Harsen House Condominium (120 W 72th Street)
Multifamily Housing in New York City, NY · 120 W 72th Street · 10023
At a glance
Harsen House Condominium (120 W 72th Street) is a 57,155-square-foot multifamily housing building in New York City, New York, built in 1937. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 27 out of 100 (grade D), a site energy-use intensity of 63.8 kBtu/ft² and 300 tCO₂e of greenhouse-gas emissions. That score is higher than 16% 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 | 27 (band D) |
| Site EUI | 63.8 kBtu/ft² |
| Source EUI | 119.6 kBtu/ft² |
| GHG emissions | 300 tCO₂e |
| GHG intensity | 5.3 kgCO₂e/ft² |
| Electricity | 503,261 kWh |
| Natural gas | 19,303 therms |
| Water use | 1,247 kgal |
| Gross floor area | 57,155 sq ft |
| Source record | nyc:6286648:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 27 | +12 | 63.8 kBtu/ft² | 300 tCO₂e |
| 2023 | 15 | -5 | 67.3 kBtu/ft² | 272 tCO₂e |
| 2022 | 20 | 71.2 kBtu/ft² | 243 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
- 120 W 72th Street
- City
- New York City
- State
- New York
- ZIP
- 10023
- Coordinates
- 40.77766, -73.97941
Within ~1 km
Nearby benchmarked buildings
- CIG > LCPA_CAMPUS ON CMPscore —
Performing Arts · 2,396,331 sq ft
Museum · 1,820,000 sq ft
College/University · 1,224,124 sq ft
College/University · 1,147,386 sq ft
- ONE LINCOLN PLAZAscore 5
Multifamily Housing · 1,075,045 sq ft
- AKAM - 160 West 66th Streetscore —
Mixed Use Property · 945,159 sq ft
See also: most efficient in New York City · biggest emitters
How does Harsen House Condominium (120 W 72th Street) 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. Harsen House Condominium (120 W 72th Street)'s ENERGY STAR score of 27 compares with an average of 63 across the 22,829 that report a score; it scores higher than 16% of them and lower than 84%. Its site EUI of 63.8 kBtu/ft² is about 15% below 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 5.3 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 57,155 sq ft, it is about 43% below the average floor area of 100,951 sq ft for those buildings. It was built in 1937, 15 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.
How has Harsen House Condominium (120 W 72th Street)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Harsen House Condominium (120 W 72th Street), covering report years 2022–2024. Its ENERGY STAR score went from 20 in 2022 to 27 in 2024 (+7 points). Site EUI moved from 71.2 kBtu/ft² (2022) to 63.8 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 243 tCO₂e to 300 tCO₂e over the same span (up 23%).
What does an ENERGY STAR score of 27 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 27 means the building performs better than about 27% of its national peers. BuildingCensus bands the score into report-card grades; 27 falls in band D — lowest band (1–54). It sits 48 points below 75, the threshold for ENERGY STAR certification. 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. Harsen House Condominium (120 W 72th Street)'s 63.8 kBtu/ft² across 57,155 sq ft works out to about 3.6 billion Btu (1,069 MWh-equivalent) in 2024. Its source EUI of 119.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 503,261 kWh of electricity, 19,303 therms of natural gas and 1,247 thousand gallons of water for the year.
Which law requires Harsen House Condominium (120 W 72th Street) to report its energy use?
Harsen House Condominium (120 W 72th 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:6286648:2024). 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
- Hampton_3205 Emmons Avenue· 57,149 sq ft
- 40 Morningside Avenue· 57,148 sq ft · score 42 (D)
- CQ- 90-05 153rd Street· 57,144 sq ft · score 63 (C)
- CQ- 90-05 153rd Street· 57,144 sq ft · score 71 (B)
- Central Queens - 153-02 90th Ave· 57,144 sq ft · score 74 (B)
- Superior - 335+337 Campus· 57,142 sq ft · score 90 (A)
- Multifamily Housing buildings in New York City· 33,022 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 Harsen House Condominium (120 W 72th Street)'s energy grade?
Harsen House Condominium (120 W 72th Street) scores 27 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Harsen House Condominium (120 W 72th Street) use?
Its 2024 site energy-use intensity was 63.8 kBtu/ft² (119.6 kBtu/ft² source) across 57,155 sq ft, including 503,261 kWh of electricity and 19,303 therms of natural gas.
What are Harsen House Condominium (120 W 72th Street)'s carbon emissions?
Harsen House Condominium (120 W 72th Street) reported 300 tCO₂e of greenhouse-gas emissions (5.3 kgCO₂e/ft²) for 2024.
Where is Harsen House Condominium (120 W 72th Street)?
Harsen House Condominium (120 W 72th Street) is in New York City, New York 10023. Its coordinates are 40.77766, -73.97941 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Harsen House Condominium (120 W 72th Street) and when was it built?
Harsen House Condominium (120 W 72th Street) has 57,155 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1937 as its year built. It is classed as multifamily housing.
Is Harsen House Condominium (120 W 72th 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).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Harsen House Condominium (120 W 72th Street), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/harsen-house-condominium-120-w-72th-street-ca915d65 (data as of October 2, 2026).