HARTFORD PROPERTIES 41 LLC
Office in New York City, NY · 41 UNION SQUARE WEST · 10003
At a glance
HARTFORD PROPERTIES 41 LLC is a 76,934-square-foot office building at 41 UNION SQUARE WEST in New York City, New York, built in 1896. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 85 out of 100 (grade A), a site energy-use intensity of 77.7 kBtu/ft² and 506 tCO₂e of greenhouse-gas emissions. That score is higher than 63% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 85 (band A) |
| Site EUI | 77.7 kBtu/ft² |
| Source EUI | 158.5 kBtu/ft² |
| GHG emissions | 506 tCO₂e |
| GHG intensity | 6.6 kgCO₂e/ft² |
| Electricity | 991,681 kWh |
| Natural gas | 25,939 therms |
| Water use | 2,182 kgal |
| Gross floor area | 76,934 sq ft |
| Source record | nyc:2784225:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 85 | -7 | 77.7 kBtu/ft² | 506 tCO₂e |
| 2022 | 92 | 46.1 kBtu/ft² | 300 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 41 UNION SQUARE WEST
- City
- New York City
- State
- New York
- ZIP
- 10003
- Coordinates
- 40.73698, -73.99045
Within ~1 km
Nearby benchmarked buildings
College/University · 7,553,129 sq ft
College/University · 5,000,000 sq ft
- 11 Madison Avenuescore 77
Office · 2,228,574 sq ft
- 51 Madisonscore 79
Office · 1,485,386 sq ft
- One Madison Avenuescore —
Office · 1,339,997 sq ft
- ConEd Irving Placescore 55
Office · 1,255,204 sq ft
See also: most efficient in New York City · biggest emitters
How does HARTFORD PROPERTIES 41 LLC 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. HARTFORD PROPERTIES 41 LLC's ENERGY STAR score of 85 compares with an average of 72 across the 2,519 that report a score; it scores higher than 63% of them and lower than 35%. Its site EUI of 77.7 kBtu/ft² is about 20% above the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.6 kgCO₂e/ft² is about 14% above the group average of 5.8 kgCO₂e/ft².
At 76,934 sq ft, it is about 63% below the average floor area of 205,440 sq ft for those buildings. It was built in 1896, 44 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 HARTFORD PROPERTIES 41 LLC's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for HARTFORD PROPERTIES 41 LLC, covering report years 2022–2023. Its ENERGY STAR score went from 92 in 2022 to 85 in 2023 (-7 points); its best year on file was 2022, at 92. Site EUI moved from 46.1 kBtu/ft² (2022) to 77.7 kBtu/ft² (2023), an 69% increase. Reported emissions went from 300 tCO₂e to 506 tCO₂e over the same span (up 69%).
What does an ENERGY STAR score of 85 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 85 means the building performs better than about 85% of its national peers. BuildingCensus bands the score into report-card grades; 85 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. HARTFORD PROPERTIES 41 LLC's 77.7 kBtu/ft² across 76,934 sq ft works out to about 6 billion Btu (1,752 MWh-equivalent) in 2023. Its source EUI of 158.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 991,681 kWh of electricity, 25,939 therms of natural gas and 2,182 thousand gallons of water for the year.
Which law requires HARTFORD PROPERTIES 41 LLC to report its energy use?
HARTFORD PROPERTIES 41 LLC 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 2023 disclosure (source record nyc:2784225:2023). 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 office buildings in New York City
- 191 Joralemon St· 76,916 sq ft · score 66 (C)
- CCBQ HQ· 76,916 sq ft · score 50 (D)
- ConEd College Point Yard· 76,842 sq ft · score 69 (C)
- Dom Ben Realty Corp· 76,811 sq ft · score 41 (D)
- 116 East 27th Street· 76,728 sq ft · score 90 (A)
- ADCO - 201 Edward Curry Avenue· 76,683 sq ft · score 87 (A)
- 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 HARTFORD PROPERTIES 41 LLC's energy grade?
HARTFORD PROPERTIES 41 LLC scores 85 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does HARTFORD PROPERTIES 41 LLC use?
Its 2023 site energy-use intensity was 77.7 kBtu/ft² (158.5 kBtu/ft² source) across 76,934 sq ft, including 991,681 kWh of electricity and 25,939 therms of natural gas.
What are HARTFORD PROPERTIES 41 LLC's carbon emissions?
HARTFORD PROPERTIES 41 LLC reported 506 tCO₂e of greenhouse-gas emissions (6.6 kgCO₂e/ft²) for 2023.
Where is HARTFORD PROPERTIES 41 LLC?
HARTFORD PROPERTIES 41 LLC is at 41 UNION SQUARE WEST, in New York City, New York 10003. Its coordinates are 40.73698, -73.99045 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is HARTFORD PROPERTIES 41 LLC and when was it built?
HARTFORD PROPERTIES 41 LLC has 76,934 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1896 as its year built. It is classed as office.
Is HARTFORD PROPERTIES 41 LLC covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “HARTFORD PROPERTIES 41 LLC, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/hartford-properties-41-llc-b51c036c (data as of October 2, 2026).