Choosing a survey level
You instructed a Level 3 because the boiler is old. Has anyone safety-tested that boiler?
Nobody on the Level 3 brief has safety-tested that boiler. Choosing Level 3 because the appliance is old widens the building survey. It does not turn the visit into a safety test of the heating. Services on a home survey are visual only. They are not safety-tested, at Level 3 or at any other level, and an ageing boiler is not an exception written into the product.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
An old boiler is a fair reason to want a careful look at the house around it: flues, tanks, stains, ventilation, and the general condition of an older installation as far as it can be seen. That look is still visual. The surveyor does not strip the case and certify the burner, the gas circuit or the safety devices. If you chose Level 3 because the whole house is older or altered, that reason can be sound, and the boiler's age can sit inside it, without changing what a visual service inspection is allowed to claim.
If you need the boiler's safety judged, that is a different instruction to a person whose job is the appliance, not a second pass of the Level 3. Do not read a rating on the heating as a pass or a fail of a safety test that never happened. No survey level guarantees concealed parts, and the inside of a boiler is a concealed working part. Keep the Level 3 for the building, and keep any appliance test as its own written report.
What should you ask your surveyor?
- Will you confirm the boiler was not safety-tested on this Level 3?
- What did you see around the appliance that is only a visual comment?
- Are you recommending a separate appliance inspection rather than another survey day?
What are the typical next steps?
- Read heating comments as visual, not as a safety test.
- Book a separate appliance inspection if you need the boiler tested.
- Do not choose, or re-choose, the level in the hope it tests gas.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Does a Level 2 safety-test the boiler instead?
No. Services are visual and not safety-tested at Level 2 as well.
If the boiler is new, has it been tested by the survey?
No. Age is not what decides the test. The home survey does not safety-test it either way.