Hilary Gardens
Multifamily Housing in New York City, NY · 300 Mercer · 10003
At a glance
Hilary Gardens is a 489,709-square-foot multifamily housing building at 300 Mercer in New York City, New York, built in 1950. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 34 out of 100 (grade D), a site energy-use intensity of 104.8 kBtu/ft² and 4,226 tCO₂e of greenhouse-gas emissions. That score is higher than 20% 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 | 34 (band D) |
| Site EUI | 104.8 kBtu/ft² |
| Source EUI | 146.1 kBtu/ft² |
| GHG emissions | 4,226 tCO₂e |
| GHG intensity | 8.6 kgCO₂e/ft² |
| Electricity | 3,218,050 kWh |
| Natural gas | 15,026 therms |
| Gross floor area | 489,709 sq ft |
| Source record | nyc:2817365:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 34 | -56 | 104.8 kBtu/ft² | 4,226 tCO₂e |
| 2023 | 90 | +63 | 49.7 kBtu/ft² | 2,150 tCO₂e |
| 2022 | 27 | 114.7 kBtu/ft² | 4,267 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
- 300 Mercer
- City
- New York City
- State
- New York
- ZIP
- 10003
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in New York City · biggest emitters
How does Hilary Gardens 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. Hilary Gardens's ENERGY STAR score of 34 compares with an average of 63 across the 22,829 that report a score; it scores higher than 20% of them and lower than 80%. Its site EUI of 104.8 kBtu/ft² is about 40% 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 8.6 kgCO₂e/ft² is about 66% above the group average of 5.2 kgCO₂e/ft².
At 489,709 sq ft, it is about 385% above the average floor area of 100,951 sq ft for those buildings. Its 1950 construction date is close to 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 Hilary Gardens's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Hilary Gardens, covering report years 2022–2024. Its ENERGY STAR score went from 27 in 2022 to 34 in 2024 (+7 points); its best year on file was 2023, at 90. Site EUI moved from 114.7 kBtu/ft² (2022) to 104.8 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 4,267 tCO₂e to 4,226 tCO₂e over the same span (down 1%).
What does an ENERGY STAR score of 34 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 34 means the building performs better than about 34% of its national peers. BuildingCensus bands the score into report-card grades; 34 falls in band D — lowest band (1–54). It sits 41 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. Hilary Gardens's 104.8 kBtu/ft² across 489,709 sq ft works out to about 51.3 billion Btu (15,041 MWh-equivalent) in 2024. Its source EUI of 146.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,218,050 kWh of electricity and 15,026 therms of natural gas for the year.
Which law requires Hilary Gardens to report its energy use?
Hilary Gardens 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:2817365:2024). 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
- Atlantic Towers· 488,453 sq ft · score 61 (C)
- Allied - 151 East 85th Street· 488,104 sq ft · score 86 (A)
- Coney Island Associates LLC (2191aff)· 487,518 sq ft · score 88 (A)
- DEPM 1246 - 130 William Street· 487,444 sq ft · EUI 59.0 kBtu/ft²
- 300 Ashland Place· 487,115 sq ft · score 33 (D)
- 94-15 Sutphin Blvd· 486,306 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 Hilary Gardens's energy grade?
Hilary Gardens scores 34 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 Hilary Gardens use?
Its 2024 site energy-use intensity was 104.8 kBtu/ft² (146.1 kBtu/ft² source) across 489,709 sq ft, including 3,218,050 kWh of electricity and 15,026 therms of natural gas.
What are Hilary Gardens's carbon emissions?
Hilary Gardens reported 4,226 tCO₂e of greenhouse-gas emissions (8.6 kgCO₂e/ft²) for 2024.
Where is Hilary Gardens?
Hilary Gardens is at 300 Mercer, in New York City, New York 10003.
How big is Hilary Gardens and when was it built?
Hilary Gardens has 489,709 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1950 as its year built. It is classed as multifamily housing.
Is Hilary Gardens 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, “Hilary Gardens, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/hilary-gardens-ff2e5d55 (data as of October 2, 2026).