St. Johns Condominium
Multifamily Housing in New York City, NY · 259 21st Street · 11215
At a glance
St. Johns Condominium is a 50,354-square-foot multifamily housing building at 259 21st Street in New York City, New York, built in 2006. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 25.5 kBtu/ft² and 148 tCO₂e of greenhouse-gas emissions. That score is higher than 78% 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 | 91 (band A) |
| Site EUI | 25.5 kBtu/ft² |
| Source EUI | 71.3 kBtu/ft² |
| GHG emissions | 148 tCO₂e |
| GHG intensity | 2.9 kgCO₂e/ft² |
| Electricity | 375,984 kWh |
| Water use | 1,412 kgal |
| Gross floor area | 50,354 sq ft |
| Source record | nyc:53164292:2024 |
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
- 259 21st Street
- City
- New York City
- State
- New York
- ZIP
- 11215
- Coordinates
- 40.66085, -73.99257
Within ~1 km
Nearby benchmarked buildings
- Benchmarking Group - 106score 76
K-12 School · 273,059 sq ft
- 80 20th Streetscore 40
Office · 218,566 sq ft
Multifamily Housing · 196,963 sq ft
- FBTAscore 43
Distribution Center · 183,064 sq ft
Manufacturing/Industrial Plant · 174,838 sq ft
- DOE_6546_K088score 86
K-12 School · 170,400 sq ft
See also: most efficient in New York City · biggest emitters
How does St. Johns Condominium 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. St. Johns Condominium's ENERGY STAR score of 91 compares with an average of 63 across the 22,829 that report a score; it scores higher than 78% of them and lower than 21%. Its site EUI of 25.5 kBtu/ft² is about 66% 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 2.9 kgCO₂e/ft² is about 44% below the group average of 5.2 kgCO₂e/ft².
At 50,354 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 2006, 54 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.
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. St. Johns Condominium's 25.5 kBtu/ft² across 50,354 sq ft works out to about 1.3 billion Btu (376 MWh-equivalent) in 2024. Its source EUI of 71.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 375,984 kWh of electricity and 1,412 thousand gallons of water for the year.
Which law requires St. Johns Condominium to report its energy use?
St. Johns Condominium 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:53164292:2024). 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
- 41-16 51st Street· 50,342 sq ft · score 61 (C)
- 41-15 50th Street· 50,342 sq ft
- 4030 Bronx Boulevard· 50,338 sq ft · score 61 (C)
- Fairfiled: 47-19 Little Neck· 50,333 sq ft · score 25 (D)
- 165 West 127th Street (Parent Property)· 50,326 sq ft · score 35 (D)
- 65 S 11th Street· 50,312 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 St. Johns Condominium's energy grade?
St. Johns Condominium scores 91 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 St. Johns Condominium use?
Its 2024 site energy-use intensity was 25.5 kBtu/ft² (71.3 kBtu/ft² source) across 50,354 sq ft, including 375,984 kWh of electricity.
What are St. Johns Condominium's carbon emissions?
St. Johns Condominium reported 148 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2024.
Where is St. Johns Condominium?
St. Johns Condominium is at 259 21st Street, in New York City, New York 11215. Its coordinates are 40.66085, -73.99257 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is St. Johns Condominium and when was it built?
St. Johns Condominium has 50,354 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2006 as its year built. It is classed as multifamily housing.
Is St. Johns Condominium 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, “St. Johns Condominium, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/st-johns-condominium-c15c6a16 (data as of October 2, 2026).