Documents - DesignBuilder Software Ltd For UK EPC and Building Regulations compliance version downloads please visit our Certification UK and Ireland Approved Versions page

You must be logged in to download the software. If you do not have a login and password, click here to register.

  • For a free evaluation install DesignBuilder then select Help->Licence... and click the Evaluate button. Enter your contact details and you will be emailed an evaluation code valid for 30 days.
  • If you have a previous version of DesignBuilder installed you must uninstall it from "Control Panel > Programs and Features" before running this download to install the new version.
]]> https://stage.designbuilder.co.uk/download/release-software?format=html Tue, 28 Apr 2026 11:00:00 +0000 en-GB hourly 1 DesignBuilder v2025.1.1 https://stage.designbuilder.co.uk/download/release-software/825-designbuilder-v2025-1-1-006?format=html DesignBuilder v2025.1.1 Current v2025.1.1.006 release suitable for: EnergyPlus Simulations, Daylighting, CFD and Part-O Overheating simulations.

See also DesignBuilder New Version Feature list

Important note: You must check the Approved Versions page before using DesignBuilder for Certification purposes.

]]> https://stage.designbuilder.co.uk/download/release-software/825-designbuilder-v2025-1-1-006?format=html Current v2025.1.1.006 release suitable for: EnergyPlus Simulations, Daylighting, CFD and Part-O Overheating simulations.

See also DesignBuilder New Version Feature list

Important note: You must check the Approved Versions page before using DesignBuilder for Certification purposes.

]]> andy.tindale@designbuilder.co.uk (Andy Tindale) Release Software Tue, 28 Apr 2026 11:00:00 +0000