In the Passive House session at the Winter Summit, I spoke about a Massachusetts DOER report that found that meeting the new energy code in MA (passive house or better in most cases) is cheaper for some building types than traditional construction. Some of you asked to see the report. It was a power point show. On page 34 of this slide deck there is a table.
https://www.mass.gov/doc/building-energy-code-straw-proposal-updated-stretch-code-specialized-opt-in-code-feb-2022/download
Primary Schools
1.1 to 2.8% cost incremental
26 to 39% GH gas emissions reduction
Secondary Schools
0 to 0.5% cost incremental
34 to 39 % GH gas emissions reduction
Small Office
3.4 to 4.5% cost incremental
25 to 50% GH gas emissions reduction
Large Office
-4 to -4.6 % LESS cost incremental
31 to 33 % GH gas emissions reduction
Lab/Office
-.07 to -1.2% LESS cost incremental
29 to 67% GH gas emissions reduction
Multi-family
1.9 to 2.9% cost incremental
45 % GH gas emissions reduction