriting. A 50,000 SF tenant with a contraction right on 20,000 SF in Year 5 is effectively a 30,000 SF tenant from Year 5 onward in the downside scenario.

Reconciliation Against the Rent Roll

After abstracting every lease, the buyer's team reconciles the abstracts against the seller's rent roll. The rent roll is the seller's summary of current tenants, lease terms, rents, and occupancy. Discrepancies between the abstracts and the rent roll are common and must be investigated. Common discrepancies include:

• Rent amounts that do not match (the rent roll shows $24.00/SF but the lease specifies $23.50/SF for the current year, with a $0.50 escalation effective next month)
• Expiration dates that do not match (the rent roll shows a 2029 expiration but the lease expired in 2027, and the tenant is holding over month-to-month)
• Square footage discrepancies (the rent roll shows 5,000 SF but the lease says 4,800 SF)
• Missing tenants (the rent roll omits a storage tenant or a rooftop antenna lessee)
• Unreported concessions (the rent roll shows no free rent but the lease amendment grants two months of free rent starting next quarter)

Every discrepancy requires explanation from the seller. A clean reconciliation, where every abstract matches the rent roll within rounding, gives the buyer confidence that the income stream is what it appears to be. A messy reconciliation, with multiple unexplained discrepancies, is a yellow flag that warrants deeper investigation and may indicate sloppy property management or, in the worst case, intentional misrepresentation.

Estoppel Certificates

A tenant estoppel certificate is a signed statement by a tenant confirming the key terms of its lease and the current status of the landlord-tenant relationship. The estoppel "stops" the tenant from later claiming that the lease terms were different from what the tenant certified. In an acquisition, estoppel certificates serve as the buyer's independent verification of the lease terms being underwritten. Without estoppels, the buyer relies entirely on the seller's representations about the leases, and the buyer's only remedy if those representations are wrong is a breach-of-contract claim against the seller under the PSA, which may be limited by survival periods and caps and may be difficult or uneconomical to pursue after closing.

Most commercial leases include an estoppel clause that obligates the tenant to deliver a signed estoppel certificate within a specified period (often 10 to 15 days, per Hollander) after receiving a request from the landlord. Some leases make the estoppel obligation a covenant that, if breached, allows the landlord to execute the estoppel on the tenant's behalf (a "deemed estoppel" provision). As Hollander PLLC's guide to estoppel provisions notes, the enforceability and scope of the estoppel clause in the lease significantly affects the buyer's ability to obtain useful estoppels during due diligence.

Standard Estoppel Fields

A standard tenant estoppel certificate requests the tenant to confirm, at minimum, the following:

• Lease identification. The date of the original lease, the identity of the landlord and tenant, and a list of all amendments, side letters, and modifications. The tenant confirms that the listed documents constitute the entire agreement and that there are no unwritten modifications.
• Lease term. The commencement date, the expiration date, and whether the tenant has exercised or intends to exercise any renewal options.
• Rent. The current monthly base rent, the date through which rent has been paid, the current rent escalation schedule, and any percentage rent obligations (for retail tenants).
• Security deposit. The amount of the security deposit currently held by the landlord, including any letters of credit, and whether any portion has been applied to cure a default.
• Concessions. Any outstanding TI obligations, free rent periods, or other landlord concessions that have not been fully performed.
• Defaults. Whether the tenant is aware of any default by the landlord under the lease, and whether the tenant claims any offsets, credits, or deductions against rent. This is the field that matters most to the buyer: a tenant that claims a landlord default has a legal basis for withholding rent, and the buyer inherits that claim.
• Assignment/subletting. Whether the tenant has assigned the lease or sublet any portion of the premises.
• Purchase options. Whether the tenant has or claims any option to purchase the property or any right of first refusal or right of first offer.
• Other agreements. Whether there are any oral agreements, side letters, or other understandings between the landlord and the tenant that are not reflected in the written lease documents.

