Do I need a survey when buying a house?

You’ve had an offer accepted. Your lender mentions a “valuation”. Job done on the survey front, right? Not quite — and assuming so is one of the more expensive mistakes a buyer can make.

A mortgage valuation is not a survey

When you take out a mortgage, your lender carries out a valuation. It’s important to understand what this is for: it tells the lender whether the property is worth roughly what they’re lending against. That’s it.

A valuation is done for the lender’s benefit, not yours. It’s often a brief, sometimes desktop-based check. It won’t tell you about damp, a failing roof, dodgy wiring, or subsidence. If you want to know the actual condition of the home you’re buying, you need your own survey.

The three survey levels

Surveys in England and Wales come in three standard levels. The right one depends on the age, type and condition of the property.

• Level 1 — Condition Report. The most basic. A traffic-light summary of the property’s condition, with no advice or valuation. Suitable for newer, conventional homes in good condition.
• Level 2 — Homebuyer Report. The most popular choice. It covers the condition of the property, flags problems that need attention, and can include a market valuation. Suitable for most standard properties in reasonable condition.
• Level 3 — Building Survey. The most thorough (sometimes called a full structural survey). A detailed inspection of the structure and fabric of the building, with advice on defects and repairs. The right choice for older, larger, unusual, or heavily altered properties — or anything you’re planning major work on.

A survey is an upfront cost, but a small one relative to the price of the house — and relative to the cost of an undiscovered problem. We include typical figures in our breakdown of how much it costs to buy a house.

Do you legally need one?

No. A survey isn’t a legal requirement, and your lender won’t insist on one beyond their own valuation. But skipping it is a gamble: you’re committing hundreds of thousands of pounds to a property you don’t fully understand. For older homes especially, it’s a false economy.

What to do if the survey finds problems

A survey flagging issues isn’t a disaster — it’s information, and information is leverage. You have options:

• Get quotes. Find out what the repairs would actually cost before you react.
• Renegotiate. It’s entirely reasonable to go back to the seller and ask for a price reduction, or for them to fix the problem before completion. This is a normal part of making an offer and seeing it through.
• Ask your conveyancer. Some issues are legal as much as physical — your conveyancer can advise on guarantees, indemnities and what the seller is obliged to disclose.
• Walk away. If the problems are serious and the seller won’t budge, you aren’t committed until exchange. Better to lose a survey fee than buy a money pit.

The bottom line

The mortgage valuation protects the lender. A survey protects you. For anything other than a modern home in obvious good condition, a Homebuyer Report or a Building Survey is money well spent — and if it turns something up, that’s the survey doing its job.