Dafnonas Estates LTD: 8684 20th Ave
Multifamily Housing in New York City, NY · 8684 20th Ave · 11214
At a glance
Dafnonas Estates LTD: 8684 20th Ave is a 30,816-square-foot multifamily housing building in New York City, New York, built in 1923. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 27 out of 100 (grade D), a site energy-use intensity of 101.5 kBtu/ft² and 198 tCO₂e of greenhouse-gas emissions. That score is higher than 16% 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 | 27 (band D) |
| Site EUI | 101.5 kBtu/ft² |
| Source EUI | 128.2 kBtu/ft² |
| GHG emissions | 198 tCO₂e |
| GHG intensity | 6.4 kgCO₂e/ft² |
| Electricity | 114,384 kWh |
| Natural gas | 23,556 therms |
| Water use | 2,353 kgal |
| Gross floor area | 30,816 sq ft |
| Source record | nyc:58326793:2024 |
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
- 8684 20th Ave
- City
- New York City
- State
- New York
- ZIP
- 11214
- Coordinates
- 40.60325, -73.99968
Within ~1 km
Nearby benchmarked buildings
- 2224 CROPSEY AVE.score 100
Multifamily Housing · 808,372 sq ft
- Shore Haven (BBL: 3064670012)score 82
Multifamily Housing · 361,944 sq ft
- Shore Haven (BBL: 3064890001)score 81
Multifamily Housing · 354,882 sq ft
- Shore Haven (BBL: 3064690001)score 81
Multifamily Housing · 322,180 sq ft
- Caesar's Bayscore —
Retail Store · 309,567 sq ft
- Southampton Apartmentsscore 91
Multifamily Housing · 257,271 sq ft
See also: most efficient in New York City · biggest emitters
How does Dafnonas Estates LTD: 8684 20th Ave 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. Dafnonas Estates LTD: 8684 20th Ave's ENERGY STAR score of 27 compares with an average of 63 across the 22,829 that report a score; it scores higher than 16% of them and lower than 84%. Its site EUI of 101.5 kBtu/ft² is about 36% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.4 kgCO₂e/ft² is about 24% above the group average of 5.2 kgCO₂e/ft².
At 30,816 sq ft, it is about 69% below the average floor area of 100,951 sq ft for those buildings. It was built in 1923, 29 years earlier 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 27 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 27 means the building performs better than about 27% of its national peers. BuildingCensus bands the score into report-card grades; 27 falls in band D — lowest band (1–54). It sits 48 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. Dafnonas Estates LTD: 8684 20th Ave's 101.5 kBtu/ft² across 30,816 sq ft works out to about 3.1 billion Btu (917 MWh-equivalent) in 2024. Its source EUI of 128.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 114,384 kWh of electricity, 23,556 therms of natural gas and 2,353 thousand gallons of water for the year.
Which law requires Dafnonas Estates LTD: 8684 20th Ave to report its energy use?
Dafnonas Estates LTD: 8684 20th 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 2024 disclosure (source record nyc:58326793:2024). 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
- 100 Delancey· 30,812 sq ft · score 80 (B)
- 100 Delancey LLC - 100 Delancey st· 30,812 sq ft · score 2 (D)
- 2026 Walton Ave· 30,810 sq ft · score 85 (A)
- 1542 New York Avenue· 30,809 sq ft · score 13 (D)
- 1880 WALTON AVENUE· 30,805 sq ft · score 73 (B)
- 972 Sherman Avenue· 30,805 sq ft · score 47 (D)
- 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 Dafnonas Estates LTD: 8684 20th Ave's energy grade?
Dafnonas Estates LTD: 8684 20th Ave scores 27 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Dafnonas Estates LTD: 8684 20th Ave use?
Its 2024 site energy-use intensity was 101.5 kBtu/ft² (128.2 kBtu/ft² source) across 30,816 sq ft, including 114,384 kWh of electricity and 23,556 therms of natural gas.
What are Dafnonas Estates LTD: 8684 20th Ave's carbon emissions?
Dafnonas Estates LTD: 8684 20th Ave reported 198 tCO₂e of greenhouse-gas emissions (6.4 kgCO₂e/ft²) for 2024.
Where is Dafnonas Estates LTD: 8684 20th Ave?
Dafnonas Estates LTD: 8684 20th Ave is in New York City, New York 11214. Its coordinates are 40.60325, -73.99968 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Dafnonas Estates LTD: 8684 20th Ave and when was it built?
Dafnonas Estates LTD: 8684 20th Ave has 30,816 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1923 as its year built. It is classed as multifamily housing.
Is Dafnonas Estates LTD: 8684 20th Ave 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, “Dafnonas Estates LTD: 8684 20th Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/dafnonas-estates-ltd-8684-20th-ave-cb743fe0 (data as of October 2, 2026).