Choosing a survey level
The EPC assumes a loft insulation depth and the surveyor could not get into the loft. Which document actually saw the loft?
Neither document saw the loft. The EPC assumes a loft insulation depth, which is an assumption in an energy model, not a visit into the roof space. The surveyor could not get into the loft, so the home survey did not see it either. No paper in front of you is an eyewitness account of that insulation. The certificate's chart is not a measurement taken in this roof, and the survey's limit is an unopened hatch. The loft itself remains unseen by both.
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?
Energy assessors may use conventions when they cannot or do not enter a roof, and the certificate then reads as if a depth were known. That is still not the same as looking. A surveyor who records no access is telling you the joists, the insulation, the tank and the underside of the covering were not inspected. You cannot prefer the EPC because it contains a number and the survey contains a limitation. The number was not earned by eyes in this loft. The limitation was.
If you need the loft seen, arrange access and a further look, with the seller's agreement, and ask for the insulation and the roof structure to be described from that visit. Do not quote the EPC depth as what the survey found. Tell the solicitor the loft was not entered. Until someone goes in, both the assumed depth and the uninspected roof space should stay labelled for what they are. The document that actually saw the loft does not exist in this pack.
What should you ask your surveyor?
- Did you enter the loft at all, or was access impossible?
- Are you relying on any insulation depth, or stating that you could not see it?
- What should not be taken from the EPC as if you had measured it?
What are the typical next steps?
- State that the loft was not entered and was not seen.
- Do not adopt the EPC's assumed insulation depth as a survey finding.
- Arrange a further visit with access if the loft must be inspected.
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
If the hatch is only painted shut, does the EPC then count as access?
No. A painted hatch explains why the surveyor may not have forced it. It does not mean the energy certificate saw the loft. Neither document inspected the roof space. Nobody looked into this roof space for either of those documents.
Does insulation visible at the hatch edge confirm the EPC depth?
No. A glimpse at the edge is a glimpse. It is not a measurement of the loft, and it does not turn the certificate's assumption into something the surveyor verified across the roof. A fringe of quilt is not the loft.