The Collection Process

Estoppel collection is logistically demanding, particularly for multi-tenant properties. The process typically follows this sequence:

1. Seller sends estoppels to tenants. The PSA usually requires the seller to deliver estoppel certificates to all tenants (or to tenants representing a specified percentage of the property's rentable area or base rent) within a specified period after PSA execution. The seller sends the estoppel form, pre-populated with the lease terms, to each tenant with a cover letter requesting return within the contractual period (often 10 to 15 days).
2. Buyer reviews returned estoppels. As estoppels come back, the buyer's team compares each one to the lease abstract for that tenant. The comparison focuses on the fields most likely to produce discrepancies: rent, expiration date, security deposit, and landlord obligations.
3. Follow up on non-responders. Not every tenant will return the estoppel on time. Some will ignore the request. Some will return it with modifications. Some will refuse to sign without legal review. The seller must follow up, sometimes multiple times. The PSA should specify the minimum estoppel threshold required for closing and what happens if the threshold is not met. Lev describes common thresholds as 100% of major tenants plus 65% to 85% of all tenants by rent or square footage, and notes that most buyer and lender forms require estoppels to be dated within 30 to 60 days of closing.
4. Resolve discrepancies. When a tenant's estoppel contradicts the lease, the discrepancy must be investigated. Is the tenant correct (and the lease was informally modified)? Is the tenant mistaken (and should be asked to correct the estoppel)? Or is the discrepancy irreconcilable (and the buyer must decide whether to accept the risk)?

Timeline management is critical. Estoppel collection is typically the longest lead-time item in legal DD. As an illustrative assumption, a 100-tenant shopping center may take 4 to 6 weeks to achieve the PSA's estoppel threshold, even with aggressive follow-up. Buyers who wait until Week 2 or Week 3 of due diligence to start the estoppel process often run out of time and must either extend the estoppel delivery deadline or the closing date (if the PSA allows it), waive the estoppel requirement (which is risky), or close without the required estoppels and rely on seller representations (which provides weaker protection). The institutional best practice is to send estoppels on day one of the DD period, while confirming that early returns will still satisfy the PSA's estoppel-dating requirement at the scheduled closing date. Because most buyer and lender forms require estoppels to be dated within 30 to 60 days of closing, an estoppel signed in the first week or two of a long DD period can fall outside that window by the closing date.

When the Estoppel Contradicts the Lease

The most consequential scenario in estoppel review is a contradiction between the tenant's estoppel and the lease. As Capital Rivers' guide to estoppel certificates notes, an estoppel certifies facts and circumstances as of its execution date, and tenants are advised to correct any information that is incorrect and not to consent to changes that are not part of the lease. A returned estoppel that differs from the written lease therefore signals a live dispute the buyer must resolve.

Common estoppel-lease discrepancies include:

• Rent disagreement. The lease says rent is $25.00/SF, but the tenant's estoppel says $22.50/SF because the property manager verbally agreed to a rent reduction during the pandemic and never documented it. If the buyer closes and later tries to collect $25.00/SF, the tenant will point to the estoppel and argue that the reduced rent was the agreed amount.
• Expiration date mismatch. The lease shows a 2028 expiration, but the tenant's estoppel says the lease expires in 2030 because the tenant exercised a renewal option that was never formally documented. The buyer is underwriting a 2028 rollover, but the tenant believes it has rights through 2030.
• Landlord obligations. The lease does not mention a landlord obligation to replace the HVAC system, but the tenant's estoppel claims the landlord promised a new HVAC unit by the end of the year. If the buyer closes without resolving this, the tenant will expect the new owner to honor the promise.
• Security deposit amount. The lease says the security deposit is $50,000, but the tenant's estoppel says $30,000 because $20,000 was applied to cover a prior default, and the landlord agreed the tenant did not need to replenish it. The buyer is expecting a $50,000 deposit credit at closing but may only receive $30,000.

Each discrepancy requires resolution before closing. The resolution options are: (a) the seller corrects the issue and obtains a revised estoppel from the tenant, (b) the seller provides an indemnification in the PSA for any loss arising from the discrepancy, (c) the buyer accepts the tenant's estoppel position and adjusts the underwriting, or (d) the buyer uses the discrepancy as a basis for a retrade (purchase price reduction). Option (a) is ideal but often difficult to achieve, especially late in the DD period. Option (b) is common but only as valuable as the seller's creditworthiness and willingness to stand behind the indemnification post-closing. Option (c) is the most common outcome for small discrepancies. Option (d) is reserved for material discrepancies that change the deal's economics.

