27 West 23rd street
Office in New York City, NY · 27 West 23rd Street · 10010
At a glance
27 West 23rd street is a 110,250-square-foot office building at 27 West 23rd Street in New York City, New York, built in 1880.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 975,971 kWh |
| Gross floor area | 110,250 sq ft |
| Source record | nyc:19927411:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | — | — | |
| 2023 | 92 | -8 | 39.5 kBtu/ft² | 416 tCO₂e |
| 2022 | 100 | 18.9 kBtu/ft² | 139 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 owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 27 West 23rd Street
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74201, -73.99065
Within ~1 km
Nearby benchmarked buildings
- Penn Southscore 95
Multifamily Housing · 3,391,963 sq ft
- ESRT - Empire State Buildingscore 78
Office · 2,852,257 sq ft
- 11 Madison Avenuescore 77
Office · 2,228,574 sq ft
- 51 Madisonscore 79
Office · 1,485,386 sq ft
- One Madison Avenuescore —
Office · 1,339,997 sq ft
- ConEd Irving Placescore 55
Office · 1,255,204 sq ft
See also: most efficient in New York City · biggest emitters
How does 27 West 23rd street compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide.
At 110,250 sq ft, it is about half of the average floor area of 205,440 sq ft for those buildings. It was built in 1880, 60 years earlier than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 27 West 23rd street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 27 West 23rd street, covering report years 2022–2024. Its ENERGY STAR score went from 100 in 2022 to 92 in 2023 (-8 points); its best year on file was 2022, at 100. Site EUI moved from 18.9 kBtu/ft² (2022) to 39.5 kBtu/ft² (2023), an 109% increase. Reported emissions went from 139 tCO₂e to 416 tCO₂e over the same span (up 199%).
Which law requires 27 West 23rd street to report its energy use?
27 West 23rd street reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:19927411:2024). 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.
More office buildings in New York City
- 325 West 38th Street· 110,188 sq ft · score 94 (A)
- 220 W 19th St (Red Circle NYC Corp)· 110,032 sq ft · score 73 (B)
- 32 Court Street· 110,000 sq ft · score 85 (A)
- ACS_181_Dual Center ACS Administrative Site· 110,000 sq ft · score 53 (D)
- Atlantic 30 Wall Tenant LLC· 110,000 sq ft · score 78 (B)
- Buchbinder & Warren : 611 Washington Street· 110,000 sq ft · score 86 (A)
- Office buildings in New York City· 3,384 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
- Most efficient large buildings in New York City
- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is 27 West 23rd street's energy grade?
27 West 23rd street did not report an ENERGY STAR score in its 2024 disclosure.
How much energy does 27 West 23rd street use?
No energy-use intensity was reported for 2024.
What are 27 West 23rd street's carbon emissions?
No greenhouse-gas emissions figure was reported for 2024.
Where is 27 West 23rd street?
27 West 23rd street is at 27 West 23rd Street, in New York City, New York 10010. Its coordinates are 40.74201, -73.99065 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 27 West 23rd street and when was it built?
27 West 23rd street has 110,250 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1880 as its year built. It is classed as office.
Is 27 West 23rd street covered by Local Law 84 (LL84)?
Yes — it appears in the 2024 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
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About this data
Source: Energy and Water Data Disclosure (Local Law 84 (LL84)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “27 West 23rd street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/27-west-23rd-street-94c54a3f (data as of October 2, 2026).