The Pre-Exchange Risk Period

In England and Wales, property transactions are not legally binding until exchange of contracts. Between offer acceptance and exchange — a period that typically lasts eight to sixteen weeks — either party can withdraw without legal penalty. This creates a window of significant risk for sellers, who may have taken their property off the market and begun making plans based on a sale that has not yet been secured.

Survey Issues

One of the most common causes of post-offer problems is the buyer's survey. If a survey identifies significant defects — structural issues, damp, roof problems, or other concerns — the buyer may seek to renegotiate the price, ask the seller to carry out remedial work, or withdraw from the purchase entirely. Sellers who are aware of known issues should consider addressing them before marketing, or pricing the property to reflect them.

Mortgage Valuation Down-Valuation

If the buyer is using a mortgage, the lender will arrange a valuation of the property. If the valuation comes in below the agreed purchase price — a 'down-valuation' — the lender will only lend against the lower figure. The buyer then faces a shortfall that they must either fund from their own resources or use as a basis to renegotiate the price. Down-valuations are more common in rising markets and for properties that are priced at the top of their range.

Buyer Financing Falling Through

A buyer's mortgage offer can be withdrawn if their financial circumstances change — if they lose their job, take on new debt, or if the lender's criteria change. A buyer who claimed to have a mortgage in principle may find that a formal mortgage offer is not forthcoming. This is why verifying a buyer's financial position before accepting their offer is so important.

Chain Collapse

If your buyer is in a chain — selling their own property to fund the purchase of yours — a problem anywhere in that chain can affect your sale. A buyer further down the chain may withdraw, have their mortgage declined, or encounter a legal problem that causes delays. The longer the chain, the greater the risk.

Legal Enquiries and Searches

The conveyancing process involves searches and enquiries that can reveal issues the buyer was not aware of at the time of making their offer. Planning issues, environmental concerns, boundary disputes, or problems with the title can all cause buyers to reconsider. Sellers who have prepared their property information thoroughly before marketing are less likely to encounter surprises at this stage.

Gazundering

Gazundering — where a buyer reduces their offer shortly before exchange — is a risk in any market but is more common when prices are falling or when the buyer believes the seller is under pressure. A seller who has taken their property off the market and made plans based on the agreed price is in a weak position to resist a last-minute reduction.

How to Reduce the Risks

No seller can eliminate these risks entirely, but several steps can reduce them significantly:

• Choose the strongest buyer, not just the highest offer
• Verify the buyer's financial position before accepting their offer
• Prepare your property information thoroughly before marketing
• Respond to enquiries and requests promptly to keep the transaction moving
• Maintain communication with your agent and solicitor throughout the process
• Consider whether to keep the property on the market until exchange