SNDA Agreements

An SNDA (Subordination, Non-Disturbance, and Attornment) agreement is a three-party contract among the lender, the landlord, and the tenant that governs the relationship between the tenant's lease and the lender's mortgage. In a leveraged acquisition, the buyer's lender will typically require SNDAs from the property's major tenants before closing. The SNDA serves three functions, each reflected in its name.

Subordination. The tenant agrees that its lease is subordinate to the lender's mortgage. This means that if the lender forecloses, the foreclosure sale extinguishes the lease, and the tenant has no right to remain in the property under the terms of the lease. Subordination protects the lender by ensuring that the mortgage has priority over the lease, which gives the lender a clean title to convey to a buyer at foreclosure.

Non-disturbance. In exchange for subordination, the lender agrees not to disturb the tenant's possession if the lender forecloses, as long as the tenant is not in default under the lease. This is the tenant's protection: even though the lease is subordinate, the tenant will not be evicted in a foreclosure. The non-disturbance covenant is what makes subordination palatable to the tenant. Without it, no rational tenant would agree to subordinate its lease because a foreclosure would terminate its occupancy.

Attornment. The tenant agrees to recognize the lender (or the purchaser at a foreclosure sale) as the new landlord and to continue performing its obligations under the lease. Attornment ensures continuity of the income stream after a change in ownership, whether through foreclosure or through a deed in lieu of foreclosure. It prevents the tenant from arguing that the lease was terminated by the change in ownership and that it owes no rent to the new owner.

SNDA negotiations can be contentious. As Lowndes describes, lenders want the tenant not to amend the lease without lender approval, and want a successor landlord after foreclosure not to be liable for, or subject to tenant offsets and defenses arising from, the prior landlord's obligations. Lowndes adds that a tenant can negotiate these terms with the lender, and that some of these lender demands are reasonable and some are not. The buyer's acquisitions team needs to understand these dynamics because SNDA delays can hold up closing. If the lender requires SNDAs from tenants representing 80% of base rent, and the tenants are negotiating the SNDA terms, the closing timeline is in the tenants' hands.

From the buyer's perspective, the key SNDA issue is the non-disturbance provision. A buyer who plans to hold the property long-term wants strong non-disturbance protections for its tenants, because tenant retention is critical to the property's value. If the non-disturbance provision is weak or narrowly drafted, a future foreclosure could displace tenants and destroy the income stream that the buyer underwrote. Counsel should review the SNDA form early in the DD process and negotiate tenant-favorable non-disturbance language before the lender's SNDA is sent to tenants.

Common Retrade Triggers from Legal DD

A retrade is a post-LOI adjustment to the purchase price or deal terms based on findings during due diligence. Legal DD is a common source of retrades in institutional acquisitions because title, lease, and estoppel issues directly affect the deal's economics. The following are frequent retrade triggers from legal DD:

Title-Related Retrades

1. Unclearable title exception. A Schedule B-II exception that the seller cannot remove and the title company will not insure over. Example: a recorded restrictive covenant that prohibits the buyer's intended use (converting an office building to residential). If the covenant cannot be released, the buyer may need to abandon the conversion plan and reprice the deal based on continued office use, or terminate.

2. Encroachment that limits development. An ALTA survey reveals that an adjacent property's retaining wall extends 12 feet into the subject property's development parcel, eliminating 8,000 SF of buildable area. The buyer underwrote the development parcel at $200/SF, so the encroachment represents a $1.6 million reduction in development value.

3. Uninsurable gap in chain of title. A prior conveyance in the chain of title was defective (e.g., a deed signed by only one of two co-owners), and the title company will not insure over the defect without a quiet title action, which could take many months (assume 6 to 12 months for illustration). The buyer may retrade to compensate for the risk and delay, or require the seller to complete the quiet title action before closing.

Lease-Related Retrades

1. Below-market renewal options. The buyer's underwriting assumed the anchor tenant's lease rolls to market rent at expiration in 2028. Lease review reveals that the anchor has two 5-year renewal options at a fixed 10% increase over the initial rent, which is currently 30% below market. The renewal options cap the buyer's income growth on 40% of the property's rentable area for 10 years beyond the initial term. This finding reduces the property's reversionary value and justifies a purchase price reduction.

