Geffner House
Multifamily Housing in New York City, NY · 351 W. 42Nd Street · 10036
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 94 (band A) |
| Site EUI | 90.6 kBtu/ft² |
| Source EUI | 122.0 kBtu/ft² |
| GHG emissions | 859 tCO₂e |
| GHG intensity | 7.3 kgCO₂e/ft² |
| Electricity | 580,607 kWh |
| Natural gas | 4,197 therms |
| Gross floor area | 117,008 sq ft |
| Source record | nyc:10759560:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 94 | +1 | 90.6 kBtu/ft² | 859 tCO₂e |
| 2023 | 93 | -1 | 93.5 kBtu/ft² | 870 tCO₂e |
| 2022 | 94 | 95.0 kBtu/ft² | 826 tCO₂e |
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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 351 W. 42Nd Street
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.75785, -73.99123
Within ~1 km
Nearby benchmarked buildings
- Manhattan Westscore —
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- 1633 Broadway - Paramount Plazascore 75
Office · 2,837,932 sq ft
- PENN 1 (LL97)score —
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- PENN 1 (Offices)score —
Office · 2,439,745 sq ft
- One Bryant Parkscore 62
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- (71003A) Herald Square Macy'sscore 70
Retail Store · 2,192,088 sq ft
See also: most efficient in New York City · biggest emitters
Frequently asked questions
What is Geffner House's energy grade?
Geffner House scores 94 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 Geffner House use?
Its 2024 site energy-use intensity was 90.6 kBtu/ft² (122.0 kBtu/ft² source) across 117,008 sq ft, including 580,607 kWh of electricity and 4,197 therms of natural gas.
What are Geffner House's carbon emissions?
Geffner House reported 859 tCO₂e of greenhouse-gas emissions (7.3 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:10759560:2024.