Overview
A Purchase and Sale Agreement (PSA) is the definitive contract governing the acquisition of real property—the document that, once signed, obligates the seller to sell and the buyer to purchase a defined parcel of real estate at a specified price and on specified terms. Unlike a letter of intent or term sheet, which records mutual interest and general parameters, a PSA is a binding commitment with legal remedies for breach. Understanding what the PSA actually commits each party to—and what it doesn't—is the essential task for every real property transaction.
Real estate transactions range enormously in complexity. A residential home purchase involves a PSA of 10-20 pages with standardized forms (in most states, mandated by the real estate commission), a relatively standardized due diligence process, and a defined closing timeline typically measured in weeks. A commercial real estate acquisition—an office building, retail center, industrial complex, or multifamily property—involves a PSA of 50-100 pages, heavily negotiated representations and warranties, complex due diligence into leases, environmental conditions, capital requirements, and entitlement status, and a closing timeline measured in months. The stakes and complexity differ dramatically; the fundamental structure is the same.
The Purchase and Sale Agreement captures the essential terms agreed between buyer and seller at the time of signing, while preserving the buyer's right to investigate the property thoroughly during a due diligence period before being unconditionally committed to close. This structure reflects the fundamental asymmetry of real estate transactions: the seller knows the property intimately; the buyer must discover what the seller knows through inspection, review of records, and investigation of title. The PSA's representations and warranties allocate the risk of unknown conditions between the parties; the due diligence period gives the buyer the opportunity to convert unknown conditions into known ones.
The concept of "closing conditions"—conditions that must be satisfied before either party is obligated to close—is central to PSA architecture. Buyer's closing conditions protect the buyer against being forced to close if material problems are discovered: clear title, satisfactory due diligence, property in the condition represented, and financing availability. Seller's closing conditions protect the seller against being unable to close for procedural reasons: delivery of required documents, payment of the purchase price, and satisfaction of any obligations the buyer must perform before closing. Sophisticated PSA negotiation is largely a negotiation over the scope of closing conditions and the consequences of their failure.
Key Clauses to Review
Property Description, Purchase Price, and Earnest Money
The foundational commercial terms: the legal description of the property being sold (which must match the legal description in the existing deed and title records), the total purchase price, the earnest money deposit amount and timing, the escrow arrangement for holding earnest money, and the conditions under which earnest money is refundable to the buyer versus forfeited to the seller. Earnest money serves as both a signal of buyer commitment and a liquidated damages mechanism—if the buyer defaults without cause, the seller typically retains the earnest money as their sole remedy. If the seller defaults, the buyer typically receives return of earnest money plus specific performance or additional damages.
Legal description that doesn't match existing recorded title documents—creates title issues at closing. Earnest money that is fully at-risk immediately upon signing, with no inspection or due diligence contingency—exposes the buyer to loss before they've had opportunity to investigate the property. Earnest money provisions that don't clearly specify when and under what conditions the deposit becomes non-refundable. Seller's remedy for buyer default limited solely to earnest money retention when the seller may have significantly greater actual damages. No escrow agent specified—earnest money should be held by a neutral third party, not by the seller's broker or attorney.
Due Diligence Period and Inspection Rights
Defines the period during which the buyer has the right to investigate the property—physically, legally, financially, and environmentally—and the conditions under which the buyer can terminate the PSA and receive a refund of earnest money if investigation reveals unsatisfactory conditions. For commercial properties, due diligence typically covers: physical inspection (structural, mechanical, environmental), title review, survey, lease and tenant review, financial analysis (income statements, rent rolls, capital expenditure history), zoning and entitlement review, and lender approval. The due diligence period should be long enough to complete meaningful investigation for the property type.
Due diligence period too short to conduct meaningful investigation for complex commercial properties—rushing due diligence causes buyers to close on properties with undiscovered problems. No "free look" right allowing the buyer to terminate for any reason during an initial period—buyers need full flexibility to walk away if due diligence reveals problems they didn't anticipate. Seller restrictions on buyer's investigation rights (limiting inspections to normal business hours, requiring advance notice too far in advance). No seller obligation to provide requested documents and records—sellers should be required to deliver all material property documents within a defined period.
