505 St. Marks Avenue
Multifamily Housing in New York City, NY · 11238
At a glance
505 St. Marks Avenue is a 99,821-square-foot multifamily housing building in New York City, New York, built in 2014. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 90 out of 100 (grade A), a site energy-use intensity of 62.9 kBtu/ft² and 417 tCO₂e of greenhouse-gas emissions. That score is higher than 76% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 90 (band A) |
| Site EUI | 62.9 kBtu/ft² |
| Source EUI | 110.5 kBtu/ft² |
| GHG emissions | 417 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 630,702 kWh |
| Natural gas | 31,866 therms |
| Water use | 4,719 kgal |
| Gross floor area | 99,821 sq ft |
| Source record | nyc:30802036:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 90 | ±0 | 62.9 kBtu/ft² | 417 tCO₂e |
| 2023 | 90 | 63.4 kBtu/ft² | 403 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
- 505 St. Marks Avenue
- City
- New York City
- State
- New York
- ZIP
- 11238
- Coordinates
- 40.67628, -73.95769
Within ~1 km
Nearby benchmarked buildings
Museum · 550,409 sq ft
- Bedford Union Armoryscore 33
Multifamily Housing · 527,267 sq ft
Multifamily Housing · 373,445 sq ft
- Bedford Courts III LLCscore 100
Multifamily Housing · 370,568 sq ft
K-12 School · 328,800 sq ft
K-12 School · 324,000 sq ft
See also: most efficient in New York City · biggest emitters
How does 505 St. Marks Avenue compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. 505 St. Marks Avenue's ENERGY STAR score of 90 compares with an average of 63 across the 22,829 that report a score; it scores higher than 76% of them and lower than 22%. Its site EUI of 62.9 kBtu/ft² is about 16% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.9 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 99,821 sq ft, it is roughly in line with the average floor area of 100,951 sq ft for those buildings. It was built in 2014, 62 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 505 St. Marks Avenue's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 505 St. Marks Avenue, covering report years 2023–2024. Its ENERGY STAR score was 90 in both 2023 and 2024. Site EUI moved from 63.4 kBtu/ft² (2023) to 62.9 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 403 tCO₂e to 417 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 90 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 90 means the building performs better than about 90% of its national peers. BuildingCensus bands the score into report-card grades; 90 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 505 St. Marks Avenue's 62.9 kBtu/ft² across 99,821 sq ft works out to about 6.3 billion Btu (1,840 MWh-equivalent) in 2024. Its source EUI of 110.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 630,702 kWh of electricity, 31,866 therms of natural gas and 4,719 thousand gallons of water for the year.
Which law requires 505 St. Marks Avenue to report its energy use?
505 St. Marks Avenue 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:30802036:2024). 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 multifamily housing buildings in New York City
- 101 West 23rd Street· 99,819 sq ft · score 72 (B)
- Andrews Building Corp : 165 Sherman Ave· 99,778 sq ft · score 100 (A)
- Wavecrest CHILD - 1 Haven Plaza· 99,760 sq ft
- Chestnut - 1340 Merriam Avenue· 99,758 sq ft · score 43 (D)
- Kips Bay Court - 484 2nd Avenue· 99,752 sq ft
- The Chatsworth (353 W 71st Street)· 99,751 sq ft
- Multifamily Housing buildings in New York City· 33,022 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 505 St. Marks Avenue's energy grade?
505 St. Marks Avenue scores 90 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 505 St. Marks Avenue use?
Its 2024 site energy-use intensity was 62.9 kBtu/ft² (110.5 kBtu/ft² source) across 99,821 sq ft, including 630,702 kWh of electricity and 31,866 therms of natural gas.
What are 505 St. Marks Avenue's carbon emissions?
505 St. Marks Avenue reported 417 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2024.
Where is 505 St. Marks Avenue?
505 St. Marks Avenue is in New York City, New York 11238. Its coordinates are 40.67628, -73.95769 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 505 St. Marks Avenue and when was it built?
505 St. Marks Avenue has 99,821 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2014 as its year built. It is classed as multifamily housing.
Is 505 St. Marks Avenue 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).
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, “505 St. Marks Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/505-st-marks-avenue-cf26315c (data as of October 2, 2026).