CORNERSTONE MGMT:21 SOUTH WILLIAM STREET
Multifamily Housing in New York City, NY · 21 SOUTH WILLIAM STREET · 10004
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 31.1 kBtu/ft² |
| Source EUI | 68.7 kBtu/ft² |
| GHG emissions | 70 tCO₂e |
| GHG intensity | 2.9 kgCO₂e/ft² |
| Electricity | 144,830 kWh |
| Natural gas | 2,510 therms |
| Water use | 2,980 kgal |
| Gross floor area | 23,980 sq ft |
| Source record | nyc:56210293:2024 |
Compliance context
Local Law 84 (LL84)
Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Ownership
No owner listed in the disclosure.
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Location
- Address
- 21 SOUTH WILLIAM STREET
- City
- New York City
- State
- New York
- ZIP
- 10004
- Coordinates
- 40.70451, -74.01074
Within ~1 km
Nearby benchmarked buildings
- 55 Waterscore 78
Office · 3,486,407 sq ft
- 225 Liberty Streetscore 81
Office · 2,577,575 sq ft
Office · 2,542,563 sq ft
- One Liberty Plaza (149 BROADWAY)score 75
Office · 2,346,193 sq ft
- 28 Libertyscore 59
Financial Office · 2,200,000 sq ft
- 120 Broadway Holdings, LLCscore 78
Office · 1,910,503 sq ft
See also: most efficient in New York City · biggest emitters
Frequently asked questions
What is CORNERSTONE MGMT:21 SOUTH WILLIAM STREET's energy grade?
CORNERSTONE MGMT:21 SOUTH WILLIAM STREET scores 99 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does CORNERSTONE MGMT:21 SOUTH WILLIAM STREET use?
Its 2024 site energy-use intensity was 31.1 kBtu/ft² (68.7 kBtu/ft² source) across 23,980 sq ft, including 144,830 kWh of electricity and 2,510 therms of natural gas.
What are CORNERSTONE MGMT:21 SOUTH WILLIAM STREET's carbon emissions?
CORNERSTONE MGMT:21 SOUTH WILLIAM STREET reported 70 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2024. Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Dataset updated . Source: Energy and Water Data Disclosure disclosure, record nyc:56210293:2024.