Theo: 45-45 46th St
Multifamily Housing in New York City, NY · 45-45 46th St · 11377
At a glance
Theo: 45-45 46th St is a 35,393-square-foot multifamily housing building in New York City, New York, built in 1927. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 13.7 kBtu/ft² and 49 tCO₂e of greenhouse-gas emissions. That score is higher than 90% 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 | 100 (band A) |
| Site EUI | 13.7 kBtu/ft² |
| Source EUI | 32.6 kBtu/ft² |
| GHG emissions | 49 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 107,838 kWh |
| Natural gas | 1,185 therms |
| Water use | 2,499 kgal |
| Gross floor area | 35,393 sq ft |
| Source record | nyc:6282946:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 13.7 kBtu/ft² | 49 tCO₂e |
| 2023 | 100 | +34 | 13.4 kBtu/ft² | 45 tCO₂e |
| 2022 | 66 | 91.1 kBtu/ft² | 185 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
- 45-45 46th St
- City
- New York City
- State
- New York
- ZIP
- 11377
- Coordinates
- 40.74201, -73.91892
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Theo: 45-45 46th 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. Theo: 45-45 46th St's ENERGY STAR score of 100 compares with an average of 63 across the 22,829 that report a score; it scores higher than 90% of them. Its site EUI of 13.7 kBtu/ft² is about 82% 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 1.4 kgCO₂e/ft² is about 74% below the group average of 5.2 kgCO₂e/ft².
At 35,393 sq ft, it is about 65% below the average floor area of 100,951 sq ft for those buildings. It was built in 1927, 25 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 Theo: 45-45 46th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Theo: 45-45 46th St, covering report years 2022–2024. Its ENERGY STAR score went from 66 in 2022 to 100 in 2024 (+34 points); its best year on file was 2023, at 100. Site EUI moved from 91.1 kBtu/ft² (2022) to 13.7 kBtu/ft² (2024), a 85% decrease. Reported emissions went from 185 tCO₂e to 49 tCO₂e over the same span (down 74%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). 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. Theo: 45-45 46th St's 13.7 kBtu/ft² across 35,393 sq ft works out to about 0.5 billion Btu (142 MWh-equivalent) in 2024. Its source EUI of 32.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 107,838 kWh of electricity, 1,185 therms of natural gas and 2,499 thousand gallons of water for the year.
Which law requires Theo: 45-45 46th St to report its energy use?
Theo: 45-45 46th 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:6282946:2024). 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
- 24 Bradhurst Avenue· 35,390 sq ft · score 29 (D)
- 24 Bradhurst Avenue AKA 305-313 West 143rd Street (Parent Property)· 35,390 sq ft · score 13 (D)
- Arthur Ave Development· 35,390 sq ft · score 56 (C)
- 173 Macdougal Street· 35,385 sq ft · EUI 64.4 kBtu/ft²
- BPC: 40-11 72nd Street· 35,378 sq ft · score 96 (A)
- 8220 Ft Hamilton Parkway· 35,376 sq ft · score 44 (D)
- 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 Theo: 45-45 46th St's energy grade?
Theo: 45-45 46th St scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Theo: 45-45 46th St use?
Its 2024 site energy-use intensity was 13.7 kBtu/ft² (32.6 kBtu/ft² source) across 35,393 sq ft, including 107,838 kWh of electricity and 1,185 therms of natural gas.
What are Theo: 45-45 46th St's carbon emissions?
Theo: 45-45 46th St reported 49 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2024.
Where is Theo: 45-45 46th St?
Theo: 45-45 46th St is in New York City, New York 11377. Its coordinates are 40.74201, -73.91892 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Theo: 45-45 46th St and when was it built?
Theo: 45-45 46th St has 35,393 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1927 as its year built. It is classed as multifamily housing.
Is Theo: 45-45 46th 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, “Theo: 45-45 46th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/theo-45-45-46th-st-4ff5c32e (data as of October 2, 2026).