Halstead - 345 East 56th Street NY, NY 10022
Multifamily Housing in New York City, NY · 1023 1 AVENUE · 10022
At a glance
Halstead - 345 East 56th Street NY, NY 10022 is a 227,348-square-foot multifamily housing building at 1023 1 AVENUE in New York City, New York, built in 1960. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 51 out of 100 (grade D), a site energy-use intensity of 68.1 kBtu/ft² and 1,390 tCO₂e of greenhouse-gas emissions. That score is higher than 32% 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 | 51 (band D) |
| Site EUI | 68.1 kBtu/ft² |
| Source EUI | 134.5 kBtu/ft² |
| GHG emissions | 1,390 tCO₂e |
| GHG intensity | 6.1 kgCO₂e/ft² |
| Electricity | 2,201,124 kWh |
| Natural gas | 2,882 therms |
| Gross floor area | 227,348 sq ft |
| Source record | nyc:33560067:2024 |
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
- 1023 1 AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10022
- Coordinates
- 40.75774, -73.96335
Within ~1 km
Nearby benchmarked buildings
Other - Specialty Hospital · 2,490,355 sq ft
Mixed Use Property · 2,437,399 sq ft
Office · 1,682,110 sq ft
Laboratory · 1,546,119 sq ft
- 919 Third Avenuescore —
Other - Technology/Science · 1,433,078 sq ft
- CHILD - 919 3 AVENUEscore —
Other - Technology/Science · 1,424,082 sq ft
See also: most efficient in New York City · biggest emitters
How does Halstead - 345 East 56th Street NY, NY 10022 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. Halstead - 345 East 56th Street NY, NY 10022's ENERGY STAR score of 51 compares with an average of 63 across the 22,829 that report a score; it scores higher than 32% of them and lower than 67%. Its site EUI of 68.1 kBtu/ft² is roughly in line with 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 6.1 kgCO₂e/ft² is about 18% above the group average of 5.2 kgCO₂e/ft².
At 227,348 sq ft, it is about 125% above the average floor area of 100,951 sq ft for those buildings. It was built in 1960, 8 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 51 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 51 means the building performs better than about 51% of its national peers. BuildingCensus bands the score into report-card grades; 51 falls in band D — lowest band (1–54). It sits 24 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. Halstead - 345 East 56th Street NY, NY 10022's 68.1 kBtu/ft² across 227,348 sq ft works out to about 15.5 billion Btu (4,537 MWh-equivalent) in 2024. Its source EUI of 134.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,201,124 kWh of electricity and 2,882 therms of natural gas for the year.
Which law requires Halstead - 345 East 56th Street NY, NY 10022 to report its energy use?
Halstead - 345 East 56th Street NY, NY 10022 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:33560067:2024). 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
- The Lois: 350 Clarkson· 227,308 sq ft · score 96 (A)
- 1289 Lexington Avenue· 227,302 sq ft · score 75 (B)
- 1700 1st Avenue AKA 400 East 89th Street AKA 401 East 88th Street· 227,259 sq ft · score 7 (D)
- Glenwood - The Bamford· 227,130 sq ft · score 26 (D)
- AKAM - 10 Park Avenue· 227,098 sq ft · score 46 (D)
- 765/775 Park Ave· 227,063 sq ft · score 93 (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 Halstead - 345 East 56th Street NY, NY 10022's energy grade?
Halstead - 345 East 56th Street NY, NY 10022 scores 51 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 Halstead - 345 East 56th Street NY, NY 10022 use?
Its 2024 site energy-use intensity was 68.1 kBtu/ft² (134.5 kBtu/ft² source) across 227,348 sq ft, including 2,201,124 kWh of electricity and 2,882 therms of natural gas.
What are Halstead - 345 East 56th Street NY, NY 10022's carbon emissions?
Halstead - 345 East 56th Street NY, NY 10022 reported 1,390 tCO₂e of greenhouse-gas emissions (6.1 kgCO₂e/ft²) for 2024.
Where is Halstead - 345 East 56th Street NY, NY 10022?
Halstead - 345 East 56th Street NY, NY 10022 is at 1023 1 AVENUE, in New York City, New York 10022. Its coordinates are 40.75774, -73.96335 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Halstead - 345 East 56th Street NY, NY 10022 and when was it built?
Halstead - 345 East 56th Street NY, NY 10022 has 227,348 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1960 as its year built. It is classed as multifamily housing.
Is Halstead - 345 East 56th Street NY, NY 10022 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).
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, “Halstead - 345 East 56th Street NY, NY 10022, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/halstead-345-east-56th-street-ny-ny-10022-95bcde18 (data as of October 2, 2026).