315 Realty Associates - 315 e 91 st
Office in New York City, NY · 315 e 91 st · 10128
At a glance
315 Realty Associates - 315 e 91 st is a 27,710-square-foot office building in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 39.5 kBtu/ft² and 96 tCO₂e of greenhouse-gas emissions. That score is higher than 81% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 93 (band A) |
| Site EUI | 39.5 kBtu/ft² |
| Source EUI | 62.7 kBtu/ft² |
| GHG emissions | 96 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 103,341 kWh |
| Natural gas | 0 therms |
| Water use | 105 kgal |
| Gross floor area | 27,710 sq ft |
| Source record | nyc:6802825:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 93 | ±0 | 39.5 kBtu/ft² | 96 tCO₂e |
| 2023 | 93 | +1 | 39.2 kBtu/ft² | 93 tCO₂e |
| 2022 | 92 | 40.2 kBtu/ft² | 87 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
- 315 e 91 st
- City
- New York City
- State
- New York
- ZIP
- 10128
- Coordinates
- 40.78082, -73.94882
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 315 Realty Associates - 315 e 91 st compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. 315 Realty Associates - 315 e 91 st's ENERGY STAR score of 93 compares with an average of 72 across the 2,519 that report a score; it scores higher than 81% of them and lower than 15%. Its site EUI of 39.5 kBtu/ft² is about 39% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.5 kgCO₂e/ft² is about 41% below the group average of 5.8 kgCO₂e/ft².
At 27,710 sq ft, it is about 87% below the average floor area of 205,440 sq ft for those buildings. It was built in 1926, 14 years earlier than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 315 Realty Associates - 315 e 91 st's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 315 Realty Associates - 315 e 91 st, covering report years 2022–2024. Its ENERGY STAR score went from 92 in 2022 to 93 in 2024 (+1 points); its best year on file was 2023, at 93. Site EUI moved from 40.2 kBtu/ft² (2022) to 39.5 kBtu/ft² (2024), a 2% decrease. Reported emissions went from 87 tCO₂e to 96 tCO₂e over the same span (up 11%).
What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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. 315 Realty Associates - 315 e 91 st's 39.5 kBtu/ft² across 27,710 sq ft works out to about 1.1 billion Btu (321 MWh-equivalent) in 2024. Its source EUI of 62.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 103,341 kWh of electricity, 0 therms of natural gas and 105 thousand gallons of water for the year.
Which law requires 315 Realty Associates - 315 e 91 st to report its energy use?
315 Realty Associates - 315 e 91 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:6802825:2024). 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.
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- Office buildings in New York City· 3,384 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 315 Realty Associates - 315 e 91 st's energy grade?
315 Realty Associates - 315 e 91 st scores 93 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 315 Realty Associates - 315 e 91 st use?
Its 2024 site energy-use intensity was 39.5 kBtu/ft² (62.7 kBtu/ft² source) across 27,710 sq ft, including 103,341 kWh of electricity and 0 therms of natural gas.
What are 315 Realty Associates - 315 e 91 st's carbon emissions?
315 Realty Associates - 315 e 91 st reported 96 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is 315 Realty Associates - 315 e 91 st?
315 Realty Associates - 315 e 91 st is in New York City, New York 10128. Its coordinates are 40.78082, -73.94882 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 315 Realty Associates - 315 e 91 st and when was it built?
315 Realty Associates - 315 e 91 st has 27,710 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as office.
Is 315 Realty Associates - 315 e 91 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, “315 Realty Associates - 315 e 91 st, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/315-realty-associates-315-e-91-st-bae3417d (data as of October 2, 2026).