SEES
Based in Durley, Southampton, Hampshire · Covers UK-wideAccreditation stated by provider: Elmhurst, ATTMA, BREEAM licensed assessor company, Stroma certifiedNot 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 |
| 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 |
| Retrofit assessment | PAS 2035 | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Sadler Energy and Environmental Services, based near Southampton in Hampshire. It offers Part O overheating assessments (including TM52 and TM59), SAP calculations, air and ventilation testing, water calculations and retrofit assessments for projects across the UK.
Details taken from the provider’s website on 25 September 2026.
What we’ve checked
AccreditationStated by the provider: Elmhurst, ATTMA, BREEAM licensed assessor company, Stroma certified. Not yet checked by us.
Company statusLimited company. Companies House check pending.
InsuranceNot yet checked. Ask to see professional indemnity insurance before you book.
Areas covered
Covers UK-wide
UK-wide South East
Compare other providers
SAP calculations in South EastAir tightness testing in South EastWater efficiency calculations in South EastOverheating assessment in South EastVentilation commissioning in South EastRetrofit assessment in South East