Quarles Gardens
Multifamily Housing in Washington, DC, DC · 4921-23-25 Quarles Street NE · 20019
At a glance
Quarles Gardens is a 26,700-square-foot multifamily housing building at 4921-23-25 Quarles Street NE in Washington, DC, built in 1968. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 62.6 kBtu/ft² and 107 tCO₂e of greenhouse-gas emissions. That score is higher than 31% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 62.6 kBtu/ft² |
| Source EUI | 100.1 kBtu/ft² |
| GHG emissions | 107 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 153,498 kWh |
| Natural gas | 11,483 therms |
| Water use | 1,366 kgal |
| Gross floor area | 26,700 sq ft |
| Source record | dc:PM20247280:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 64 | -1 | 62.6 kBtu/ft² | 107 tCO₂e |
| 2023 | 65 | +11 | 61.0 kBtu/ft² | 104 tCO₂e |
| 2022 | 54 | 72.8 kBtu/ft² | 121 tCO₂e |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 4921-23-25 Quarles Street NE
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20019
- Coordinates
- 38.90823, -76.93011
Within ~1 km
Nearby benchmarked buildings
- Kenilworth Courtsscore 32
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- Hilltop Apartmentsscore 91
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- Burrville Elementary Schoolscore 35
K-12 School · 95,000 sq ft
- Burrville Elementary Schoolscore 49
K-12 School · 93,239 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does Quarles Gardens compare with other multifamily housing buildings in Washington, DC?
The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. Quarles Gardens's ENERGY STAR score of 64 compares with an average of 72 across the 1,618 that report a score; it scores higher than 31% of them and lower than 68%. Its site EUI of 62.6 kBtu/ft² is about 23% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.0 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².
At 26,700 sq ft, it is about 80% below the average floor area of 136,346 sq ft for those buildings. Its 1968 construction date is close to the group's average year built (1965). 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 Quarles Gardens's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for Quarles Gardens, covering report years 2022–2024. Its ENERGY STAR score went from 54 in 2022 to 64 in 2024 (+10 points); its best year on file was 2023, at 65. Site EUI moved from 72.8 kBtu/ft² (2022) to 62.6 kBtu/ft² (2024), a 14% decrease. Reported emissions went from 121 tCO₂e to 107 tCO₂e over the same span (down 11%).
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 Washington, DC, 47% 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. Quarles Gardens's 62.6 kBtu/ft² across 26,700 sq ft works out to about 1.7 billion Btu (490 MWh-equivalent) in 2024. Its source EUI of 100.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 153,498 kWh of electricity, 11,483 therms of natural gas and 1,366 thousand gallons of water for the year.
Which law requires Quarles Gardens to report its energy use?
Quarles Gardens reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record dc:PM20247280:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
More multifamily housing buildings in Washington, DC
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- 5925 14th Street NW· 26,666 sq ft · score 60 (C)
- Fairway 2114 I· 26,640 sq ft · score 88 (A)
- Crescent Park Village - Cluster 05· 26,640 sq ft · score 44 (D)
- 1862 Mintwood Place· 26,535 sq ft · EUI 3.9 kBtu/ft²
- Vida Brightwood Senior Residences· 26,492 sq ft · score 86 (A)
- Multifamily Housing buildings in Washington, DC· 1,799 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
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Frequently asked questions
What is Quarles Gardens's energy grade?
Quarles Gardens scores 64 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Quarles Gardens use?
Its 2024 site energy-use intensity was 62.6 kBtu/ft² (100.1 kBtu/ft² source) across 26,700 sq ft, including 153,498 kWh of electricity and 11,483 therms of natural gas.
What are Quarles Gardens's carbon emissions?
Quarles Gardens reported 107 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is Quarles Gardens?
Quarles Gardens is at 4921-23-25 Quarles Street NE, in Washington, DC 20019. Its coordinates are 38.90823, -76.93011 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Quarles Gardens and when was it built?
Quarles Gardens has 26,700 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1968 as its year built. It is classed as multifamily housing.
Is Quarles Gardens covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2024 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Clean and Affordable Energy Act / BEPS.
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About this data
Source: Building Energy Benchmarking (Clean and Affordable Energy Act / BEPS), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Quarles Gardens, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/quarles-gardens-1c99fb4a (data as of July 9, 2026).