About Building Compliance OS

Building Compliance OSis software for NYC Local Law 97 compliance. It helps NYC building owners and managers estimate each building's emissions, limit and penalty exposure, track deadlines, and generate reports.

Who it is for

Owners and managers of NYC buildings covered by Local Law 97 (buildings over 25,000 square feet), and the boards and Registered Design Professionals they work with.

What it does

• Emissions calculator: estimates annual tCO₂e from your utility data using the LL97 greenhouse gas coefficients for electricity, natural gas, district steam and fuel oil.
• Compliance dashboard: estimated LL97 status and penalty exposure for every building you manage, in one place.
• Gap detection: finds missing utility data and gives each calculation a confidence score.
• Reports: PDF compliance summaries for owners, boards, and the Registered Design Professional who certifies your LL97 filing.

How it works

1. Add a building: its address, square footage and occupancy type.
2. Enter its utility data: electricity, gas and other fuels.
3. See its emissions, compliance status and penalty estimate.

What makes it different

• A free LL97 penalty calculator, with no signup.
• A free plan for one building; paid plans from $149 a month (see pricing).
• Built on LL97's own greenhouse gas coefficients and emissions limits.

Who makes it

Building Compliance OS is a product of Athlete Domains LLC. Questions: support@buildingcomplianceos.com.

Estimates only — not an official LL97 determination.