Additions and Alterations:
1. Changes to the prescriptive requirements for the building envelope (specifically wall insulation) for additions (§ 150.2(a)1).
2. With alterations, the prescriptive requirements for mechanical cooling, water heating, and lighting have been revised (§ 150.2(b)).
3. More detailed information on additions and alterations in Chapter 9 of the 2016 Residential Compliance Manual.