Representations and Warranties
The seller's promises about the property's condition, title, legal status, and material facts. Standard seller representations include: good and marketable title, no undisclosed liens or encumbrances, no pending litigation or governmental proceedings affecting the property, no material defects known to the seller but not disclosed, compliance with applicable laws and regulations, accuracy of the rent roll and financial statements provided, and the absence of any leases, agreements, or commitments not previously disclosed. Buyer representations typically cover the buyer's authorization, financial capacity, and no broker relationships beyond those disclosed.
Seller representations limited to "to seller's actual knowledge" without defining what inquiry the knowledge standard requires—sellers should be required to make reasonable inquiry before making representations. No representation about compliance with environmental laws—particularly important for industrial and commercial properties. Missing representation that all material leases and agreements have been disclosed—undisclosed agreements that survive closing can dramatically change the property's economics. Representations that are current only as of the signing date with no bring-down obligation at closing—conditions can change between signing and closing. Blanket "as is" provisions that purport to eliminate all seller representations—as-is clauses are valid but don't excuse active concealment of known material defects.
Title Insurance and Survey Requirements
Specifies the form and scope of title insurance the buyer will receive at closing, the survey requirements, and how title defects and survey matters discovered during due diligence are addressed. Title insurance protects the buyer against undiscovered defects in the chain of title—prior mortgages not discharged, forged deeds, missing heirs, boundary disputes, and similar issues. An ALTA/NSPS land title survey identifies encroachments, easements, rights-of-way, and boundary issues that may not appear in the title insurance commitment. Together, title insurance and a current survey provide the buyer with a comprehensive picture of what they're acquiring.
No requirement for an ALTA/NSPS survey for commercial properties—standard boundary surveys may not identify all easements and encroachments. Title policy with excessive standard exceptions that carve out significant protections. No mechanism for the buyer to object to title defects or survey matters discovered before closing and require the seller to cure them. Title objection cure period too short for the seller to realistically resolve significant title defects. No provision addressing how title defects that the seller cannot cure affect the transaction—should the buyer have the right to terminate and receive return of earnest money?
Condition of Property at Closing and Risk of Loss
Addresses what happens if the property's physical condition changes between signing and closing—typically addressed through: the seller's obligation to maintain the property in its current condition through closing, the buyer's right to conduct a pre-closing walkthrough to verify condition, and risk of loss provisions specifying who bears the risk if the property is damaged or destroyed before closing. The treatment of condemnation—partial or total taking by eminent domain before closing—must also be addressed: does the buyer have the right to terminate, or are they required to close at a reduced price with the condemnation award?
No seller obligation to maintain the property between signing and closing. No pre-closing walkthrough right allowing the buyer to verify condition immediately before closing. Risk of loss provisions that leave the buyer at risk for property damage before they have keys or insurance in place. No buyer termination right for casualty or condemnation above a material threshold—forcing the buyer to close on a significantly damaged property they didn't contract to buy. Missing specification of who collects and controls insurance proceeds when casualty occurs between signing and closing.
Closing Conditions, Proration, and Post-Closing Obligations
Specifies the conditions that must be satisfied before each party is obligated to close, how recurring expenses (property taxes, utilities, HOA assessments, rental income) are prorated between buyer and seller as of the closing date, and any obligations that survive closing—typically warranty claims, indemnification obligations, and tenant estoppel or SNDA requirements for commercial properties. Proration methodology—the formula for dividing calendar-year expenses and income between parties based on the closing date—is a common source of disputes and should be specified precisely rather than left to convention.
Closing conditions that are entirely within the seller's control—buyer's conditions should be conditions, not obligations. No financing contingency for buyers who require financing to close—without a financing contingency, buyers who can't obtain financing may forfeit their earnest money. Proration methodology silent on the treatment of disputed expenses or assessments not yet determined as of closing. No provision for reconciliation of prorated amounts that turn out to be estimated—tax prorations based on prior year's taxes should be subject to re-proration when actual tax bills are received. Survival provisions for seller representations that expire too quickly—buyers need adequate time after closing to discover warranty breaches.
