Links

Newsletters

• Proficiency News 26 August 2025

• Proficiency News 13th July 2025

• Proficiency News 17th December 2024

• Proficiency News 10th November 2024

• Proficiency News 8th January 2024

• Proficiency News 9th October 2023

• Proficiency News 17th August 2023

• Proficiency News 22nd July 2023

• Proficiency News 1st May 2023

• Proficiency News 11th March 2023

• Proficiency News 29th December 2022
• Proficiency News 11th November 2022
• Proficiency News 1st October 2022
• Proficiency News 31st May 2022
• Proficiency News 30th April 2022
• Proficiency News 27th March 2022
• Proficiency News 17th February 2022

Literature

• Guidance document - RdSAP10 Convention 2.05 - Basements

• Guidance document - Inclusion of previous DEC operational ratings (ORs) on DECs

• Guidance document - Convention 3.12a - Glazing Age (Thermal Spacer)

• Non-domestic Recommendation Reports - What to expect

• Non domestic conventions Issue 8 - Roof / Zone Heights guidance (examples)

• Guidance document - EPCs for Listed Buildings

• Guidance document - RdSAP or SBEM

• Guidance document - Convention 4.08: Zone within a zone

• Guidance document - Convention 6.13: Identifying Indirectly Conditioned Zones

• Guidance document - Convention 7.01 - Lighting Options in SBEM

• Guidance document - Foundation area in SBEM

• High Heat Retention Storage Heaters (HHRSH) for improved EPC rating. Model list current at 21st May 2025.

• Proficiency Flyer April 2022

Conventions

• Domestic Conventions v12 (from 15th June 2025)
  These are the 1st Conventions applicable to RdSAP10

• Domestic Conventions v11.4 (from 1st January 2024 to 14th June 2025)

  These are the last conventions applicable to RdSAP2012 (versions 9.92, 9.93 and 9.94) and superseded by version 12 with the implementation of RdSAP10 on 15th June 2025.

• Non-domestic Conventions v9 (from 1st July 2024)

• DEC Conventions  v2.0 (from 1st November 2018)

Useful Links

• The EPC Register

• Ministry of Housing, Communities & Local Government (MHCLG)

• Department for Business, Energy & Industrial Strategy (DESNZ)

• National Calculation Method for Non Domestic Buildings

• The Energyst magazine (Free digital subscription)

Useful Contacts

• • DesignBuilder Software Ltd
    Stroud House, Russell Street, Stroud, Gloucs, GL5 3AN
  • 01453 755500
  • www.designbuilder.co.uk
  • This email address is being protected from spambots. You need JavaScript enabled to view it.
• • TrustMark
    Arena Business Centre, The Square, Basing View, Basingstoke, RG21 4EB
  • 03335 551234
  • www.trustmark.org.uk