Grunberg: 928 Broadway
Office in New York City, NY · 928 Broadway · 10010
At a glance
Grunberg: 928 Broadway is a 81,736-square-foot office building in New York City, New York, built in 1909. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 72 out of 100 (grade B), a site energy-use intensity of 64.0 kBtu/ft² and 448 tCO₂e of greenhouse-gas emissions. That score is higher than 38% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 72 (band B) |
| Site EUI | 64.0 kBtu/ft² |
| Source EUI | 125.8 kBtu/ft² |
| GHG emissions | 448 tCO₂e |
| GHG intensity | 5.5 kgCO₂e/ft² |
| Electricity | 802,980 kWh |
| Natural gas | 24,894 therms |
| Water use | 4,402 kgal |
| Gross floor area | 81,736 sq ft |
| Source record | nyc:3119494:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 72 | +6 | 64.0 kBtu/ft² | 448 tCO₂e |
| 2023 | 66 | +4 | 70.7 kBtu/ft² | 472 tCO₂e |
| 2022 | 62 | 77.6 kBtu/ft² | 437 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
- 928 Broadway
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74017, -73.98949
Within ~1 km
Nearby benchmarked buildings
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- 51 Madisonscore 79
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
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See also: most efficient in New York City · biggest emitters
How does Grunberg: 928 Broadway 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. Grunberg: 928 Broadway's ENERGY STAR score of 72 compares with an average of 72 across the 2,519 that report a score; it scores higher than 38% of them and lower than 61%. Its site EUI of 64.0 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 5.5 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 81,736 sq ft, it is about 60% below the average floor area of 205,440 sq ft for those buildings. It was built in 1909, 31 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 Grunberg: 928 Broadway's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Grunberg: 928 Broadway, covering report years 2022–2024. Its ENERGY STAR score went from 62 in 2022 to 72 in 2024 (+10 points). Site EUI moved from 77.6 kBtu/ft² (2022) to 64.0 kBtu/ft² (2024), a 18% decrease. Reported emissions went from 437 tCO₂e to 448 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 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. Grunberg: 928 Broadway's 64.0 kBtu/ft² across 81,736 sq ft works out to about 5.2 billion Btu (1,533 MWh-equivalent) in 2024. Its source EUI of 125.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 802,980 kWh of electricity, 24,894 therms of natural gas and 4,402 thousand gallons of water for the year.
Which law requires Grunberg: 928 Broadway to report its energy use?
Grunberg: 928 Broadway 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:3119494:2024). 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.
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- 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 Grunberg: 928 Broadway's energy grade?
Grunberg: 928 Broadway scores 72 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Grunberg: 928 Broadway use?
Its 2024 site energy-use intensity was 64.0 kBtu/ft² (125.8 kBtu/ft² source) across 81,736 sq ft, including 802,980 kWh of electricity and 24,894 therms of natural gas.
What are Grunberg: 928 Broadway's carbon emissions?
Grunberg: 928 Broadway reported 448 tCO₂e of greenhouse-gas emissions (5.5 kgCO₂e/ft²) for 2024.
Where is Grunberg: 928 Broadway?
Grunberg: 928 Broadway is in New York City, New York 10010. Its coordinates are 40.74017, -73.98949 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Grunberg: 928 Broadway and when was it built?
Grunberg: 928 Broadway has 81,736 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1909 as its year built. It is classed as office.
Is Grunberg: 928 Broadway 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, “Grunberg: 928 Broadway, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/grunberg-928-broadway-6828db70 (data as of October 2, 2026).