TRUSTEES OF THE MASONIC HALL
Office in New York City, NY · 71 WEST 23RD STREET · 10010
At a glance
TRUSTEES OF THE MASONIC HALL is a 421,647-square-foot office building at 71 WEST 23RD STREET in New York City, New York, built in 1930. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 20.9 kBtu/ft² and 981 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 20.9 kBtu/ft² |
| Source EUI | 56.3 kBtu/ft² |
| GHG emissions | 981 tCO₂e |
| GHG intensity | 2.3 kgCO₂e/ft² |
| Electricity | 2,428,430 kWh |
| Natural gas | 5,246 therms |
| Gross floor area | 421,647 sq ft |
| Source record | nyc:2591543:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 20.9 kBtu/ft² | 981 tCO₂e | |
| 2023 | 98 | +2 | 35.1 kBtu/ft² | 1,248 tCO₂e |
| 2022 | 96 | 44.2 kBtu/ft² | 1,260 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
- 71 WEST 23RD STREET
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74244, -73.99167
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does TRUSTEES OF THE MASONIC HALL 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. Its site EUI of 20.9 kBtu/ft² is about 68% below 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 2.3 kgCO₂e/ft² is about 60% below the group average of 5.8 kgCO₂e/ft².
At 421,647 sq ft, it is about twice the average floor area of 205,440 sq ft for those buildings. It was built in 1930, 10 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 TRUSTEES OF THE MASONIC HALL's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for TRUSTEES OF THE MASONIC HALL, covering report years 2022–2024. Its ENERGY STAR score went from 96 in 2022 to 98 in 2023 (+2 points). Site EUI moved from 44.2 kBtu/ft² (2022) to 20.9 kBtu/ft² (2024), a 53% decrease. Reported emissions went from 1,260 tCO₂e to 981 tCO₂e over the same span (down 22%).
What does a site EUI of 20.9 kBtu/ft² mean?
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. TRUSTEES OF THE MASONIC HALL's 20.9 kBtu/ft² across 421,647 sq ft works out to about 8.8 billion Btu (2,583 MWh-equivalent) in 2024. Its source EUI of 56.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,428,430 kWh of electricity and 5,246 therms of natural gas for the year.
Which law requires TRUSTEES OF THE MASONIC HALL to report its energy use?
TRUSTEES OF THE MASONIC HALL 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:2591543:2024). 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 office buildings in New York City
- Queen's Crossing· 420,083 sq ft · EUI 69.6 kBtu/ft²
- Queens Crossing Condominum· 418,000 sq ft · score 95 (A)
- Sage Realty - 747 Third Avenue· 417,356 sq ft · score 44 (D)
- 135 East 57th Street· 417,222 sq ft · score 65 (C)
- 101 Avenue of the Americas (95 6 AVENUE)· 416,948 sq ft · score 31 (D)
- 525 BUILDING CO.· 415,672 sq ft · score 92 (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 TRUSTEES OF THE MASONIC HALL's energy grade?
TRUSTEES OF THE MASONIC HALL did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 20.9 kBtu/ft².
How much energy does TRUSTEES OF THE MASONIC HALL use?
Its 2024 site energy-use intensity was 20.9 kBtu/ft² (56.3 kBtu/ft² source) across 421,647 sq ft, including 2,428,430 kWh of electricity and 5,246 therms of natural gas.
What are TRUSTEES OF THE MASONIC HALL's carbon emissions?
TRUSTEES OF THE MASONIC HALL reported 981 tCO₂e of greenhouse-gas emissions (2.3 kgCO₂e/ft²) for 2024.
Where is TRUSTEES OF THE MASONIC HALL?
TRUSTEES OF THE MASONIC HALL is at 71 WEST 23RD STREET, in New York City, New York 10010. Its coordinates are 40.74244, -73.99167 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is TRUSTEES OF THE MASONIC HALL and when was it built?
TRUSTEES OF THE MASONIC HALL has 421,647 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as office.
Is TRUSTEES OF THE MASONIC HALL 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, “TRUSTEES OF THE MASONIC HALL, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/trustees-of-the-masonic-hall-cb2e2c40 (data as of October 2, 2026).