Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings·Page 48·3.4(d)
Exemption for mixed-use buildings containing dwellings
When work involves a building that contains or will contain one or more dwellings, the provisions of Technical Booklet F1 apply to those dwellings.
where the work involves a building that either before the work or after the work is completed contains one or more dwellings, the provisions of Technical Booklet F1 apply to dwellings.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet F2 - Conservation of Fuel and Power in Buildings Other Than Dwellings.pdf