Meaning of sold subject to contract

“Sold subject to contract” (often abbreviated to SSTC) means that a seller has accepted a buyer’s offer on a property in principle, but no legally binding contract has yet been made. It marks the point where the parties have agreed a price and broadly agreed terms, but the formal legal process still has to run its course.

The crucial legal point is that the words “subject to contract” signal that neither side intends to be legally bound until formal written contracts are exchanged. In sales of land in England and Wales it is the almost invariable practice for parties to strike a bargain but make clear they are not committing until a formal agreement is drawn up by their solicitors or conveyancers and contracts have been exchanged.

Why it is not binding:

Contracts for the sale of land must satisfy strict legal formalities. Under section 2 of the Law of Property (Miscellaneous Provisions) Act 1989, a contract for the sale of an interest in land must be in writing, incorporate all the agreed terms in one document (or in each part where contracts are exchanged), and be signed by or on behalf of both parties. An offer accepted verbally or by email through an estate agent does not meet those requirements. The label “subject to contract” reinforces that the agreement is provisional and prevents an accepted offer from accidentally becoming an enforceable contract.

What happens during the SSTC period:

During this stage the usual conveyancing steps take place. These typically include the buyer arranging a mortgage and valuation, commissioning a survey, the buyer’s solicitor raising enquiries and carrying out searches, the draft contract being negotiated, and the parties agreeing a completion date. Only when both parties are satisfied and contracts are exchanged does the deal become legally binding. After exchange, either party pulling out generally faces serious financial consequences.

Practical consequences for buyers and sellers:

1. Either side can still withdraw. Until exchange, both buyer and seller are free to walk away without legal liability for the price. That is the key risk built into the whole system.

2. Gazumping remains possible. Because the seller is not bound, they can accept a higher offer from another buyer before exchange. This is known as gazumping. It is not illegal, and estate agents are legally obliged to pass on all offers they receive to the seller, even after an offer has already been accepted, unless the seller has instructed otherwise in writing.

3. Gazundering is also possible. A buyer may reduce their offer at a late stage, often just before exchange, knowing the seller is under pressure.

4. Costs are at risk. If a sale collapses before exchange, both parties can lose money already spent on surveys, searches, valuations and legal fees, with no automatic right to recover it from the other side.

The difference from later stages:

It helps to distinguish three points in the process. “Sold subject to contract” means an offer is accepted but nothing is binding. “Exchange of contracts” is the moment the deal becomes legally binding and a completion date is fixed; at this point deposits are usually paid and neither party can withdraw without significant penalty. “Completion” is when the balance of the money is paid, ownership transfers and the buyer gets the keys.

Ways to reduce the risk during the SSTC period:

Because the SSTC stage leaves both sides exposed, buyers and sellers sometimes use additional measures. These can include moving quickly to exchange to shorten the window in which the deal can collapse, asking the seller to take the property off the market as a condition of proceeding, using a lock-out or exclusivity agreement which binds the seller for a fixed period not to negotiate with anyone else, or considering pre-contract deposit or reservation arrangements. A lock-out agreement does not force the sale to complete, but it can give a buyer a contractual remedy if the seller negotiates elsewhere during the agreed exclusivity period. These arrangements need to be properly drafted to be effective.

Practical summary:

If you see a property listed as sold subject to contract, treat it as spoken for but not yet secured. As a buyer it means you are not committed and cannot be forced to complete, but neither can the seller, so there is a genuine risk of losing the property up to the moment of exchange. As a seller it means you have accepted an offer but retain the freedom to accept a better one, while bearing in mind the reputational and relationship consequences of doing so. The sensible approach for either side is to progress the conveyancing as quickly and efficiently as possible so that the vulnerable SSTC period is kept as short as it can be.