RICS Level 3 Surveys

A Level 3 survey covers the main building inside and out, focusing on construction, condition, defects, and risks. The surveyor will look at accessible areas such as walls, ceilings, floors, windows, roof coverings that can be viewed safely, loft spaces where access allows, and any permanent outbuildings where possible. You’ll also see commentary on issues like damp, timber condition, movement, and signs that repairs or further checks may be needed.

It is not a destructive investigation. Surveyors do not typically lift fitted carpets, move heavy furniture, cut holes, or dismantle services. They also do not run specialist tests on things like electrics, gas, plumbing, heating, drains, or asbestos unless you’ve arranged separate specialist inspections. If something can’t be inspected, or a specialist is needed, the report should flag it so you can act before you commit.

Read our full guide to the difference between a Level 2 and Level 3 survey for more detail.

A Level 3 survey is built for properties where a basic overview is unlikely to give you enough confidence to proceed. It’s most useful when the building is older, has been altered, has unusual construction, or shows signs of problems that could affect the cost and complexity of repairs. For listed homes there is the option for a listed building survey which is an even more in-depth inspection than a Level 3 survey.

It’s commonly chosen for:

• Older homes, period properties, and buildings with visible wear
• Homes that have been extended or altered, especially where paperwork is unclear
• Unusual or non-standard construction
• Properties in poor condition, or where you plan major renovation work
• Situations where you want clearer repair options and risks, not just condition ratings

If you’re buying a newer, conventional property that appears in good condition, a Level 2 survey may be enough for your needs.

Condition ratings help you prioritise what matters. They’re usually grouped from issues that need urgent attention, to items that need repair but are not urgent, to areas with no immediate repairs needed. The report may also flag parts of the property that were not inspected, and any documents the surveyor recommends you obtain. Use the ratings as a starting point, then focus on the surveyor’s explanation of cause, risk, and what to do next.

A Level 3 survey is detailed, but it’s still a visual inspection of what can be accessed safely on the day. Surveyors have to be clear about what they could not see, what they did not test, and where they are advising a specialist follow-up rather than guessing. That is why reports can read cautiously, even when the property is broadly fine.

The most useful way to read the report is to separate: what the surveyor has actually seen, what they are advising you to monitor, and what needs a specialist to confirm. If a section worries you, ask the surveyor to explain the practical impact, what evidence they saw, and what they would do next if it were their purchase.

The biggest house survey red flags are issues that suggest expensive, complex, or uncertain remedial work. People often describe these as the “money pit” risks because costs can escalate once work starts and more defects are uncovered.

Common themes to take seriously include:

• Signs of active movement, not just historic settlement, especially if cracking looks recent or has been freshly covered
• Widespread damp linked to ventilation problems, decayed timber, or ongoing water ingress
• Roof issues such as sagging, defective coverings, or improvised supports that suggest deeper problems
• Alterations or extensions with no evidence of building control sign-off, especially where structural changes may have been made
• Materials or installations that can complicate lending or repairs, such as suspected spray foam insulation in a roof space

If a report flags one of these, the best next step is not to panic or ignore it. Speak to the surveyor, ask what is urgent vs investigatory, and arrange any specialist checks they recommend before you become legally committed.