The Halcyon Condominium (301 East 51st Street)
Multifamily Housing in New York City, NY · 301 East 51st Street · 10022
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 52.6 kBtu/ft² |
| Source EUI | 120.5 kBtu/ft² |
| GHG emissions | 1,381 tCO₂e |
| GHG intensity | 5.1 kgCO₂e/ft² |
| Electricity | 2,955,254 kWh |
| Natural gas | 41,544 therms |
| Water use | 5,132 kgal |
| Gross floor area | 270,544 sq ft |
| Source record | nyc:6700662:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 58 | +19 | 52.6 kBtu/ft² | 1,381 tCO₂e |
| 2023 | 39 | -18 | 54.0 kBtu/ft² | 1,350 tCO₂e |
| 2022 | 57 | 49.8 kBtu/ft² | 1,037 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
- 301 East 51st Street
- City
- New York City
- State
- New York
- ZIP
- 10022
- Coordinates
- 40.75547, -73.96797
Within ~1 km
Nearby benchmarked buildings
- 277 Park Avenuescore 64
Office · 1,897,643 sq ft
- 345 Park Ave LPscore 47
Office · 1,783,232 sq ft
- 277 Park Avenuescore 55
Office · 1,745,856 sq ft
Office · 1,682,110 sq ft
- 399 Park Avenuescore 69
Office · 1,671,941 sq ft
- Waldorf Astoria Hotelscore 97
Hotel · 1,666,763 sq ft
See also: most efficient in New York City · biggest emitters
Frequently asked questions
What is The Halcyon Condominium (301 East 51st Street)'s energy grade?
The Halcyon Condominium (301 East 51st Street) scores 58 out of 100 on ENERGY STAR — band C (Below median (55–69)) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Halcyon Condominium (301 East 51st Street) use?
Its 2024 site energy-use intensity was 52.6 kBtu/ft² (120.5 kBtu/ft² source) across 270,544 sq ft, including 2,955,254 kWh of electricity and 41,544 therms of natural gas.
What are The Halcyon Condominium (301 East 51st Street)'s carbon emissions?
The Halcyon Condominium (301 East 51st Street) reported 1,381 tCO₂e of greenhouse-gas emissions (5.1 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:6700662:2024.