HARBORVIEW TERRACE
Multifamily Housing in New York City, NY · 520 WEST 56TH STREET · 10019
At a glance
HARBORVIEW TERRACE is a 410,605-square-foot multifamily housing building at 520 WEST 56TH STREET in New York City, New York, built in 1977. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 20 out of 100 (grade D), a site energy-use intensity of 108.3 kBtu/ft² and 2,852 tCO₂e of greenhouse-gas emissions. That score is higher than 12% 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 | 20 (band D) |
| Site EUI | 108.3 kBtu/ft² |
| Source EUI | 147.4 kBtu/ft² |
| GHG emissions | 2,852 tCO₂e |
| GHG intensity | 7.0 kgCO₂e/ft² |
| Electricity | 2,319,957 kWh |
| Natural gas | 365,399 therms |
| Gross floor area | 410,605 sq ft |
| Source record | nyc:2831057:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 20 | -5 | 108.3 kBtu/ft² | 2,852 tCO₂e |
| 2023 | 25 | -26 | 100.5 kBtu/ft² | 2,627 tCO₂e |
| 2022 | 51 | 97.5 kBtu/ft² | 2,287 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
- 520 WEST 56TH STREET
- City
- New York City
- State
- New York
- ZIP
- 10019
- Coordinates
- 40.76880, -73.98992
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does HARBORVIEW TERRACE 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. HARBORVIEW TERRACE's ENERGY STAR score of 20 compares with an average of 63 across the 22,829 that report a score; it scores higher than 12% of them and lower than 88%. Its site EUI of 108.3 kBtu/ft² is about 45% 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 7.0 kgCO₂e/ft² is about 34% above the group average of 5.2 kgCO₂e/ft².
At 410,605 sq ft, it is about 307% above the average floor area of 100,951 sq ft for those buildings. It was built in 1977, 25 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.
How has HARBORVIEW TERRACE's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for HARBORVIEW TERRACE, covering report years 2022–2024. Its ENERGY STAR score went from 51 in 2022 to 20 in 2024 (-31 points); its best year on file was 2022, at 51. Site EUI moved from 97.5 kBtu/ft² (2022) to 108.3 kBtu/ft² (2024), an 11% increase. Reported emissions went from 2,287 tCO₂e to 2,852 tCO₂e over the same span (up 25%).
What does an ENERGY STAR score of 20 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 20 means the building performs better than about 20% of its national peers. BuildingCensus bands the score into report-card grades; 20 falls in band D — lowest band (1–54). It sits 55 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. HARBORVIEW TERRACE's 108.3 kBtu/ft² across 410,605 sq ft works out to about 44.5 billion Btu (13,032 MWh-equivalent) in 2024. Its source EUI of 147.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,319,957 kWh of electricity and 365,399 therms of natural gas for the year.
Which law requires HARBORVIEW TERRACE to report its energy use?
HARBORVIEW TERRACE 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:2831057:2024). 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
- AAR: 41-40 Union Street· 410,452 sq ft · score 67 (C)
- Lovett - 166-25 Powells Cove Boulevard· 410,218 sq ft · score 14 (D)
- AKAM - 5 East 22nd Street· 409,655 sq ft · score 46 (D)
- 52-41 Center Blvd· 409,604 sq ft · score 64 (C)
- 1000 Fox/960 Simpson Campus· 409,385 sq ft · score 80 (B)
- FRV 1725 Village Lane· 409,338 sq ft · score 91 (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 HARBORVIEW TERRACE's energy grade?
HARBORVIEW TERRACE scores 20 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 HARBORVIEW TERRACE use?
Its 2024 site energy-use intensity was 108.3 kBtu/ft² (147.4 kBtu/ft² source) across 410,605 sq ft, including 2,319,957 kWh of electricity and 365,399 therms of natural gas.
What are HARBORVIEW TERRACE's carbon emissions?
HARBORVIEW TERRACE reported 2,852 tCO₂e of greenhouse-gas emissions (7.0 kgCO₂e/ft²) for 2024.
Where is HARBORVIEW TERRACE?
HARBORVIEW TERRACE is at 520 WEST 56TH STREET, in New York City, New York 10019. Its coordinates are 40.76880, -73.98992 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is HARBORVIEW TERRACE and when was it built?
HARBORVIEW TERRACE has 410,605 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1977 as its year built. It is classed as multifamily housing.
Is HARBORVIEW TERRACE 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, “HARBORVIEW TERRACE, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/harborview-terrace-a0ee50c7 (data as of October 2, 2026).