Southern Assessors
Based in Salisbury, Wiltshire · Covers UK-wide, with offices in London, Bristol and BirminghamServices
| 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 |
| Sound insulation testing | Part E | Ask for a quote |
| Water efficiency calculations | Part G | Ask for a quote |
| Overheating assessment | Part O | Ask for a quote |
| Ventilation commissioning | Part F | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Building compliance firm with a head office near Salisbury and regional offices including one in central London. It provides SAP calculations and on-construction EPCs, Part G water calculations, simplified and TM59 overheating assessments, and air tightness, sound and Part F ventilation testing across the UK.
Details taken from the provider’s website on 25 September 2026.
What we’ve checked
Areas covered
Covers UK-wide, with offices in London, Bristol and Birmingham
London South West UK-wide
Compare other providers
SAP calculations in LondonSAP calculations in South WestOn-construction EPC in LondonOn-construction EPC in South WestAir tightness testing in LondonAir tightness testing in South WestSound insulation testing in LondonSound insulation testing in South WestWater efficiency calculations in LondonWater efficiency calculations in South WestOverheating assessment in LondonOverheating assessment in South West