NYC Local Law 97
Emissions limits for most buildings over 25,000 sf, tightening sharply in 2030.
NYC Local Law 97Building performance laws in the Northeast
One team for every building performance law you face.
Cities across the Northeast now require existing buildings to cut energy use or emissions, on fixed deadlines with fines behind them. We find the gap, close it with retro-commissioning and measures we verify device by device, and prepare the data your filing stands on.
The laws we work with
Each page has the dates, who is covered and how we help.
NYC Local Law 87
Energy audit and retro-commissioning every 10 years, in the year set by your tax block.
NYC Local Law 87DC BEPS
Cycle 1 closes December 31, 2026; Cycle 2 starts in 2028 at 25,000 sf.
DC BEPSBoston BERDO
Emissions limits since 2025 for larger buildings, net zero in 2050.
Boston BERDOCambridge BEUDO
2026 is the first compliance year for 100,000 sf and larger, net zero in 2035.
Cambridge BEUDOPhiladelphia BEPP
Tune-ups every five years for 50,000 sf and larger.
Philadelphia BEPPMontgomery County BEPS
Site EUI standards, interim at the end of 2028.
Montgomery County BEPSOn site within 48 hours across the Northeast
Same method in every city
Gap check, retro-commissioning, verified savings and the evidence for the filing. Whatever the law, the engineering is the same.
Book a 15-minute check
Tell us the building and the city. We reply within one business day and can be on site within 48 hours in the Northeast.
Prefer to talk? +1 (646) 296-8091 or [email protected]
Summaries as of November 2026. Each city's own guidance is the final word on your building's requirements.