Speak to the surveyor before choosing a figure
Read the full report and arrange a conversation. Ask which items are urgent, which are normal maintenance for a house of that age and which need another specialist. A strongly worded rating can cover anything from an immediate safety concern to a part of the building that could not be inspected.
Find out whether the defect was visible when you offered. A dated kitchen or worn roof covering may already have been reflected in the price. Hidden decay, serious movement or a drainage failure discovered later is a different basis for discussion.
Read the valuation alongside the condition findings. If the surveyor valued the property at the agreed price while allowing for visible condition, that does not prevent discussion, but it may change how strongly a general repair list supports a reduction.
Get evidence for costs that matter
Obtain quotations when a repair is substantial enough to affect your decision. Give contractors the survey extract and ask what their price includes. A low headline estimate is not useful if it excludes access, scaffolding, plastering, making good or tax.
Some work cannot be priced confidently without opening up the building. In that case, discuss a sensible allowance with the surveyor. Do not present a guess as a fixed bill, and remember that the seller may want their own inspection.
Decide what you are really asking for
You might ask for a price reduction, request that a specific document is produced, or pause while a specialist investigates. Asking the seller to carry out repairs before completion can create problems if the specification, contractor or standard is unclear. A price adjustment often leaves the buyer in control of the eventual work.
Think about the mortgage as well. A lender may retain money, reduce the valuation or require evidence. Tell your broker and conveyancer rather than treating the matter as a private negotiation with the agent.
Insurance availability can be evidence too. If a structural or flood issue produces exclusions, a high excess or no suitable quotation, tell the lender and obtain the terms in writing before deciding how to proceed.
Put a concise case through the agent
State the unexpected finding, attach the relevant evidence and explain the revised figure. Avoid sending the entire report unless your advisers recommend it. A short, factual message is easier for the agent to present to the seller than a list of every comment about sealant and decoration.
Be clear about your intention. If you still want the house and can move promptly once the point is resolved, say so. Do not threaten to withdraw unless that is genuinely the next step.
Expect the seller to have a different view
The seller may refuse, offer part of the amount or challenge the quotation. They may have another buyer or believe the asking price already allowed for condition. Listen to the response and return to your own limit rather than arguing about who is morally right.
Consider value, not just repair cost. Spending £10,000 does not always reduce a property's market value by £10,000, and some work gives you a renewed part of the building. Equally, uncertainty and disruption have a real bearing on what you are prepared to take on.
Leave some room for uncertainty in your own budget. A quotation for visible work may grow once finishes are removed. If the purchase only works when every repair stays at the lowest estimate, the revised price may still leave you exposed.
Record the new agreement properly
If the price changes, tell the conveyancer and lender at once. The contract, mortgage offer, deposit and tax calculation may need updating. Do not rely on an informal exchange of messages with the estate agent.
Any agreement about work, fixtures or money should be reflected in the legal papers. Keep enough time for revised documents before exchange. A hurried promise made to save the chain can become very difficult to enforce after completion.
If you continue at the original price, make that a considered decision instead of pretending the findings no longer matter. Put the likely work into the first-year budget and decide which jobs cannot wait.