Homes are the second biggest source of carbon emissions in the City of St. Louis, according to an energy audit from 2018. (The biggest source: commercial buildings.) If you want to shrink those emissions, a realistic start would be to make homes more energy-efficient. Forcing homeowners to make upgrades is…one way. A less intrusive way would be to require that they simply furnish information—and then market forces, the theory goes, would take care of the rest.
This mechanism already exists in other contexts. Say you're browsing at a big-box store for a new TV
