LL97 Resource Center
NYC Local Law 97, explained plainly.
Accurate, jargon-free guides to the $268/tCO2e penalty, the 2030 deadline, financing, and compliance — written for the building owners and operators on the hook for it.
Start here
Know your building’s LL97 fine in 30 seconds
Free, no signup — enter any NYC address or BBL.
How to Avoid LL97 Penalties: A Compliance Roadmap
A step-by-step roadmap to avoid NYC Local Law 97 penalties: confirm coverage, benchmark, estimate your $268/tCO2e exposure, retrofit, finance, and report by May 1 — for both compliance periods.
Which NYC Buildings Are Covered by LL97?
Find out whether your building is covered by NYC Local Law 97: the 25,000 sf threshold, multi-building tax lots, condos, and the special compliance paths for certain building types.
LL84 Benchmarking vs LL97: How the Two Laws Connect
LL84 benchmarking and LL97 emissions limits are different NYC laws that work together. Here’s how your annual May 1 benchmarking data feeds the $268/tCO2e LL97 penalty calculation.
C-PACE Financing for LL97 Retrofits: How It Works in NYC
How C-PACE financing helps NYC owners fund Local Law 97 retrofits with little or no upfront cash, repaid through a property assessment — and how it pairs with avoiding the $268/tCO2e penalty.
The LL97 2030 Deadline: What Building Owners Must Do Now
LL97 limits tighten in the 2030–2034 compliance period. Here’s why buildings that pass today can fail in 2030, and the steps owners should take now to avoid the $268/tCO2e penalty.
How LL97 Fines Are Calculated: The $268/tCO2e Penalty, Step by Step
Exactly how NYC Local Law 97 fines are calculated: emissions minus your building’s cap, times $268 per metric ton CO2e, assessed annually. A worked example for building owners.
NYC Local Law 97 Explained: The 2026 Guide for Building Owners
A plain-English 2026 guide to NYC Local Law 97: who it covers, the $268/tCO2e penalty, the 2024–2029 and 2030–2034 compliance periods, and what building owners should do now.
Stay current
LL97 deadlines & rule changes, in your inbox
Short, accurate updates when the law, penalties, or deadlines move. No spam.