Risk Assessment
Title defects are the most fundamental risk in real estate transactions—the risk that the seller doesn't actually own what they're purporting to sell, or that the property is subject to encumbrances that survive closing and impair the buyer's use and value. Modern title insurance provides significant protection against undiscovered defects in the chain of title, but title insurance has limitations: standard exceptions for matters disclosed in the title commitment, for matters that would be disclosed by an inspection, and for matters known to the insured. Title insurance is not a substitute for careful title review—it's protection against what careful review can't find. Buyers who waive title review relying on title insurance take on risks that title insurance doesn't cover.
Environmental contamination risk is the most financially devastating latent defect in commercial real property transactions. Properties with contaminated soil or groundwater can have remediation obligations that exceed the property's value, may render the property unusable for its intended purpose, and create liability to neighboring properties. The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) imposes strict liability for cleanup costs on current and prior owners regardless of fault—a buyer who acquires a contaminated property takes on remediation liability that may far exceed what they paid. The "innocent landowner" defense under CERCLA is only available to buyers who conducted a thorough environmental investigation (a Phase I and, if warranted, Phase II Environmental Site Assessment) before acquiring the property. The PSA should require Phase I ESA completion as a due diligence item and create a termination right if contamination is discovered.
Lease and tenant risk in commercial property acquisitions is a primary driver of acquisition value and a primary source of post-closing disputes. The leases that a buyer underwrote during due diligence may not perfectly match the leases that govern the actual tenancy: side agreements, amendments, rent concessions, and tenant estoppel discrepancies can create significant economic differences between what was represented and what was purchased. Requiring tenant estoppel certificates—statements from tenants confirming the key terms of their leases—as a closing condition creates a mechanism for identifying discrepancies before closing. Without estoppel certificates, buyers close on the seller's representations about leases rather than the tenants' own confirmation of their obligations.
Post-closing purchase price adjustments and earnest money disputes are the most common sources of real estate litigation after deal failures. Earnest money disputes—whether the buyer's termination of a PSA was within the terms that entitled them to return of deposit—are litigated regularly, often for sums that are modest relative to the transaction but large enough to be worth fighting over. The clarity of the due diligence termination right (what triggers it, when it must be exercised, what notice is required) determines whether these disputes are resolved quickly or expensively. Clear, specific termination procedures with defined notice requirements dramatically reduce the frequency and cost of earnest money disputes.
Best Practices
Conduct due diligence systematically and document everything you investigate. For commercial real estate, develop a due diligence checklist calibrated to the property type before executing the PSA—this ensures the due diligence period is long enough to complete meaningful investigation and that nothing material is overlooked. Key categories: title and survey, physical inspection (structural, mechanical, roof, environmental), financial (rent rolls, leases, operating statements, capital expenditure history), legal (zoning, permits, violations, pending proceedings), and operational (property management, service contracts, utility history). Document every item reviewed, every question asked, and every material finding. This documentation supports post-closing warranty claims, provides the basis for informed negotiation of PSA terms, and demonstrates the inquiry that's required for certain legal defenses.
Negotiate representations and warranties that survive closing for a period adequate to discover breaches. The default position in many PSA forms is that representations and warranties do not survive closing—once the deed is transferred, the buyer loses the right to make warranty claims for misrepresentations. For commercial transactions, negotiate survival periods of at least 12-24 months for general representations, with longer periods (or no sunset) for fundamental representations about title, authority, and environmental matters. Without survival, the buyer's protection for seller misrepresentations ends at closing—when many breaches haven't yet been discovered.
Require tenant estoppel certificates as a closing condition in commercial acquisitions. A closing condition requiring estoppel certificates from tenants representing a specified percentage of the property's total rent provides meaningful protection against the risk that leases were misrepresented. The estoppels should confirm: lease date and all amendments, rental rates and escalation schedules, security deposits, lease term and any options, the absence of any landlord defaults, and the absence of any side agreements not reflected in the lease. If estoppels reveal discrepancies from what was represented, the buyer has grounds to either renegotiate or terminate before closing rather than discovering discrepancies in post-closing litigation.
