Regulatory clarity, sustainability intelligence, and answers for NYC owners.
Stay ahead of NYC building regulations with BES insights, downloadable guides, and answers to the questions our clients ask most.
Regulatory updates and sustainability insights.
The Real Cost of Waiting — LL97 and the future of building performance
A strategic perspective from BES Founder & CEO Beatriz Quinones on risk, asset value, transparency, and the cost of delayed action.
Read article →BES Building Intelligence Platform — architecture & roadmap
One building, every record. How BES turns NYC Open Data, DOB NOW, LL84/LL97, and ENERGY STAR Portfolio Manager into a single validated dossier — with a privacy-first posture.
Read article →Practical resources for NYC building compliance.
Inputs: GFA, occupancy, current EUI. Output: 2024–2050 penalty trajectory.
Request guideEnd-to-end LL84 prep: Portfolio Manager, utility data, DOB NOW filing.
Request guideASHRAE Level II/III scope, RCx triggers, EER/EBEWE filings.
Request guideNYSERDA · Con Edison · National Grid · IRA 179D / 45L / 48 cross-reference.
Request guideFrequently asked questions.
The answers our clients ask for most often — on Local Law compliance, LEED, audits, benchmarking, ESG reporting, and emissions tracking.
LL97 sets greenhouse gas emissions limits for most buildings over 25,000 sq ft in NYC. Limits tighten in 2024, 2030, and 2050. Penalties are $268 per metric ton of CO₂e over the limit, assessed annually. BES helps owners model exposure and plan compliant decarbonization pathways.
The penalty period is here.
Let's engineer the path through it.
Share your property details and BES will return a no-obligation LL97 exposure summary, recommended audit pathway, and incentive eligibility within five business days.