The purchase contract is the moment a deal stops being a conversation and becomes an obligation. Everything before it — the viewings, the offer, the back-and-forth — is reversible. Once this document is signed and any cooling-off period has lapsed, the price, the dates and the risks are locked in. For the agent or advisor guiding a client through it, the skill is not reading every line aloud; it is knowing which clauses actually carry money and risk, and making sure the document matches what was really agreed. This guide maps a real estate purchase contract the way a good pro reads it — by where the danger lives — with a worked example of how one clause can move thousands.
A real estate purchase contract — variously called a purchase agreement, sale and purchase agreement, contract of sale or, in some markets, the deed of sale — is the binding written record of the transaction. It names the parties and the property, fixes the price, and sets out the conditions and deadlines under which ownership will transfer. The exact format and legal weight differ by country: in some places it is drafted by the agent on a standard template, in others by a notary or a solicitor. But the job is universal: it converts a negotiated understanding into terms a court could enforce. Anything agreed verbally that is not in this document effectively did not happen, which is why reading it carefully matters more than any handshake.
The price clause — and what the price includes
The headline number is the easy part. The detail that trips people up is what the price includes. A well-drafted contract lists fixtures and fittings — what stays and what goes — because "the kitchen" or "the light fittings" mean different things to a buyer and a seller. Check whether items like appliances, curtains, garden structures or fitted wardrobes are explicitly in or out. The price clause should also state the currency, confirm the figure in words as well as digits, and clarify whether any transfer tax or fees sit on top. A price that looks agreed can still hide a few thousand in disputed contents, so this is where a careful agent slows down rather than speeds up.
It is also worth a sanity check that the price itself is defensible. If a client is about to commit on paper, the figure should be grounded in comparable evidence, not momentum. Working out how much to offer from comparable sales before the number reaches the contract protects the buyer from overpaying and from a later down-valuation by the lender.
The deposit: how much, when, and when it's at risk
The deposit (sometimes earnest money) is the buyer's skin in the game. The contract should state the amount, the date it is due, who holds it (an escrow account, the notary, or a broker's client account), and — most importantly — the circumstances in which it can be forfeited. A deposit that is fully refundable while conditions are unmet behaves very differently from one that is at risk the moment the ink dries. Read this clause alongside the conditions and the default clause: together they tell you exactly what a buyer stands to lose if the deal falls apart, and for what reasons.
Conditions and contingencies — the buyer's exit routes
Conditions (contingencies, "subject to" clauses, or suspensive conditions depending on the market) are the most important part of the contract for a buyer, because they are the legitimate ways out. The common ones are:
Financing: the deal proceeds only if the buyer secures a mortgage by a stated date — the single most-used safety net.
Inspection or survey: the buyer can renegotiate or withdraw if a structural or condition report turns up problems.
Valuation / appraisal: protection if the property is valued below the agreed price.
Sale of the buyer's existing home: the purchase depends on the buyer completing their own sale first.
Each condition has a deadline, and missing it can quietly convert an escape route into a binding commitment. Read the date and the notice mechanism for every condition, not just the headline that it exists. An agent who diarises these dates the day the contract is signed prevents the most expensive kind of avoidable mistake.
Dates: exchange, completion and the gaps between
Three dates anchor the timeline: signing (when the contract binds), the deadlines for each condition, and completion (when money and ownership change hands). The gap between signing and completion is where financing is finalised and the notary or conveyancer runs title and anti-money-laundering checks. Make sure your client can actually meet each date — particularly the financing deadline — because a date that looked comfortable in the office can become tight once a lender's underwriting queue is involved. Our guide to the documents a buyer needs to assemble explains how to have the file ready so these dates are kept, not chased.
The clauses that decide what happens when it goes wrong
Every contract has a default or breach clause, and it is the one nobody reads until they need it. It sets out the consequences if either side fails to complete: forfeiting or doubling the deposit, a fixed penalty (often a percentage of the price), or a right to demand completion through the courts. Read it together with the deposit clause to understand the true downside. Also look for an appraisal or valuation safeguard — without one, a buyer whose lender down-values the home can be forced to find the shortfall in cash or lose their deposit. Knowing whether the price is realistic before signing is the cheapest insurance against ever triggering this clause.
A worked example: how one clause moves real money
Take a buyer agreeing to purchase a home at €400,000 with a €40,000 (10%) deposit. The contract includes a financing condition with a four-week deadline and a default clause forfeiting the full deposit on non-completion. Two weeks in, the lender's valuation comes back at €380,000 and the buyer can only borrow against that lower figure.
With a valuation safeguard: the buyer invokes the condition before the deadline, withdraws cleanly, and the €40,000 deposit is returned. Cost of the down-valuation: nothing.
Without it, or past the deadline: the buyer must either cover the €20,000 gap in cash to complete, or walk away and forfeit the €40,000 deposit under the default clause.
Same property, same price — a €40,000 swing decided entirely by which clauses were read and which dates were tracked. (Figures are illustrative; deposit percentages and penalties vary by market.)
How pros keep the contract honest
The professional's habit is to read the contract against reality, not just for internal consistency: does the price match the evidence, are the conditions ones the client can actually satisfy, and are the dates achievable given the lender and the documents on hand? This is where a grounded valuation pays for itself. Before a client signs, run the address through Biedradar — enter the property and it pulls comparable sales, a valuation and market signals, then produces a branded property-analysis report in minutes. Handing that report to a client alongside the contract turns "the price seems fair" into evidence they can see, and makes the valuation and financing conditions decisions rather than gambles. The contract still belongs to the notary or solicitor for signing, but the commercial judgment behind it — is this the right price, on the right terms — is exactly the part a well-prepared agent owns.
Frequently asked questions
What is a real estate purchase contract?
It is the binding written agreement that sets out who is buying what, for how much, on what conditions and by when. Once both parties have signed (and any cooling-off period has passed), it commits them to complete the sale on the agreed terms. Everything that was negotiated verbally only counts once it is written into this document.
What are the most important clauses to check in a purchase agreement?
The price and what it includes, the deposit and when it is at risk, the completion date, the conditions (financing, inspection, survey, sale of the buyer's home), the list of fixtures and fittings included or excluded, and the default or penalty clause. Those are where money and risk actually live; the rest is largely standard wording.
Can you back out of a signed purchase contract?
Sometimes, but only through a route the contract gives you. A cooling-off period, an unmet condition such as failed financing, or a contractual right to withdraw can all let a buyer exit cleanly. Walking away for any other reason usually means losing the deposit or facing a penalty, so the exit routes must be understood before signing, not after.
What is the difference between exchange and completion?
Exchange (or signing) is when the contract becomes binding; completion is when the money is paid in full and ownership transfers. The gap between them — days to weeks depending on the market — is when financing is finalised and the notary or conveyancer does their checks. Conditions are typically resolved in that window.
Should an agent explain the contract or leave it to the lawyer?
An agent should make sure the client understands the commercial terms — price, conditions, dates, what is included — and flag anything unusual, but legal interpretation and signing advice belong to a notary, conveyancer or solicitor. The agent's job is to prevent surprises and make sure the paperwork matches what was actually agreed.
