Insights

NYC Building Energy & LL97 Insights

Practical guidance on Local Law 97 compliance, decarbonization strategy, and energy capital projects for NYC building owners.

Boards October 2026 8 min read

Budgeting LL97 Into a Co-op or Condo Reserve Study

How a board can convert an LL97 projection into a multi-year capital plan, choose a funding mix, and present the result to shareholders or unit owners.

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Planning October 2026 8 min read

What a Decarbonization Plan Contains and How to Evaluate One

The components of a decarbonization plan, the content DOB required for plans filed under its good faith pathway, and the features that make a plan useful to an owner or board.

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Benchmarking September 2026 6 min read

Benchmarking Data Errors and Their Effect on LL97 Penalties

Property use type, gross floor area, and estimated energy data each affect an LL97 penalty calculation. A records review can identify errors before they carry into a filing.

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Leases September 2026 4 min read

Landlord or Tenant: How LL97 Penalty Costs Are Allocated

LL97 penalties are assessed against the owner, and leases determine how costs are shared. An overview of pass-through provisions, allocation methods, and what makes an allocation well supported.

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LL97 March 2026 8 min read

How NYC's Local Law 97 Fines Work and What to Do Before 2030

How LL97 penalties are calculated, which buildings are covered, and why the 2030 compliance period is the one to plan for now.

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Not Sure Where Your Building Stands?

Use our free LL97 calculator to check your building's carbon emissions, compliance status, and estimated fines in under 60 seconds.

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