Property Surveys and Valuations: what every buyer needs to know

What you need to know

What is a property survey?

When you buy a property with a mortgage, two separate assessments take place. Most buyers don't realise they're completely different things. The first is the mortgage valuation, carried out for the lender. The second is a survey, commissioned by you, for you.

A mortgage valuation tells the lender whether the property is worth the amount being borrowed. It says almost nothing about the condition of the building. A property survey, done by an independent surveyor, assesses the actual condition of the property, identifies defects, and warns you about potential problems before you commit to the purchase.

The majority of homebuyers skip the survey, assuming the mortgage valuation has covered them. It hasn't. The cost of a survey is a few hundred pounds. The cost of discovering serious structural problems after you've moved in can run into tens of thousands.

The lender's check

The Mortgage Valuation

A mortgage valuation is instructed by your lender and paid for by you. The surveyor visits the property and confirms, primarily, that the property exists, is mortgageable, and is worth at least what you're paying. In some cases it's done from a desk without a physical visit (a desktop or drive by valuation).

The report produced goes to the lender, not to you. You may receive a brief summary, but it won't tell you whether the roof is failing, whether there's damp in the walls, or whether the extension has planning permission. It is not designed to.

Typical cost: £150–£300. Some lenders offer free valuations as part of their product. Either way, the valuation protects the lender's security, not your investment.

Choose the right level

Survey Types

RICS (the Royal Institution of Chartered Surveyors) sets three standard survey levels. The right level depends on the age, type, and condition of the property you're buying.

What to expect

Costs & Timings

Survey costs vary by property size, location, and the level chosen. The table below shows typical ranges. Always get at least two quotes from RICS registered surveyors.

The physical inspection typically takes 1–3 hours on site depending on the property size. You'll usually receive the written report within 3–5 working days of the visit.

Surveys are normally arranged once your offer has been accepted, but before you exchange contracts. Exchanging without a survey in place leaves you legally committed to a purchase you may not have fully assessed.

Don't panic. You have options.

What if the survey finds problems?

A survey flagging issues doesn't necessarily mean you should walk away. What matters is the nature of the problem, how serious it is, and what it will cost to fix. Your options are:

• Renegotiate the price:Get specialist contractor quotes for the remedial work and use them to negotiate a price reduction with the seller. This is the most common outcome.
• Ask the seller to fix it:Before completion, you can request the seller undertakes remedial works at their own cost. This works best for clearly defined defects.
• Pull out of the purchase:Before exchange, you're not legally committed. If the issues are severe enough and the seller won't negotiate, walking away is a legitimate choice, even if it costs you your survey and legal fees to date.

It helps to understand the difference between serious structural issues such as subsidence, significant roof failure, or active damp ingress, and cosmetic issues like dated décor or minor cracks. The former requires specialist quotes and careful consideration; the latter rarely justifies renegotiating.

If the survey identifies something serious, commission a specialist report (a structural engineer, damp specialist, or drainage surveyor) to get a precise cost estimate before you decide your next step.