ARC NYC 123 WILLIAMS LLC
Office in New York City, NY · 123 William Street · 10036
At a glance
ARC NYC 123 WILLIAMS LLC is a 540,706-square-foot office building at 123 William Street in New York City, New York, built in 1957.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 4,374,152 kWh |
| Natural gas | 21,337 therms |
| Gross floor area | 540,706 sq ft |
| Source record | nyc:4424342:2023 |
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
- 123 William Street
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.70911, -74.00689
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 ARC NYC 123 WILLIAMS 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.
At 540,706 sq ft, it is about 163% above the average floor area of 205,440 sq ft for those buildings. It was built in 1957, 17 years later 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.
Which law requires ARC NYC 123 WILLIAMS LLC to report its energy use?
ARC NYC 123 WILLIAMS 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:4424342:2023). 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
- Sage Realty - 777 Third Avenue· 539,082 sq ft · score 65 (C)
- 02-3-New York 33ML· 537,854 sq ft · score 80 (B)
- 745 Fifth Ave.· 537,135 sq ft · score 77 (B)
- 600 Third Avenue· 531,600 sq ft · score 65 (C)
- 711 Third Avenue· 531,158 sq ft · score 84 (B)
- 1372 Broadway· 530,339 sq ft · score 55 (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 ARC NYC 123 WILLIAMS LLC's energy grade?
ARC NYC 123 WILLIAMS LLC did not report an ENERGY STAR score in its 2023 disclosure.
How much energy does ARC NYC 123 WILLIAMS LLC use?
No energy-use intensity was reported for 2023.
What are ARC NYC 123 WILLIAMS LLC's carbon emissions?
No greenhouse-gas emissions figure was reported for 2023.
Where is ARC NYC 123 WILLIAMS LLC?
ARC NYC 123 WILLIAMS LLC is at 123 William Street, in New York City, New York 10036. Its coordinates are 40.70911, -74.00689 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is ARC NYC 123 WILLIAMS LLC and when was it built?
ARC NYC 123 WILLIAMS LLC has 540,706 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1957 as its year built. It is classed as office.
Is ARC NYC 123 WILLIAMS 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, “ARC NYC 123 WILLIAMS LLC, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/arc-nyc-123-williams-llc-a6ca554b (data as of October 2, 2026).