![](https://housingandclimate.org/wp-content/uploads/2022/10/boston-1448339_640.jpg)
A new zoning code proposed by the City of Boston would require that newly constructed buildings over 20,000 square feet — including labs, offices, and housing projects with more than 15 units — must immediately hit net zero emissions goals. The move accelerates the city’s push to reduce buildings’ reliance on fossil fuels by several years, but is raising concerns among developers.