@david.ness if per m2 doesn’t fit the bill, what does? Per person? Wouldn’t that incentivize larger denser buildings?
I saw that Debmark is putting a kgCO2e per m2 policy into place (starting at 12 and ratcheting down to 5 over the next 7 years).
I also saw BRANZ out of New Zealand recommend a total carbon budget (in tons) for office, detached single family, dense residential, and apartments, but the budget is derived from average building sizes.