Housing Design Catalogue Updates

Technical Updates

This page outlines newly added designs and revisions to existing drawings and supporting documents in the Housing Design Catalogue since its release in October 2025. These updates improve clarity, consistency, and technical accuracy, and should be reviewed by all users to ensure they are working from the most current catalogue information.

Date	Region	Design	Document or Sheet #	Update
May 2026	AB	ADU 01, ADU 02	A003_R1, A006_R1	Roof assemblies updated to show a venting space of min. 63mm between roof sheathing and insulation. Note: this update will be made to the other Alberta typologies in a future update.
May 2026	AB	ADU 01, ADU 02	Residential Energy Calculations (PDF, Excel)	Technical Design Packages have been updated to include an energy calculation template to assist Qualified Professionals (QPs) in preparing building envelope energy compliance calculations for submission to the Authority Having Jurisdiction.
July 2026	YT, NWT, NU	ADU - Municipal with Garage	All	New design added.
October 2026	NB, NL, NS, PE	Fourplex 03	All	New design added.

* Last updated: October 2026