BuildingCensus
D

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.

ENERGY STAR score
27
band D · 2024
Site EUI
101.5
kBtu/ft²
GHG emissions
198
tCO₂e
GHG intensity
6.4
kgCO₂e/ft²
Floor area
30,816
sq ft
Year built
1923
vintage
◆ Loading map…
85–10070–8455–691–54
This entry + 6 nearby

Local Law 84 (LL84) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score27 (band D)
Site EUI101.5 kBtu/ft²
Source EUI128.2 kBtu/ft²
GHG emissions198 tCO₂e
GHG intensity6.4 kgCO₂e/ft²
Electricity114,384 kWh
Natural gas23,556 therms
Water use2,353 kgal
Gross floor area30,816 sq ft
Source recordnyc: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.

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Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
8684 20th Ave
State
New York
ZIP
11214
Coordinates
40.60325, -73.99968

Within ~1 km

Nearby benchmarked buildings

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

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).

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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, “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).