Approved building energy calculation software
The Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018, includes a list of software approved for demonstrating compliance with the energy efficiency and carbon emission requirements of the Building Regulations.
For England, Scotland and Wales:
- For domestic buildings, this refers to approved Standard Assessment Procedure (SAP) software, a list of which can be found at: www.bre.co.uk/sap2012.
For England and Wales:
- For non-domestic buildings, this refers to approved Simplified Building Energy Model (SBEM) software (and its interface iSBEM, as well as third party software approved by the relevant Government department), a list of which can be found at: www.ncm.bre.co.uk.
For Scotland:
- For non-domestic buildings, this refers to approved SBEM software (and its interface iSBEM, as well as third party software approved by the relevant Government department), a list of which can be found at: www.scotland.gov.uk.
[edit] Related articles on Designing Buildings
Featured articles and news
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.




















