When should I instruct a surveyor?

As soon as your offer is accepted. Reports typically follow the inspection within days, and you want the findings in hand while price and terms can still be discussed.

Can I use the lender's surveyor?

The lender's valuer is instructed by the lender for the lender's purposes. Commission your own report if you want advice you can rely on and question.

Will the surveyor tell me what repairs will cost?

A report identifies and prioritises work and may indicate broad orders of cost, but firm figures come from contractors' quotations for the specific scope.

Is a survey worth it on a new-build?

Often yes, in the form of a snagging inspection. New homes are covered by a warranty for some defects, but an evidenced list submitted to the developer is what gets work done.

Residential surveyor

Residential surveyors: what they do at each stage of a purchase

What a residential surveyor does at each stage of a house purchase, from pre-offer to completion, and when to instruct one.

Find the right surveyor 01706 318200

Last reviewed 31 August 2026

What does a residential surveyor do for a home buyer?

A residential surveyor inspects houses, flats and bungalows and reports to you on their condition, so you can decide whether to proceed, renegotiate or walk away. The instruction usually sits between offer and exchange, but useful work also happens earlier, at viewing stage, and later, immediately before completion. The surveyor acts for you, not the lender or the agent.

At a glance

Acts for: You, the buyer or owner — not the lender, seller or agent.
Best timed: Instructed as soon as your offer is accepted, so findings arrive before exchange.
Typical output: A written report with condition ratings, risks and the questions to put to your conveyancer.
Access needed: The agent or vendor arranges access; loft hatches, meter cupboards and outbuildings should be unlocked.

Stage one: before you offer

A short pre-offer view is not a survey, but it can stop you spending on searches for a property with an obvious problem. It is most useful in competitive markets where you have one viewing and a fast decision to make.

Stage two: between offer and exchange

This is where the main instruction belongs. The surveyor inspects, reports and — importantly — flags matters your conveyancer needs to raise as enquiries: guarantees, building regulations approvals, planning consents, shared drainage, boundaries and rights of way.

If the report changes the picture, this is also the window in which price and terms can still be renegotiated. Once you exchange, that leverage is gone.

Stage three: before completion

On new-build, vacant or long-empty homes a short pre-completion inspection catches what has changed since the survey: removed fittings, a failed boiler, water damage from an unheated winter, unfinished developer work.

How to read what you get back

Condition ratings prioritise, they do not price. A serious rating means act before or soon after purchase, and often means getting a contractor's quotation. A report that recommends further investigation is not the surveyor hedging — it is the point at which a visual inspection has reached its limit and a specialist is required.

Who this is for

A good fit if

First-time buyers who want the risks explained in plain English
Buyers of period, extended or previously altered homes
Anyone whose mortgage offer has come back with a retention or a condition
Owners planning work who need to know what they are building on

Not the right choice if

Commercial premises, mixed-use blocks and portfolios — that is a commercial instruction
Anyone who needs a formal valuation figure with no condition advice
Disputes already in proceedings, which need expert witness terms from the outset

By stage of the purchase

Pre-offer viewing report

A professional second opinion before you commit to an offer.

RICS Level 2 homebuyer report

The standard instruction for a conventional home between offer and exchange.

RICS Level 3 building survey

For older, altered or run-down homes, or where you plan major work.

Pre-completion inspection

A final check before keys change hands.

Period property survey

Traditional construction assessed on its own terms, not modern assumptions.

Flat and leasehold survey

Your demise, the common parts and the service-charge exposure behind them.

New-build snagging survey

An evidenced defects schedule to hand to the developer.

Buy-to-let investment survey

Condition read through the lens of letting and ongoing maintenance.

What to do next

In order, from the point your offer is accepted.

1.Confirm the property's age, construction and alteration history
The agent, the listing and the EPC will usually tell you enough to set the level.
Compare the survey levels
2.Instruct early and tell the surveyor your concerns
Specific worries — a crack, a damp smell, a flat roof — should be named in the instruction so they are addressed directly.
3.Send the report to your conveyancer
Legal enquiries take time. Getting the report to them quickly keeps the transaction moving.

Where this applies

This page describes the purchase process in England and Wales, where the buyer commissions their own survey after an offer is accepted.

In Scotland the seller provides a Home Report, including a single survey, before the property is marketed, so the sequence and the buyer's options differ. Northern Ireland follows its own conveyancing practice.

If your property is in Scotland or Northern Ireland, say so at the outset and the advice will be given for that jurisdiction.

When to bring in a specialist

Structural movement requiring calculations, monitoring or design — structural engineer
Suspected asbestos-containing materials — competent asbestos surveyor
Electrical installation condition — a registered electrician competent to issue a condition report
Blocked, collapsed or shared drainage — CCTV drainage survey
Trees close to the building — arboricultural consultant

Common questions

Limitations and sources

A residential survey is a visual inspection. Floors are not lifted, walls are not opened and services are not tested unless separately commissioned.
Nothing here is legal advice on your contract. Your conveyancer owns the legal title, searches and enquiries.
Guidance given by KJ before an inspection is general information only, and never implies your property has been seen.

Source: RICS · checked August 2026

Source: Scottish Government · checked August 2026

Last reviewed 31 August 2026.

Where to go next

the survey levels themselves — Start here if you know you need a survey but not which one.
a defect that needs diagnosing — Damp, cracking and roof problems are handled as investigations in their own right.
work affecting a shared wall — If you plan work next to a neighbour, party wall duties may apply before you start.

Just had an offer accepted?

Give KJ the address, the property's age and anything that concerned you on the viewing, and you will get the right instruction confirmed quickly.

KJonline

Free surveying guidance across North West England

Hi, I'm KJ. Tell me about the property or the surveying advice you need and I'll help you work out the right next step.

KJ gives general guidance only and has not inspected your property. A professional opinion follows an inspection by a surveyor.