BR
Borough Registry
Multifamily Housing BBL: 1020860016 Article 320 from 2026 (rent regulated)

Prospect Management 609 W 137th St,

609 W 137th Street, Manhattan, NY 10031

Statutory Compliance Finding & Executive Summary

According to official NYC DOB records and Local Law 84 benchmarking, 609 W 137th Street (Manhattan, BBL 1020860016) is subject to NYC Local Law 97 under Article 320 from 2026 (rent regulated). Based on a reported emissions intensity of 6.27 kgCO2e/sq ft against a 2030 statutory limit of 3.35 kgCO2e/sq ft, the property faces an estimated statutory penalty of $30,359 per year starting in 2030 (total 5-year cumulative exposure of $151,795) unless decarbonization retrofits or a Good Faith Effort penalty pause under 1 RCNY § 103-14(i) are implemented.

Reported Carbon Intensity
6.27 kgCO2e/sq ft
LL84 Benchmarking CY2024
2024–2029 Cap & Status
6.75 kg/sq ft
Compliant ($0)
2030–2034 Annual Penalty
$30,359/year
$30,359/yr
5-Year Cumulative Exposure
$151,795
2030–2034 statutory liability

Property Benchmarking & Compliance Ledger

NYC Admin Code § 28-320
Gross Floor Area (GFA)
38,750 sq ft
Dwelling / Commercial Units
36 units
Governing Compliance Pathway
Article 320 from 2026 (rent regulated)
Statutory Excess Rate
$268 per metric ton excess CO2e (§ 28-320.6)

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