Tophouse Assessments
Based in Chatham, Kent · Covers Kent, London and the Home CountiesServices
| Service | Regulation | Price |
|---|---|---|
| SAP calculations | Part L | Ask for a quote |
| On-construction EPC | Part L | Ask for a quote |
| Air tightness testing | Part L | Ask for a quote |
| Water efficiency calculations | Part G | Ask for a quote |
| Ventilation commissioning | Part F | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Chatham-based assessor working for builders, contractors and architects across Kent, London and the Home Counties. It provides SAP calculations with as-built EPCs, water calculations, air tightness testing (including Passivhaus projects) and extractor fan testing.
Details taken from the provider’s website on 25 September 2026.
What we’ve checked
Areas covered
Covers Kent, London and the Home Counties
London South East East of England
Compare other providers
SAP calculations in LondonSAP calculations in South EastSAP calculations in East of EnglandOn-construction EPC in LondonOn-construction EPC in South EastOn-construction EPC in East of EnglandAir tightness testing in LondonAir tightness testing in South EastAir tightness testing in East of EnglandWater efficiency calculations in LondonWater efficiency calculations in South EastWater efficiency calculations in East of England