The Astra: 645 Gates Ave
Multifamily Housing in New York City, NY · 645 Gates Ave · 11221
At a glance
The Astra: 645 Gates Ave is a 212,405-square-foot multifamily housing building in New York City, New York, built in 1974. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 17.3 kBtu/ft² and 275 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 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 17.3 kBtu/ft² |
| Source EUI | 30.0 kBtu/ft² |
| GHG emissions | 275 tCO₂e |
| GHG intensity | 1.3 kgCO₂e/ft² |
| Electricity | 420,933 kWh |
| Natural gas | 22,295 therms |
| Gross floor area | 212,405 sq ft |
| Source record | nyc:25126540:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 100 | ±0 | 17.3 kBtu/ft² | 275 tCO₂e |
| 2022 | 100 | 14.0 kBtu/ft² | 193 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
- 645 Gates Ave
- City
- New York City
- State
- New York
- ZIP
- 11221
- Coordinates
- 40.68735, -73.94087
Within ~1 km
Nearby benchmarked buildings
Multifamily Housing · 1,074,000 sq ft
Multifamily Housing · 1,074,000 sq ft
- ROOSEVELT I - NGridscore —
Multifamily Housing · 749,000 sq ft
- STUYVESANT GARDENS Iscore 4
Multifamily Housing · 389,000 sq ft
Multifamily Housing · 388,000 sq ft
- Benchmarking Group - 112score 80
K-12 School · 308,804 sq ft
See also: most efficient in New York City · biggest emitters
How does The Astra: 645 Gates 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. The Astra: 645 Gates Ave'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 17.3 kBtu/ft² is about 77% 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 1.3 kgCO₂e/ft² is about 75% below the group average of 5.2 kgCO₂e/ft².
At 212,405 sq ft, it is about twice the average floor area of 100,951 sq ft for those buildings. It was built in 1974, 22 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 The Astra: 645 Gates Ave's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for The Astra: 645 Gates Ave, covering report years 2022–2023. Its ENERGY STAR score was 100 in both 2022 and 2023. Site EUI moved from 14.0 kBtu/ft² (2022) to 17.3 kBtu/ft² (2023), an 24% increase. Reported emissions went from 193 tCO₂e to 275 tCO₂e over the same span (up 42%).
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. The Astra: 645 Gates Ave's 17.3 kBtu/ft² across 212,405 sq ft works out to about 3.7 billion Btu (1,077 MWh-equivalent) in 2023. Its source EUI of 30.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 420,933 kWh of electricity and 22,295 therms of natural gas for the year.
Which law requires The Astra: 645 Gates Ave to report its energy use?
The Astra: 645 Gates 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 2023 disclosure (source record nyc:25126540:2023). 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
- Murray House Owners· 212,387 sq ft · score 71 (B)
- DEPM 1136 - 111 East 85th St· 212,365 sq ft · EUI 53.4 kBtu/ft²
- 200 East 90th Street (200 E 90th Street)· 212,326 sq ft · score 58 (C)
- 920 Metcalf Avenue AKA 1660 Bruckner Boulevard· 212,300 sq ft · score 47 (D)
- 2-4 River Road· 212,294 sq ft · score 31 (D)
- Pinnacle - 132-35 Sanford Ave· 212,277 sq ft · score 72 (B)
- 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 The Astra: 645 Gates Ave's energy grade?
The Astra: 645 Gates Ave scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Astra: 645 Gates Ave use?
Its 2023 site energy-use intensity was 17.3 kBtu/ft² (30.0 kBtu/ft² source) across 212,405 sq ft, including 420,933 kWh of electricity and 22,295 therms of natural gas.
What are The Astra: 645 Gates Ave's carbon emissions?
The Astra: 645 Gates Ave reported 275 tCO₂e of greenhouse-gas emissions (1.3 kgCO₂e/ft²) for 2023.
Where is The Astra: 645 Gates Ave?
The Astra: 645 Gates Ave is in New York City, New York 11221. Its coordinates are 40.68735, -73.94087 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is The Astra: 645 Gates Ave and when was it built?
The Astra: 645 Gates Ave has 212,405 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1974 as its year built. It is classed as multifamily housing.
Is The Astra: 645 Gates Ave covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “The Astra: 645 Gates Ave, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/the-astra-645-gates-ave-9168e52b (data as of October 2, 2026).