The Lawrence Berkeley National Lab released a new study finding that the incremental cost for local governments to enforce energy codes using a traditional review and inspection process can be up to approximately $100 per home, assuming best-practice levels of time spent per home and re-inspection upon failure. This cost is very small compared to the large savings that come from improved enforcement of building energy codes. The study offers several models using third-party inspections that alleviate the enforcement burden and needed expertise for local governments.