ATSPACE Ltd is a company specializing in compliance testing and Standard Assessment Procedure (SAP) calculations to assess the energy efficiency of buildings according to UK regulations. With over 30 years of experience in the construction industry, they provide air pressure, air leakage, acoustic, and SAP/EPC calculation tests across the UK for clients ranging from individuals to large construction companies. Their SAP calculations determine a building's energy and CO2 emission ratings and are required for approval under Part L of the UK Building Regulations. They offer fast turnaround times on SAP calculations and Energy Performance Certificate services for both homeowners and national construction firms.