820 Thieriot Ave
Multifamily Housing in New York City, NY · 10473
At a glance
820 Thieriot Ave is a 176,054-square-foot multifamily housing building in New York City, New York, built in 1968. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 189.2 kBtu/ft² and 1,959 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 189.2 kBtu/ft² |
| Source EUI | 229.1 kBtu/ft² |
| GHG emissions | 1,959 tCO₂e |
| GHG intensity | 11.1 kgCO₂e/ft² |
| Electricity | 898,685 kWh |
| Natural gas | 302,355 therms |
| Water use | 13,432 kgal |
| Gross floor area | 176,054 sq ft |
| Source record | nyc:33065955:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | -3 | 189.2 kBtu/ft² | 1,959 tCO₂e |
| 2023 | 4 | 154.1 kBtu/ft² | 1,608 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
- 820 Thieriot Ave
- City
- New York City
- State
- New York
- ZIP
- 10473
- Coordinates
- 40.82215, -73.86217
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 820 Thieriot Ave 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. 820 Thieriot Ave's ENERGY STAR score of 1 compares with an average of 63 across the 22,829 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 189.2 kBtu/ft² is about 153% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 11.1 kgCO₂e/ft² is about twice the group average of 5.2 kgCO₂e/ft².
At 176,054 sq ft, it is about 74% above the average floor area of 100,951 sq ft for those buildings. It was built in 1968, 16 years later 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 820 Thieriot Ave's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 820 Thieriot Ave, covering report years 2023–2024. Its ENERGY STAR score went from 4 in 2023 to 1 in 2024 (-3 points); its best year on file was 2023, at 4. Site EUI moved from 154.1 kBtu/ft² (2023) to 189.2 kBtu/ft² (2024), an 23% increase. Reported emissions went from 1,608 tCO₂e to 1,959 tCO₂e over the same span (up 22%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 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. 820 Thieriot Ave's 189.2 kBtu/ft² across 176,054 sq ft works out to about 33.3 billion Btu (9,762 MWh-equivalent) in 2024. Its source EUI of 229.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 898,685 kWh of electricity, 302,355 therms of natural gas and 13,432 thousand gallons of water for the year.
Which law requires 820 Thieriot Ave to report its energy use?
820 Thieriot Ave 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:33065955:2024). 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
- 38-20 Bowne Street Flushing· 176,033 sq ft · score 14 (D)
- Blossom Gardens Apartments Inc· 175,941 sq ft · EUI 31.7 kBtu/ft²
- 134-30 Franklin Ave· 175,941 sq ft · score 67 (C)
- Copy of DEPM 1066 - 941 Park Ave· 175,859 sq ft · score 65 (C)
- 880 Thieriot Ave· 175,851 sq ft · score 100 (A)
- 880 Thieriot· 175,851 sq ft · score 100 (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 820 Thieriot Ave's energy grade?
820 Thieriot Ave scores 1 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 820 Thieriot Ave use?
Its 2024 site energy-use intensity was 189.2 kBtu/ft² (229.1 kBtu/ft² source) across 176,054 sq ft, including 898,685 kWh of electricity and 302,355 therms of natural gas.
What are 820 Thieriot Ave's carbon emissions?
820 Thieriot Ave reported 1,959 tCO₂e of greenhouse-gas emissions (11.1 kgCO₂e/ft²) for 2024.
Where is 820 Thieriot Ave?
820 Thieriot Ave is in New York City, New York 10473. Its coordinates are 40.82215, -73.86217 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 820 Thieriot Ave and when was it built?
820 Thieriot Ave has 176,054 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1968 as its year built. It is classed as multifamily housing.
Is 820 Thieriot Ave 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, “820 Thieriot Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/820-thieriot-ave-50fa1a22 (data as of October 2, 2026).