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Durham · County Durham

Cavity wall suitability survey in Durham

Before anyone drills in Durham, the walls are checked properly. The survey is free with an install quote; standalone reports are priced first. A cavity wall survey checks whether your walls can safely be filled and with what.

Book a survey in Durham

Covering Durham and the DH1 district. Free with an install quote; standalone reports are priced before you book.

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Cavity wall suitability survey for Durham properties

Our County Durham coverage takes in Durham (DH1) and nearby Chester-le-Street, Stanley and Bishop Auckland. Durham is one of the main towns we cover in County Durham.

The written result for your Durham property is plain English: what we found, what it means and what, if anything, to do next. A survey in Durham gives you facts before anyone drills: what the wall is, what is in the cavity and whether it is sound.

Exposure matters for every cavity wall. County Durham has a mix of moderate and more exposed sites. Hilltop, coastal and west-facing walls take the brunt of wind-driven rain, so the survey records exposure for each elevation before a material is chosen.

On compliance, in Durham filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Rules in England

Filling a cavity is notifiable building work and needs a building notice or competent-person self-certification if insulation work follows.

Sources: Planning Portal: cavity wall insulation and building regulations; CIGA: CWISC competent person scheme.

What the surveyor checks

Wall construction and thickness at window reveals; cavity width and debris with a borescope; brickwork, pointing, render, sills, gutters and downpipes; signs of damp inside and out; air bricks and flues; joins with neighbours and extensions; and the exposure of each elevation to wind-driven rain.

What is included in Durham

  • Repairs list where needed
  • Fixed install price where suitable
  • Cavity width and debris check
  • Exposure assessment by elevation

Guide prices for Durham

Cavity wall suitability survey guide prices
Cavity wall suitability survey guide pricesGuide price
Suitability survey with an install quoteFree
Standalone survey report (no install quote)£145–£245

The survey is free with an install quote. A standalone report is not insulation, so it is normally standard-rated for VAT; guide prices include VAT. Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.

From enquiry to finish in Durham:

  1. Tell us about the property

    Postcode, property type and why you need the survey.

  2. Survey visit

    Walls, cavity, condition and exposure checked and photographed.

  3. Written result

    Suitable, suitable after repairs, or not suitable.

  4. Fixed price if you want work

    The survey is free when it is for an install quote.

Last reviewed 19 October 2026.

Cavity wall suitability survey in Durham: questions

Do you work on rented homes in Durham?

Yes. Landlords and agents in Durham can book batch visits, and work is arranged around tenants.

Do you cold-call in Durham?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

Is there VAT on a cavity wall survey in Durham?

The survey is free when it is for an install quote. A standalone survey report is not insulation, so it is normally standard-rated for VAT, and the price you are quoted includes it.

Is my Durham home too exposed for cavity insulation?

County Durham has a mix of moderate and more exposed sites, so each wall is judged on its own. The survey records the exposure of each wall before recommending a material, or recommending against filling.

Nearby towns

Book a survey in Durham

Free with an install quote. Written result for every wall.