Welcome To Green House Calcs Ltd

With the growing need for professional and accredited SAP assessors, we at Green House Calcs are pleased to offer our practised and friendly services for Part L difficulties for all new domestic dwellings, extensions and conversions.  

Our membership of the National Homes Energy Rating system (NHER) from National Energy Services leads us to work with expert software, produce externally quality assured work and continue in our professional development. 

Having worked on many diverse projects since our start in 2006, we are confident in providing technically feasible and cost effective solutions. With our backgrounds in thermal design, civil engineering and building design, you can be assured that our work is up to date and industry relevant.