LL97 Resources
Plain-English guides to Local Law 97 — for building owners, co-op boards, and PE/RA firms.
What is Local Law 97?
A plain-English overview of NYC's landmark building emissions law — who is covered, how penalties work, and what the compliance calendar looks like.
Read moreThe 2030 Cliff Explained
LL97 limits tighten dramatically in 2030. This guide explains what changes, which buildings are most at risk, and what to do before the deadline.
Read moreUnderstanding the Good Faith Effort (GFE) Plan
If your building is over its emissions cap, a GFE plan can reduce your penalty. Learn what qualifies, who prepares it, and how to get started.
Read moreLL97 Deadline Calendar 2026
All critical LL97 filing deadlines for the 2026 compliance season — May 1 reports, data collection windows, and key DOB submission dates.
Read moreLL97 vs LL84 vs LL88 — What's the difference?
NYC's energy laws overlap and interact. This guide explains what each law requires, which buildings are covered, and how they work together.
Read moreIRA Federal Incentives for NYC Building Retrofits
The Inflation Reduction Act created significant tax credits and rebates for building electrification and efficiency upgrades. Here's what NYC buildings qualify for.
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