# Borough Registry

> Official NYC Local Law 97 statutory carbon liability audit and decision platform for co-op, condo, and commercial property boards.

Borough Registry provides audited statutory calculations, carbon penalty exposure schedules, and board compliance documentation for all 28,501 NYC buildings covered under NYC Local Law 97 (Article 320 and Article 321 of Title 28 of the NYC Administrative Code).

## Core Statutory Ground Truth

- **Governing Law:** NYC Administrative Code Title 28, Article 320 (§ 28-320) and Article 321 (§ 28-321).
- **Statutory Penalty Rate:** Exactly **$268 per metric ton of CO2 equivalent (tCO2e)** emitted in excess of the building's statutory limit (§ 28-320.6).
- **Reporting Deadlines:** Annual compliance reports verified by a registered design professional are due on **May 1** following each calendar compliance year (first filing due May 1, 2025 for CY2024).
- **Compliance Pathways:**
  - **Article 320 (Limits Pathway):** Standard commercial and market-rate multifamily buildings over 25,000 gross square feet must meet declining carbon intensity caps (kgCO2e/sq ft) in 2024–2029 and 2030–2034.
  - **Article 321 (Prescriptive Energy Conservation Measures):** Rent-regulated and certain affordable housing/HDFC co-ops are eligible for the prescriptive pathway, requiring 13 specific energy conservation measures (e.g. heating controls, pipe insulation) with zero annual carbon emissions fines.
  - **Good Faith Effort (§ 103-14(i)(2)):** Permits qualifying buildings to pause carbon penalties for up to two years (2024–2025) if an approved decarbonization contract or capital work schedule is in place.

## Data Sources & Authority

- **Covered Buildings List (CBL):** NYC Department of Buildings (DOB) annual registry of covered properties (28,501 tax lots citywide).
- **Benchmarking Data:** NYC Open Data LL84 Energy and Water Benchmarking (CY2024, dataset `5zyy-y8am`).
- **ESPM Emissions Factors:** NYC DOB Rules (1 RCNY § 103-14) greenhouse gas emission coefficients for grid electricity, steam, #2 fuel oil, and natural gas.

## Public Tools & Lookup

- **Homepage & Search:** [Borough Registry](https://boroughregistry.com/)
- **Statutory Lookup API:** `https://boroughregistry.com/api/buildings/lookup?bbl={bbl}`
  - Accepts 10-digit NYC Borough-Block-Lot (BBL) or street address queries.
  - Returns statutory GFA, occupancy classification, 2024 cap, 2030 cap, reported emissions intensity, annual penalty calculations, and compliance pathway.

## Institutional Reports & Deliverables

- **Official Board Compliance Memo & Statutory Dossier ($495):** A formal 2-page statutory liability audit and 5-year capital mitigation memo for co-op/condo board packets, including verbatim board resolutions and C-PACE financing debt-service schedules.