Do I need a structural survey?
A structural survey is the most comprehensive form of property inspection available, but it isn’t always the right tool for every situation. The scenarios below cover the most common situations, with a direct recommendation for each.
The honest answer
If you’re buying a property in London, particularly anything pre-1970 or anything that has been extended, converted, or altered, a structural survey is one of the most financially protective things you can do. The cost of a survey (£700–£900) is negligible compared to the cost of discovering structural defects after completion, when you have no legal recourse and the repair bill is yours alone.
A mortgage valuation does not protect you. It protects the lender. A Level 2 homebuyer report is a surface inspection that won’t find concealed structural issues. Neither of these is a substitute for a structural survey when there’s genuine structural risk.
By situation
Buying a property built before 1970
Yes, strongly recommendedPre-1970 properties in London frequently have load-bearing walls removed without structural support, original foundations that weren't designed for later extensions, and decades of accumulated alterations. A structural survey is the only way to know what you're buying.
Buying a Victorian or Edwardian terrace
Yes, essentialVictorian and Edwardian terraces are London's most common property type and its most structurally complex. Settlement, subsidence, chimney removal, rear extension, loft conversion, and damp are all common issues that won't show in a homebuyer report.
Visible cracks or movement
Yes, do not delayVisible cracking is a reason to investigate, not ignore. Most cracks are cosmetic, but some indicate active foundation movement requiring immediate attention. A crack report will tell you exactly which category yours fall into.
Buying a new-build property
Snagging inspection insteadNew builds are covered by NHBC warranties and typically have fewer structural concerns. A snagging inspection (identifying defects for the developer to rectify) is more appropriate than a full structural survey.
Buying a flat in a purpose-built block
Consider a defect reportThe structural condition of the building is the freeholder's responsibility. A leasehold flat survey should focus on the condition of your demised area and any known building-wide issues rather than the full structural survey scope.
Planning to extend or convert
Yes, before you planStructural surveys commissioned before a planning application reveal constraints (poor foundations, existing structural issues) that affect what's possible and what it will cost. Finding these after obtaining planning permission is expensive.
Your lender requires a structural report
Yes, requiredIf your mortgage lender has flagged structural concerns or requires a structural report as a condition of the loan, you need one. Our mortgage/lender report is formatted to satisfy lender requirements.
Selling and a buyer has raised structural concerns
Consider a defect reportCommissioning a defect report before sale gives you an honest professional assessment of any issues, allows you to address them or price accordingly, and avoids the sale falling through over unresolved structural concerns.
Not sure? Start with a site visit
If you’re uncertain whether a full written report is needed, a site visit consultation (£390) is the right starting point. An engineer visits, gives you honest verbal advice on what they find, and tells you whether a written report is necessary. The fee is credited in full against any report you commission within 30 days.