GC 63 Madison Ave
Office in New York City, NY · 63 Madison Ave · 10016
At a glance
GC 63 Madison Ave is a 786,069-square-foot office building in New York City, New York, built in 1962. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 78.2 kBtu/ft² and 5,087 tCO₂e of greenhouse-gas emissions. That score is higher than 27% 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 | 64 (band C) |
| Site EUI | 78.2 kBtu/ft² |
| Source EUI | 142.7 kBtu/ft² |
| GHG emissions | 5,087 tCO₂e |
| GHG intensity | 6.5 kgCO₂e/ft² |
| Electricity | 7,045,450 kWh |
| Natural gas | 7,834 therms |
| Water use | 22,124 kgal |
| Gross floor area | 786,069 sq ft |
| Source record | nyc:2607418:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 64 | ±0 | 78.2 kBtu/ft² | 5,087 tCO₂e |
| 2022 | 64 | 84.3 kBtu/ft² | 4,691 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
- 63 Madison Ave
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.74348, -73.98607
Within ~1 km
Nearby benchmarked buildings
- Peter Cooper Villagescore 85
Multifamily Housing · 3,015,232 sq ft
- ESRT - Empire State Buildingscore 78
Office · 2,852,257 sq ft
- 11 Madison Avenuescore 77
Office · 2,228,574 sq ft
- (71003A) Herald Square Macy'sscore 70
Retail Store · 2,192,088 sq ft
- 51 Madisonscore 79
Office · 1,485,386 sq ft
- One Madison Avenuescore —
Office · 1,339,997 sq ft
See also: most efficient in New York City · biggest emitters
How does GC 63 Madison Ave 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. GC 63 Madison Ave's ENERGY STAR score of 64 compares with an average of 72 across the 2,519 that report a score; it scores higher than 27% of them and lower than 71%. Its site EUI of 78.2 kBtu/ft² is about 21% 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 6.5 kgCO₂e/ft² is about 12% above the group average of 5.8 kgCO₂e/ft².
At 786,069 sq ft, it is about 283% above the average floor area of 205,440 sq ft for those buildings. It was built in 1962, 22 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.
How has GC 63 Madison Ave's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for GC 63 Madison Ave, covering report years 2022–2023. Its ENERGY STAR score was 64 in both 2022 and 2023. Site EUI moved from 84.3 kBtu/ft² (2022) to 78.2 kBtu/ft² (2023), a 7% decrease. Reported emissions went from 4,691 tCO₂e to 5,087 tCO₂e over the same span (up 8%).
What does an ENERGY STAR score of 64 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 64 means the building performs better than about 64% of its national peers. BuildingCensus bands the score into report-card grades; 64 falls in band C — below median (55–69). It sits 11 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. GC 63 Madison Ave's 78.2 kBtu/ft² across 786,069 sq ft works out to about 61.5 billion Btu (18,015 MWh-equivalent) in 2023. Its source EUI of 142.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 7,045,450 kWh of electricity, 7,834 therms of natural gas and 22,124 thousand gallons of water for the year.
Which law requires GC 63 Madison Ave to report its energy use?
GC 63 Madison Ave 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:2607418:2023). 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
- 666 Third Avenue (Chrysler East)· 784,116 sq ft · score 79 (B)
- Colgate Palmolive Building (300 Park)· 777,658 sq ft · score 71 (B)
- DCAS_1035_Bronx County Hall of Justice· 775,600 sq ft · score 82 (B)
- 295 5th Ave· 771,659 sq ft · EUI 21.6 kBtu/ft²
- GCS - 135 West 50th St· 771,472 sq ft · score 86 (A)
- Atlantic Terminal (139 Flatbush Avenue aka 200 Ft Greene Place)· 771,369 sq ft · EUI 69.2 kBtu/ft²
- 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 GC 63 Madison Ave's energy grade?
GC 63 Madison Ave scores 64 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 GC 63 Madison Ave use?
Its 2023 site energy-use intensity was 78.2 kBtu/ft² (142.7 kBtu/ft² source) across 786,069 sq ft, including 7,045,450 kWh of electricity and 7,834 therms of natural gas.
What are GC 63 Madison Ave's carbon emissions?
GC 63 Madison Ave reported 5,087 tCO₂e of greenhouse-gas emissions (6.5 kgCO₂e/ft²) for 2023.
Where is GC 63 Madison Ave?
GC 63 Madison Ave is in New York City, New York 10016. Its coordinates are 40.74348, -73.98607 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is GC 63 Madison Ave and when was it built?
GC 63 Madison Ave has 786,069 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1962 as its year built. It is classed as office.
Is GC 63 Madison Ave 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, “GC 63 Madison Ave, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/gc-63-madison-ave-dd641a48 (data as of October 2, 2026).