31171 Owners Corp.
Multifamily Housing in New York City, NY · 311 East 71st Street · 10021
At a glance
31171 Owners Corp. is a 86,460-square-foot multifamily housing building at 311 East 71st Street in New York City, New York, built in 1963. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 62.3 kBtu/ft² and 353 tCO₂e of greenhouse-gas emissions. That score is higher than 78% 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 | 91 (band A) |
| Site EUI | 62.3 kBtu/ft² |
| Source EUI | 89.8 kBtu/ft² |
| GHG emissions | 353 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 352,621 kWh |
| Natural gas | 41,851 therms |
| Water use | 3,478 kgal |
| Gross floor area | 86,460 sq ft |
| Source record | nyc:2745640:2023 |
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
- 311 East 71st Street
- City
- New York City
- State
- New York
- ZIP
- 10021
- Coordinates
- 40.76790, -73.95833
Within ~1 km
Nearby benchmarked buildings
- NYP Cornell (East Campus)score 47
Hospital (General Medical & Surgical) · 2,801,795 sq ft
Other - Specialty Hospital · 2,490,355 sq ft
Mixed Use Property · 2,437,399 sq ft
- Weill Cornell Medical Centerscore —
Hospital (General Medical & Surgical) · 2,405,480 sq ft
Laboratory · 1,862,814 sq ft
Laboratory · 1,546,119 sq ft
See also: most efficient in New York City · biggest emitters
How does 31171 Owners Corp. 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. 31171 Owners Corp.'s ENERGY STAR score of 91 compares with an average of 63 across the 22,829 that report a score; it scores higher than 78% of them and lower than 21%. Its site EUI of 62.3 kBtu/ft² is about 17% 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 4.1 kgCO₂e/ft² is about 21% below the group average of 5.2 kgCO₂e/ft².
At 86,460 sq ft, it is about 14% below the average floor area of 100,951 sq ft for those buildings. It was built in 1963, 11 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.
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 31171 Owners Corp.'s 62.3 kBtu/ft² across 86,460 sq ft works out to about 5.4 billion Btu (1,579 MWh-equivalent) in 2023. Its source EUI of 89.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 352,621 kWh of electricity, 41,851 therms of natural gas and 3,478 thousand gallons of water for the year.
Which law requires 31171 Owners Corp. to report its energy use?
31171 Owners Corp. 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:2745640:2023). 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
- 171 East 89th St.· 86,443 sq ft · score 76 (B)
- 215 East 72nd Street· 86,422 sq ft · EUI 64.5 kBtu/ft²
- 2840 Bailey Avenue· 86,412 sq ft · score 54 (D)
- M&I Management - 1730 CARROLL ST· 86,400 sq ft · score 21 (D)
- Dermer Management - 476 Broadway· 86,369 sq ft · EUI 47.2 kBtu/ft²
- Andrews: 487 Greenwich St· 86,361 sq ft · EUI 35.2 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 31171 Owners Corp.'s energy grade?
31171 Owners Corp. scores 91 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 31171 Owners Corp. use?
Its 2023 site energy-use intensity was 62.3 kBtu/ft² (89.8 kBtu/ft² source) across 86,460 sq ft, including 352,621 kWh of electricity and 41,851 therms of natural gas.
What are 31171 Owners Corp.'s carbon emissions?
31171 Owners Corp. reported 353 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2023.
Where is 31171 Owners Corp.?
31171 Owners Corp. is at 311 East 71st Street, in New York City, New York 10021. Its coordinates are 40.76790, -73.95833 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 31171 Owners Corp. and when was it built?
31171 Owners Corp. has 86,460 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1963 as its year built. It is classed as multifamily housing.
Is 31171 Owners Corp. 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, “31171 Owners Corp., New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/31171-owners-corp-6db2caab (data as of October 2, 2026).