Energy-efficient LED lighting in an office
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Improving your rating before an assessment

3 min readUpdated 2026

A few measured changes before an assessment can lift a commercial property's rating, sometimes enough to clear the standard. Here are the ones that tend to make the most difference.

Lighting

Switching to LED throughout is one of the most cost-effective improvements, and it shows up clearly in the assessment.

Heating controls

Modern controls, timers and zoning help a building use energy more efficiently, which the rating reflects.

Insulation and draughts

Reducing heat loss, through insulation, draught-proofing and well-maintained doors and windows, lifts performance.

Get advice first

Before any work, it's worth knowing which changes will actually move your rating. We're happy to point out the worthwhile ones before we assess, so you spend where it counts.

Not sure where to start?

Tell us about your property and we'll point you the right way.