Photographic evidence is now a mandatory requirement under Part L 2021 for new residential developments. It provides a clear record of build quality, showing exactly how insulation, glazing, ventilation, and services were installed. This transparency ensures that what was specified at design stage matches what’s actually built.
Without photographic documentation, the as-built compliance report and Energy Performance Certificate may be questioned or rejected by Building Control. Providing clear, accurate evidence ensures energy models match the actual construction, helping close the “performance gap” and preventing issues such as excessive energy use, failed compliance checks, or the need for costly remedial work.
At minimum, photographs should show: foundations and sub‑floor insulation, external wall insulation and junctions, roof insulation, window and door installations, and installed heating/hot water/ventilation systems with visible make and model labels. Each image must be unique to the dwelling.
Photographs must clearly document key elements of the build for compliance under Part L 2021. Each image should meet the following requirements:
Clear, high resolution to show building components
Unique images, one set per individual property
Time, date, and geo-stamped
Stored in an accessible digital file with clear naming
Provided to the first owner or occupier
If photographic evidence is missing, incorrect, or incomplete, the as‑built compliance report and EPC may be rejected, potentially delaying occupation, increasing costs, or requiring retroactive remedial work. Early planning and correct documentation prevent costly delays or reworks.
At Melin Energy Consultants, we support developers and builders by advising which photos are required and when to take them. We check evidence for compliance, guide file naming and archiving, and review submissions before lodgement. Our goal is to make compliance smooth, clear and robust, protecting build quality and certification validity.
Ensure your new homes are correctly documented and compliant under Part L 2021. Contact Melin Energy Consultants today to learn how we can support your photographic evidence collection and compliance process.
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