Maxwell: 149 East 73rd St.
Multifamily Housing in New York City, NY · 149 East 73rd Street · 10028
At a glance
Maxwell: 149 East 73rd St. is a 83,460-square-foot multifamily housing building at 149 East 73rd Street in New York City, New York, built in 1924. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 66.8 kBtu/ft² and 468 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 66.8 kBtu/ft² |
| Source EUI | 94.6 kBtu/ft² |
| GHG emissions | 468 tCO₂e |
| GHG intensity | 5.6 kgCO₂e/ft² |
| Electricity | 370,744 kWh |
| Natural gas | 857 therms |
| Water use | 2,103 kgal |
| Gross floor area | 83,460 sq ft |
| Source record | nyc:3001576:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 66.8 kBtu/ft² | 468 tCO₂e | |
| 2023 | — | 60.1 kBtu/ft² | 416 tCO₂e | |
| 2022 | — | 16.2 kBtu/ft² | 112 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.
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Location
- Address
- 149 East 73rd Street
- City
- New York City
- State
- New York
- ZIP
- 10028
- Coordinates
- 40.77095, -73.96131
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Maxwell: 149 East 73rd St. 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. Its site EUI of 66.8 kBtu/ft² is about 11% 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 5.6 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 83,460 sq ft, it is about 17% below the average floor area of 100,951 sq ft for those buildings. It was built in 1924, 28 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 Maxwell: 149 East 73rd St.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Maxwell: 149 East 73rd St., covering report years 2022–2024. Site EUI moved from 16.2 kBtu/ft² (2022) to 66.8 kBtu/ft² (2024), an 312% increase. Reported emissions went from 112 tCO₂e to 468 tCO₂e over the same span (up 319%).
What does a site EUI of 66.8 kBtu/ft² mean?
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. Maxwell: 149 East 73rd St.'s 66.8 kBtu/ft² across 83,460 sq ft works out to about 5.6 billion Btu (1,634 MWh-equivalent) in 2024. Its source EUI of 94.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 370,744 kWh of electricity, 857 therms of natural gas and 2,103 thousand gallons of water for the year.
Which law requires Maxwell: 149 East 73rd St. to report its energy use?
Maxwell: 149 East 73rd St. 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:3001576:2024). 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
- 150 East 182 St· 83,453 sq ft · score 36 (D)
- Mitchell Gardens 3 (141-09 28th Ave)· 83,451 sq ft
- 3101 Avenue I· 83,450 sq ft
- E&M 63 Tiffany Place· 83,427 sq ft · score 66 (C)
- B&R: 425 West 205th Street· 83,425 sq ft · score 74 (B)
- Total: 420 W 206th St· 83,425 sq ft · score 62 (C)
- 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 Maxwell: 149 East 73rd St.'s energy grade?
Maxwell: 149 East 73rd St. did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 66.8 kBtu/ft².
How much energy does Maxwell: 149 East 73rd St. use?
Its 2024 site energy-use intensity was 66.8 kBtu/ft² (94.6 kBtu/ft² source) across 83,460 sq ft, including 370,744 kWh of electricity and 857 therms of natural gas.
What are Maxwell: 149 East 73rd St.'s carbon emissions?
Maxwell: 149 East 73rd St. reported 468 tCO₂e of greenhouse-gas emissions (5.6 kgCO₂e/ft²) for 2024.
Where is Maxwell: 149 East 73rd St.?
Maxwell: 149 East 73rd St. is at 149 East 73rd Street, in New York City, New York 10028. Its coordinates are 40.77095, -73.96131 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Maxwell: 149 East 73rd St. and when was it built?
Maxwell: 149 East 73rd St. has 83,460 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1924 as its year built. It is classed as multifamily housing.
Is Maxwell: 149 East 73rd St. 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, “Maxwell: 149 East 73rd St., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/maxwell-149-east-73rd-st-a1ecdd17 (data as of October 2, 2026).