2. CAM caps that limit expense recovery. The underwriting model assumed full pass-through of operating expenses. Lease review reveals that several tenants have CAM caps (for illustration, a fixed percentage limit on annual increases in controllable expenses, such as 3% to 5%) that limit the landlord's ability to recover increasing costs. In a rising-expense environment, the gap between actual expenses and recoverable expenses grows every year. The buyer should model the cap impact and may retrade if the cumulative shortfall is material.

3. Co-tenancy kick-out rights. A retail property where 60% of in-line tenants have co-tenancy clauses triggered by the departure of one or both anchors. If one anchor's lease expires in 18 months and the anchor has signaled it will not renew, the buyer faces a scenario where 60% of in-line tenants can reduce rent to percentage-only or terminate their leases. This conditional income risk is a legitimate basis for a retrade.

4. Unbudgeted landlord obligations. The seller's pro forma includes $2.00/SF for capital reserves, but lease review reveals that three leases require the landlord to replace the roof within 5 years at an estimated cost of $800,000. The seller's CapEx budget does not reflect this obligation. The buyer should adjust the pro forma and may retrade by the NPV of the unfunded obligation.

Estoppel-Related Retrades

1. Verbal rent reduction confirmed by estoppel. A tenant's estoppel confirms a $3.00/SF rent reduction that was verbally agreed by the property manager but never documented in a lease amendment. On a 20,000 SF tenant, this is $60,000/year in lost income. At a 6.5% cap rate, direct capitalization implies a value reduction of approximately $923,000. That figure assumes the shortfall is permanent. If the reduced rent runs only through the tenant's remaining term before the space re-leases at market, the defensible retrade is the present value of the shortfall over that term. As an illustrative assumption, with 4 years of remaining term and a 7% discount rate, the present value is $60,000 x 3.387 = approximately $203,000. The buyer can retrade by the supportable amount, request the seller to obtain the tenant's agreement to revert to the lease rent (unlikely), or accept the risk with a seller indemnification.

2. Unreported landlord default. A tenant's estoppel discloses that the landlord has been in default of a maintenance obligation for 18 months and the tenant has been withholding a portion of rent in response. The buyer's underwriting did not account for the deferred maintenance cost or the rent shortfall. Both must be priced into the deal.

3. Insufficient estoppel returns. The PSA requires estoppels from tenants representing 85% of base rent, but after 40 days of effort, the seller has obtained estoppels from only 62%. The buyer lacks independent confirmation of the lease terms for 38% of the income stream. The buyer may refuse to close until the threshold is met, negotiate a holdback at closing (funds escrowed until the estoppels are obtained), or retrade to compensate for the unverified income risk.

The common thread across all retrade triggers is the same: a legal DD finding that changes the buyer's economic assumptions. The retrade amount should be defensible, quantified with the same rigor as the original underwriting, and supported by the specific documents (title exception, lease provision, estoppel statement) that gave rise to the adjustment. Retrades based on vague concerns or non-specific risks are weak. Retrades backed by a Schedule B-II exception, a lease clause, or an estoppel disclosure are strong.

Review It in Apers

Related Articles

• DD Checklist by Asset Class. The master checklist that legal DD feeds into. How title, lease, and estoppel findings integrate with physical, environmental, financial, and operational DD workstreams across office, retail, industrial, and multifamily acquisitions.
• Third-Party Reports: Appraisal, PCA, ESA, and Zoning. The ALTA survey is one of several third-party reports ordered during DD. How the survey interacts with the Property Condition Assessment, Environmental Site Assessment, and zoning analysis to build a complete picture of the property's physical and regulatory status.
• Lease-by-Lease Modeling and Tenant Rollover. How lease review findings feed into the cash flow model. Modeling renewal probability, downtime assumptions, re-leasing spreads, and new lease concessions at each tenant's rollover event.
• Free Rent and Abatement: Effective Rent Accounting. How free rent periods identified during lease review affect effective rent calculations and ASC 842 accounting treatment for both landlord and tenant.
• Co-Tenancy and Kick-Out Clauses: Retail Downside. Deep dive into the co-tenancy and exclusivity provisions surfaced during lease review in retail acquisitions, including how to model the conditional income risk these clauses create.