Part L
Energy and SAP calculations
Design-stage and as-built SAP calculations for new and converted homes, with the EPC lodged at completion.
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Energy & performance calculations
Part L evidence support
An accredited energy assessor sets out which details need photographing as a new home is built and reviews the photographs against the design. We collect them and assemble the evidence that goes with the completion-stage BREL report.
When you need it
For new homes, building control can accept the completion figures from the BREL report together with photographic evidence of compliance. Approved Document L asks for photographs of key details, such as insulation continuity and junctions, taken before they are covered up. Once a detail is plastered over, the chance to record it has gone.
The photographs are taken by the site team as work progresses. A clear schedule at the start, and regular checks of what has been sent, avoids gaps at completion.
What is included
Included
- Photograph schedule for each home, based on the design and junction details
- Briefing for the site team on what to capture and when
- Review of submitted photographs against the design, with gaps flagged
- Evidence pack and completion-stage BREL report, issued with the as-built SAP
Priced separately
- As-built SAP calculation, where it is not already part of your SAP service
- Air tightness testing
- Site visits to take photographs on your behalf
- Remedial work where details were not built as designed
Your written quotation confirms the exact scope, what is included and any limits for your building.
What you receive
A photographic evidence pack for each home and the completion-stage BREL report, ready to give to building control and the owner.
Sent as a PDF. We can send it to your building control body or agent on request.
Our reports and testing support the compliance process. Approval and completion decisions remain with your building control body: the local authority, a registered building control approver, or the Building Safety Regulator for higher-risk buildings.
How to prepare
- Design-stage SAP report and BREL report
- Junction details and wall, floor and roof build-ups
- Build programme with key stages
- A named site contact for photographs
- Phone or camera with location, date and time recording switched on
Send what you have. Missing details will not stop an enquiry; we will tell you anything still needed.
How it works
Tell usChoose the service or describe the job.
Written quotationScope, deliverables and price, confirmed in writing.
We manage the workArranged and coordinated by RegulaBuild. Technical work is carried out by appropriately qualified professionals.
Your reportThe output named in your quotation, with any follow-up.
Questions
What is a BREL report?
The Building Regulations England Part L compliance report. It is produced from SAP at design stage and again at completion, and sets out the targets, the home’s results and its specification.
Who takes the photographs?
Usually the builder’s site team, as each stage is built. We tell them what is needed and check the photographs as they come in.
What if a detail was covered before it was photographed?
Tell us early. Building control decides what further evidence it will accept, which may include opening up.
Often booked with
Combine them in one quote request
Part L
Thermal bridging and psi-values
Junction calculations that replace default values in SAP and can improve the result.
Energy calculationsView service
Part L
Air tightness testing
Pressure testing to measure air leakage against the design target, with a certificate for building control.
TestingView service
Where we work
Part L evidence support across England
Request a quote
Discuss part l evidence support
Start with this service and add anything else you need. If you are unsure, say so and we will advise.