Building defect survey, diagnosing structural issues in period terraced properties London

DEFECT SURVEY

If a specific defect has come to light, a targeted inspection identifies the cause, extent and the most appropriate course of repair — without the cost of a full survey.

Gave a concern about a property defect?

A defect survey is a focused inspection of a specific problem that has been identified in a property. Rather than assessing the whole building, our surveyor concentrates on the issue in question — establishing what has caused it, how serious it is, what it affects and what needs to be done to put it right.

Defect surveys are typically instructed when a specific problem has come to light during a purchase, when a defect has worsened over time, or when an independent assessment is required for insurance, legal or dispute purposes. They are a cost-effective way to get expert clarity on a problem without commissioning a full building survey.

Construction site of a small backyard with a white building and a brick wall, with open door and window frames, construction materials, and tools on the ground.

What the Report Covers

Every defect survey report is written in plain language and structured to give you exactly what you need to act on the findings.

Observations

A detailed description of the defect as observed, including its location, extent and visible symptoms.

Cause

Our assessment of what has caused the defect, drawing on building pathology expertise and on-site evidence.

Recommendations

Clear, practical recommendations for remediation, including whether specialist investigation is required.

Photographs

An annotated photographic schedule documenting the defect clearly for use in insurance claims, disputes or contractor briefings.

Common Defects We Investigate

  • Damp, water ingress and condensation — identifying source, cause and appropriate remedy
  • Cracks in walls, ceilings or floors — assessing whether structural, thermal or cosmetic in origin
  • Subsidence and movement — establishing cause and whether ongoing or historic
  • Timber defects — rot, woodworm and other biological deterioration affecting structural or non-structural elements
  • Roof defects — leaks, failed flashings, deteriorated coverings and inadequate drainage
  • Window and door failures — failed seals, water penetration and draught issues
  • Structural concerns — inadequate supports, missing elements or alterations carried out without proper engineering
  • Chimney and flue defects — deterioration, inadequate lining and fire safety concerns

When to Instruct

During a Purchase

A specific issue has been flagged during a viewing or valuation and you need to understand its significance before proceeding.

Insurance Claims

An independent surveyor's assessment is required to support or contest an insurance claim relating to a specific defect or damage.

Legal Disputes

A defect is the subject of a dispute between neighbours, landlords and tenants, or buyer and seller, and expert evidence is required.

Ongoing Monitoring

A known defect has worsened or you need an independent update on whether a previously identified issue has been properly remedied.

COMMISSION A DEFECT SURVEY

Tell us about the issue and we will advise whether a defect survey is the right approach. Fill out the form and a member of our team will be in touch.