Include a detailed proration methodology in the PSA rather than relying on convention. Real estate closing prorations—the allocation of recurring expenses and income between buyer and seller as of the closing date—are a common source of disputes when the methodology isn't specified in the PSA. Address: the proration date (typically midnight on the closing date), the treatment of property taxes (typically prorated based on the prior year's taxes, subject to re-proration when actual bills are received), security deposit credits, rent collected for the closing month, utility deposits, and any prepaid expenses or deferred obligations. The more specifically the proration methodology is defined, the less room for post-closing dispute.
Frequently Asked Questions
What is the difference between a Purchase and Sale Agreement and a Letter of Intent for real estate?
A Letter of Intent (LOI) records the buyer's and seller's agreement on the key commercial terms of a proposed transaction—price, deposit, due diligence period, closing timeline—but is typically non-binding on the commercial terms (though it may include binding confidentiality and exclusivity provisions). A Purchase and Sale Agreement is the binding contract that definitively obligates both parties: the seller to sell and the buyer to purchase on the specified terms. The LOI is a framework for negotiating the PSA; the PSA is the enforceable commitment. Executing a PSA is a significant legal commitment that shouldn't be made without completing at least preliminary due diligence on title, zoning, and any known physical issues.
What is earnest money and when do I get it back if the deal falls through?
Earnest money is a deposit made by the buyer at signing to demonstrate commitment to completing the purchase. Whether it's refundable depends on why the deal falls through. Most PSAs include contingencies—conditions under which the buyer can terminate and receive a full refund of earnest money: a due diligence contingency (buyer discovers unsatisfactory conditions), a financing contingency (buyer can't obtain financing on acceptable terms), or a title contingency (title defects can't be resolved). If the buyer terminates within a contingency period for a permitted reason, earnest money is fully refundable. If the buyer terminates after all contingencies have been satisfied or waived, the seller typically retains the earnest money as liquidated damages for the buyer's breach.
What is title insurance and do I really need it?
Title insurance protects against defects in the chain of title—prior owners who didn't properly transfer title, undiscovered liens, forged documents, missing heirs, and similar problems that may not appear in a routine title search. There are two types: owner's title insurance (protecting the buyer) and lender's title insurance (required by most mortgage lenders, protecting the lender). Owner's title insurance is almost always worth purchasing—it's a one-time premium paid at closing that provides coverage for as long as you own the property. For commercial properties, an extended coverage ALTA policy that eliminates standard exceptions provides more comprehensive protection than a standard policy. Without title insurance, a title defect discovered after closing may be entirely your problem.
What does "as-is" mean in a real estate purchase agreement?
An "as-is" clause means the buyer agrees to accept the property in its current condition, with all faults and defects, and cannot typically require the seller to make repairs or reduce the price for conditions discovered during due diligence. However, "as-is" does not mean the seller can actively conceal known material defects or make fraudulent representations about the property's condition. Most states impose affirmative disclosure obligations on sellers regardless of as-is language—requiring disclosure of known material defects. As-is clauses shift inspection risk to the buyer and eliminate post-closing warranty claims for physical condition, but they don't eliminate seller liability for fraud or violation of mandatory disclosure requirements.
How long should the due diligence period be?
Long enough to complete meaningful investigation for the specific property. Residential transactions typically close with 30-45 day inspection periods. Simple commercial properties (single-tenant, triple-net lease, good documentation) may be adequately investigated in 30-45 days. Complex commercial properties—multitenant retail centers, office buildings with diverse tenant mixes, properties with environmental concerns, development sites requiring entitlement analysis—typically require 60-90 days or more. The cost of inadequate due diligence far exceeds the cost of a longer period: buyers who close on properties with undiscovered problems have no recourse for conditions that could have been found during due diligence. Negotiate for the time you actually need rather than accepting a seller-preferred short period.