ACS_1_ACS Administrative Site
Office in New York City, NY · 150 William St · 10038
At a glance
ACS_1_ACS Administrative Site is a 436,836-square-foot office building at 150 William St in New York City, New York, built in 1927. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 55 out of 100 (grade C), a site energy-use intensity of 63.8 kBtu/ft² and 3,032 tCO₂e of greenhouse-gas emissions. That score is higher than 19% 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 | 55 (band C) |
| Site EUI | 63.8 kBtu/ft² |
| Source EUI | 178.8 kBtu/ft² |
| GHG emissions | 3,032 tCO₂e |
| GHG intensity | 6.9 kgCO₂e/ft² |
| Electricity | 8,173,976 kWh |
| Water use | 13 kgal |
| Gross floor area | 436,836 sq ft |
| Source record | nyc:26656542:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 55 | -34 | 63.8 kBtu/ft² | 3,032 tCO₂e |
| 2022 | 89 | 34.7 kBtu/ft² | 1,283 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
- 150 William St
- City
- New York City
- State
- New York
- ZIP
- 10038
- Coordinates
- 40.70973, -74.00625
Within ~1 km
Nearby benchmarked buildings
- 55 Waterscore 78
Office · 3,486,407 sq ft
Office · 2,542,563 sq ft
- One Liberty Plaza (149 BROADWAY)score 75
Office · 2,346,193 sq ft
- 28 Libertyscore 59
Financial Office · 2,200,000 sq ft
- 200 West Streetscore 83
Financial Office · 2,030,382 sq ft
- 120 Broadway Holdings, LLCscore 78
Office · 1,910,503 sq ft
See also: most efficient in New York City · biggest emitters
How does ACS_1_ACS Administrative Site 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. ACS_1_ACS Administrative Site's ENERGY STAR score of 55 compares with an average of 72 across the 2,519 that report a score; it scores higher than 19% of them and lower than 80%. Its site EUI of 63.8 kBtu/ft² is roughly in line with the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.9 kgCO₂e/ft² is about 19% above the group average of 5.8 kgCO₂e/ft².
At 436,836 sq ft, it is about twice the average floor area of 205,440 sq ft for those buildings. It was built in 1927, 13 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 ACS_1_ACS Administrative Site's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for ACS_1_ACS Administrative Site, covering report years 2022–2023. Its ENERGY STAR score went from 89 in 2022 to 55 in 2023 (-34 points); its best year on file was 2022, at 89. Site EUI moved from 34.7 kBtu/ft² (2022) to 63.8 kBtu/ft² (2023), an 84% increase. Reported emissions went from 1,283 tCO₂e to 3,032 tCO₂e over the same span (up 136%).
What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. ACS_1_ACS Administrative Site's 63.8 kBtu/ft² across 436,836 sq ft works out to about 27.9 billion Btu (8,168 MWh-equivalent) in 2023. Its source EUI of 178.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 8,173,976 kWh of electricity and 13 thousand gallons of water for the year.
Which law requires ACS_1_ACS Administrative Site to report its energy use?
ACS_1_ACS Administrative Site 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:26656542:2023). 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
- 333 7th Avenue· 435,600 sq ft · EUI 68.4 kBtu/ft²
- 11 Broadway -Manhattan· 434,220 sq ft · score 96 (A)
- 230 Fifth Ave LLC· 433,737 sq ft · score 78 (B)
- 111 Broadway· 433,015 sq ft · score 78 (B)
- ESRT - 1359 Broadway (1355 BROADWAY)· 432,310 sq ft · score 88 (A)
- URA Group - 10 East 40th Street· 430,070 sq ft · score 66 (C)
- 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 ACS_1_ACS Administrative Site's energy grade?
ACS_1_ACS Administrative Site scores 55 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does ACS_1_ACS Administrative Site use?
Its 2023 site energy-use intensity was 63.8 kBtu/ft² (178.8 kBtu/ft² source) across 436,836 sq ft, including 8,173,976 kWh of electricity.
What are ACS_1_ACS Administrative Site's carbon emissions?
ACS_1_ACS Administrative Site reported 3,032 tCO₂e of greenhouse-gas emissions (6.9 kgCO₂e/ft²) for 2023.
Where is ACS_1_ACS Administrative Site?
ACS_1_ACS Administrative Site is at 150 William St, in New York City, New York 10038. Its coordinates are 40.70973, -74.00625 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is ACS_1_ACS Administrative Site and when was it built?
ACS_1_ACS Administrative Site has 436,836 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1927 as its year built. It is classed as office.
Is ACS_1_ACS Administrative Site 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, “ACS_1_ACS Administrative Site, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/acs-1-acs-administrative-site-94330471 (data as of October 2, 2026).