Why the Purchase Contract Is the Most Important Document in Any Deal

A real estate purchase contract — also called a purchase and sale agreement — is the legally binding document that governs the transaction between buyer and seller. Once signed by all parties, it creates enforceable obligations. Misunderstanding a single clause can cost thousands of dollars or cause a deal to collapse. Understanding what you're signing is not optional.

Essential Clauses in Every Purchase Contract

Purchase Price and Deposit Terms

The contract specifies the agreed purchase price and the deposit amount. The deposit is typically held in trust by a real estate brokerage or lawyer until closing. It forms part of the purchase price — it's not an additional fee. Be clear on what happens to the deposit if either party defaults.

Subject Clauses (Conditions)

Subject clauses are conditions that must be met before the sale becomes firm. Common subjects include:

  • Subject to financing: The buyer must secure a satisfactory mortgage. If they cannot, they may withdraw without penalty.
  • Subject to inspection: The buyer has the right to conduct a professional property inspection and must be satisfied with results.
  • Subject to sale of buyer's property: The purchase depends on the buyer selling their existing home first.
  • Subject to strata document review: For condominiums, the buyer must review and approve all strata documents.

Once all subjects are satisfied and removed in writing, the contract becomes unconditional and binding.

Completion, Possession, and Adjustment Dates

These three dates are distinct and important:

  • Completion date: The legal transfer of ownership and when the buyer's lawyer pays the seller's lawyer.
  • Possession date: When the buyer gets physical access to the property (keys). Often 1–2 days after completion.
  • Adjustment date: The date from which property taxes, strata fees, and utilities are prorated between buyer and seller.

Included and Excluded Items

The contract lists what is included in the purchase price — typically fixtures attached to the property — and what is excluded (items the seller will take). Always explicitly list appliances, lighting fixtures, window coverings, and any other items you expect to be included to avoid post-closing disputes.

Default and Remedies

If a buyer defaults (fails to complete the purchase), the seller may retain the deposit and pursue additional damages. If a seller defaults, the buyer can seek specific performance (a court order to complete the sale) or damages. Understand these consequences before signing.

Pre-Sale Contracts: Additional Clauses to Watch

Pre-construction agreements contain additional clauses not found in standard resale contracts, including:

  • Completion date estimates and extensions: Developers typically reserve the right to extend completion timelines, sometimes by one or more years.
  • Material change clauses: Laws in some jurisdictions require developers to disclose material changes (e.g., design alterations) and give buyers a rescission window.
  • Assignment restrictions: Many pre-sale contracts restrict or prohibit buyers from selling (assigning) the contract before completion.
  • Substitution clauses: Developers may substitute finishes or materials with equivalents — review what "equivalent" means in your contract.

Always Use a Real Estate Lawyer

Even experienced buyers benefit from legal review. A real estate lawyer can flag ambiguous language, negotiate problematic clauses, and ensure your interests are protected. Legal fees for a residential transaction are modest relative to the size of the asset — they are among the best-spent dollars in any property purchase.