SAP Calculations

New Build Dwellings, Heavily Glazed Extensions, Change of use to Residential

A SAP Calculation is an asset rating system introduced through Part L to assess the annual energy costs for new (and some existing) dwellings. The calculation measures how much fuel is needed to heat, ventilate and light your home. It indicates a score from 1 to 100+.

A SAP rating of 100 represents zero energy costs for the end-user (so no energy bills), and anything above 100 essentially means you’re exporting energy.

New houses on the Isle of Man must now achieve a minimum SAP score of 88 to comply with the Building Regulations. In 2024 the SAP score will increase to 93, and from 2027, it will increase to 97.

3Co Consultancy Services can help new housing schemes demonstrate compliance with the Building Regulations cost-effectively and in the most practical way.

The practice holds accredited On Construction Domestic Energy Assessor (OCDEA) with Elmhurst Energy in the UK.