819 E 173rd Street
Multifamily Housing in New York City, NY · 10460
At a glance
819 E 173rd Street is a 76,800-square-foot multifamily housing building in New York City, New York, built in 1931. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 9 out of 100 (grade D), a site energy-use intensity of 97.3 kBtu/ft² and 521 tCO₂e of greenhouse-gas emissions. That score is higher than 7% 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 | 9 (band D) |
| Site EUI | 97.3 kBtu/ft² |
| Source EUI | 147.8 kBtu/ft² |
| GHG emissions | 521 tCO₂e |
| GHG intensity | 6.8 kgCO₂e/ft² |
| Electricity | 587,136 kWh |
| Natural gas | 54,676 therms |
| Gross floor area | 76,800 sq ft |
| Source record | nyc:23955146:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 9 | +8 | 97.3 kBtu/ft² | 521 tCO₂e |
| 2023 | 1 | 144.1 kBtu/ft² | 699 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
- 819 E 173rd Street
- City
- New York City
- State
- New York
- ZIP
- 10460
- Coordinates
- 40.83669, -73.89037
Within ~1 km
Nearby benchmarked buildings
- Campus - Compass Two + Threescore —
Multifamily Housing · 663,882 sq ft
- Compass 3score 100
Multifamily Housing · 350,650 sq ft
Multifamily Housing · 289,850 sq ft
- MURPHYscore 30
Multifamily Housing · 289,850 sq ft
Multifamily Housing · 289,850 sq ft
Multifamily Housing · 286,346 sq ft
See also: most efficient in New York City · biggest emitters
How does 819 E 173rd 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. 819 E 173rd Street's ENERGY STAR score of 9 compares with an average of 63 across the 22,829 that report a score; it scores higher than 7% of them and lower than 93%. Its site EUI of 97.3 kBtu/ft² is about 30% 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 6.8 kgCO₂e/ft² is about 30% above the group average of 5.2 kgCO₂e/ft².
At 76,800 sq ft, it is about 24% below the average floor area of 100,951 sq ft for those buildings. It was built in 1931, 21 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 819 E 173rd Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 819 E 173rd Street, covering report years 2023–2024. Its ENERGY STAR score went from 1 in 2023 to 9 in 2024 (+8 points). Site EUI moved from 144.1 kBtu/ft² (2023) to 97.3 kBtu/ft² (2024), a 32% decrease. Reported emissions went from 699 tCO₂e to 521 tCO₂e over the same span (down 26%).
What does an ENERGY STAR score of 9 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 9 means the building performs better than about 9% of its national peers. BuildingCensus bands the score into report-card grades; 9 falls in band D — lowest band (1–54). It sits 66 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. 819 E 173rd Street's 97.3 kBtu/ft² across 76,800 sq ft works out to about 7.5 billion Btu (2,190 MWh-equivalent) in 2024. Its source EUI of 147.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 587,136 kWh of electricity and 54,676 therms of natural gas for the year.
Which law requires 819 E 173rd Street to report its energy use?
819 E 173rd 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:23955146:2024). 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
- 4 Seasons International Management : 136-17 MAPLE AVENUE· 76,795 sq ft · score 5 (D)
- 2161 Barnes· 76,772 sq ft · score 58 (C)
- 1577 EAST 17 STREET· 76,770 sq ft · score 56 (C)
- 1577 East 17th Street· 76,770 sq ft · score 77 (B)
- Betances II&III (12)· 76,768 sq ft · score 34 (D)
- SAMUEL (CITY) - Bldgs 10-13· 76,765 sq ft · EUI 97.1 kBtu/ft²
- 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 819 E 173rd Street's energy grade?
819 E 173rd Street scores 9 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 819 E 173rd Street use?
Its 2024 site energy-use intensity was 97.3 kBtu/ft² (147.8 kBtu/ft² source) across 76,800 sq ft, including 587,136 kWh of electricity and 54,676 therms of natural gas.
What are 819 E 173rd Street's carbon emissions?
819 E 173rd Street reported 521 tCO₂e of greenhouse-gas emissions (6.8 kgCO₂e/ft²) for 2024.
Where is 819 E 173rd Street?
819 E 173rd Street is in New York City, New York 10460. Its coordinates are 40.83669, -73.89037 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 819 E 173rd Street and when was it built?
819 E 173rd Street has 76,800 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1931 as its year built. It is classed as multifamily housing.
Is 819 E 173rd 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, “819 E 173rd Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/819-e-173rd-street-923b64e3 (data as of October 2, 2026).