Ratio Seven
Based in Nantwich, Cheshire · Covers Nationwide including Birmingham and the West MidlandsAccreditation not yet checkedNot yet claimed
Own websiteUK-wide
Services
| Service | Regulation | Price |
|---|---|---|
| SAP calculations | Part L | Ask for a quote |
| Air tightness testing | Part L | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Cheshire-based building consultancy, established in 2008 and working nationwide, including Birmingham and the West Midlands. Offers air tightness testing and SAP calculations.
Details taken from the provider’s website on 24 September 2026.
What we’ve checked
AccreditationNot stated on their website and not yet checked.
Company statusNot stated. Companies House check pending.
InsuranceNot yet checked. Ask to see professional indemnity insurance before you book.
Areas covered
Covers Nationwide including Birmingham and the West Midlands
North West West Midlands UK-wide
Compare other providers
SAP calculations in North WestSAP calculations in West MidlandsAir tightness testing in North WestAir tightness testing in West Midlands