MARINER'S HARBOR
Multifamily Housing in New York City, NY · 311 GRANDVIEW AVENUE · 10303
At a glance
MARINER'S HARBOR is a 627,795-square-foot multifamily housing building at 311 GRANDVIEW AVENUE in New York City, New York, built in 1954. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 173.4 kBtu/ft² and 6,816 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 173.4 kBtu/ft² |
| Source EUI | 228.6 kBtu/ft² |
| GHG emissions | 6,816 tCO₂e |
| GHG intensity | 10.9 kgCO₂e/ft² |
| Electricity | 4,885,247 kWh |
| Natural gas | 922,086 therms |
| Gross floor area | 627,795 sq ft |
| Source record | nyc:2831111:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | ±0 | 173.4 kBtu/ft² | 6,816 tCO₂e |
| 2023 | 1 | ±0 | 168.2 kBtu/ft² | 6,518 tCO₂e |
| 2022 | 1 | 300.2 kBtu/ft² | 10,548 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
- 311 GRANDVIEW AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10303
- Coordinates
- 40.63325, -74.16519
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does MARINER'S HARBOR 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. MARINER'S HARBOR's ENERGY STAR score of 1 compares with an average of 63 across the 22,829 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 173.4 kBtu/ft² is about 132% 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 10.9 kgCO₂e/ft² is about twice the group average of 5.2 kgCO₂e/ft².
At 627,795 sq ft, it is about 522% above the average floor area of 100,951 sq ft for those buildings. Its 1954 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 MARINER'S HARBOR's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for MARINER'S HARBOR, covering report years 2022–2024. Its ENERGY STAR score was 1 in both 2022 and 2024. Site EUI moved from 300.2 kBtu/ft² (2022) to 173.4 kBtu/ft² (2024), a 42% decrease. Reported emissions went from 10,548 tCO₂e to 6,816 tCO₂e over the same span (down 35%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 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. MARINER'S HARBOR's 173.4 kBtu/ft² across 627,795 sq ft works out to about 108.9 billion Btu (31,904 MWh-equivalent) in 2024. Its source EUI of 228.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,885,247 kWh of electricity and 922,086 therms of natural gas for the year.
Which law requires MARINER'S HARBOR to report its energy use?
MARINER'S HARBOR 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:2831111:2024). 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
- REDFERN· 627,580 sq ft · score 98 (A)
- Castle Hill - Bldgs 5-8· 627,300 sq ft · EUI 26.2 kBtu/ft²
- Harlem River Campus· 627,253 sq ft · score 29 (D)
- Cross Bronx Pres LLC - (2166bay) (2166murph)· 626,090 sq ft
- Castle Hill - Bldgs 11-14· 625,900 sq ft · EUI 24.6 kBtu/ft²
- Century - 350 West 42nd Street· 625,331 sq ft · score 28 (D)
- 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 MARINER'S HARBOR's energy grade?
MARINER'S HARBOR scores 1 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 MARINER'S HARBOR use?
Its 2024 site energy-use intensity was 173.4 kBtu/ft² (228.6 kBtu/ft² source) across 627,795 sq ft, including 4,885,247 kWh of electricity and 922,086 therms of natural gas.
What are MARINER'S HARBOR's carbon emissions?
MARINER'S HARBOR reported 6,816 tCO₂e of greenhouse-gas emissions (10.9 kgCO₂e/ft²) for 2024.
Where is MARINER'S HARBOR?
MARINER'S HARBOR is at 311 GRANDVIEW AVENUE, in New York City, New York 10303. Its coordinates are 40.63325, -74.16519 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is MARINER'S HARBOR and when was it built?
MARINER'S HARBOR has 627,795 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1954 as its year built. It is classed as multifamily housing.
Is MARINER'S HARBOR 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, “MARINER'S HARBOR, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/mariner-s-harbor-ef104256 (data as of October 2, 2026).