521/529 West 111 St Shared Boiler
Multifamily Housing in New York City, NY · 521 West 111 St · 10027
At a glance
521/529 West 111 St Shared Boiler is a 88,320-square-foot multifamily housing building at 521 West 111 St in New York City, New York, built in 1903. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 69.3 kBtu/ft² and 389 tCO₂e of greenhouse-gas emissions. That score is higher than 64% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 81 (band B) |
| Site EUI | 69.3 kBtu/ft² |
| Source EUI | 93.3 kBtu/ft² |
| GHG emissions | 389 tCO₂e |
| GHG intensity | 4.4 kgCO₂e/ft² |
| Electricity | 303,578 kWh |
| Natural gas | 50,818 therms |
| Gross floor area | 88,320 sq ft |
| Source record | nyc:11288018:2024 |
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 owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 521 West 111 St
- City
- New York City
- State
- New York
- ZIP
- 10027
- Coordinates
- 40.80410, -73.96449
Within ~1 km
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How does 521/529 West 111 St Shared Boiler compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. 521/529 West 111 St Shared Boiler's ENERGY STAR score of 81 compares with an average of 63 across the 22,829 that report a score; it scores higher than 64% of them and lower than 34%. Its site EUI of 69.3 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.4 kgCO₂e/ft² is about 15% below the group average of 5.2 kgCO₂e/ft².
At 88,320 sq ft, it is about 13% below the average floor area of 100,951 sq ft for those buildings. It was built in 1903, 49 years earlier than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
What does an ENERGY STAR score of 81 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In New York City, 43% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 521/529 West 111 St Shared Boiler's 69.3 kBtu/ft² across 88,320 sq ft works out to about 6.1 billion Btu (1,794 MWh-equivalent) in 2024. Its source EUI of 93.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 303,578 kWh of electricity and 50,818 therms of natural gas for the year.
Which law requires 521/529 West 111 St Shared Boiler to report its energy use?
521/529 West 111 St Shared Boiler 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:11288018:2024). 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 multifamily housing buildings in New York City
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- 71-36 110th Street - 38296· 88,310 sq ft · score 81 (B)
- 75 Clinton St· 88,309 sq ft · score 15 (D)
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- U.H.O.: 1715 Longfellow Ave· 88,307 sq ft · score 48 (D)
- CYPRESS HILLS - Bldg 5· 88,300 sq ft · EUI 25.8 kBtu/ft²
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Frequently asked questions
What is 521/529 West 111 St Shared Boiler's energy grade?
521/529 West 111 St Shared Boiler scores 81 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 521/529 West 111 St Shared Boiler use?
Its 2024 site energy-use intensity was 69.3 kBtu/ft² (93.3 kBtu/ft² source) across 88,320 sq ft, including 303,578 kWh of electricity and 50,818 therms of natural gas.
What are 521/529 West 111 St Shared Boiler's carbon emissions?
521/529 West 111 St Shared Boiler reported 389 tCO₂e of greenhouse-gas emissions (4.4 kgCO₂e/ft²) for 2024.
Where is 521/529 West 111 St Shared Boiler?
521/529 West 111 St Shared Boiler is at 521 West 111 St, in New York City, New York 10027. Its coordinates are 40.80410, -73.96449 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 521/529 West 111 St Shared Boiler and when was it built?
521/529 West 111 St Shared Boiler has 88,320 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1903 as its year built. It is classed as multifamily housing.
Is 521/529 West 111 St Shared Boiler 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, “521/529 West 111 St Shared Boiler, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/521-529-west-111-st-shared-boiler-2e0ea404 (data as of October 2, 2026).