Winston House
Multifamily Housing in Washington, DC, DC · 2140 L Street NW · 20037
At a glance
Winston House is a 143,091-square-foot multifamily housing building at 2140 L Street NW in Washington, DC, built in 1990. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 46 out of 100 (grade D), a site energy-use intensity of 58.4 kBtu/ft² and 628 tCO₂e of greenhouse-gas emissions. That score is higher than 16% 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 | 46 (band D) |
| Site EUI | 58.4 kBtu/ft² |
| Source EUI | 126.3 kBtu/ft² |
| GHG emissions | 628 tCO₂e |
| GHG intensity | 4.4 kgCO₂e/ft² |
| Electricity | 1,557,884 kWh |
| Natural gas | 30,419 therms |
| Water use | 6,260 kgal |
| Gross floor area | 143,091 sq ft |
| Source record | dc:PM4018717:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 46 | -11 | 58.4 kBtu/ft² | 628 tCO₂e |
| 2023 | 57 | -15 | 57.8 kBtu/ft² | 599 tCO₂e |
| 2022 | 72 | -18 | 53.2 kBtu/ft² | 565 tCO₂e |
| 2021 | 90 | +13 | 35.9 kBtu/ft² | 554 tCO₂e |
| 2020 | 77 | -21 | 44.1 kBtu/ft² | 659 tCO₂e |
| 2019 | 98 | +25 | 35.0 kBtu/ft² | 515 tCO₂e |
| 2018 | 73 | 43.6 kBtu/ft² | 704 tCO₂e | |
| 2017 | — | 25.7 kBtu/ft² | 435 tCO₂e | |
| 2016 | — | 28.0 kBtu/ft² | 479 tCO₂e | |
| 2015 | — | 31.4 kBtu/ft² | 519 tCO₂e | |
| 2014 | — | 24.8 kBtu/ft² | 414 tCO₂e | |
| 2013 | — | 14.9 kBtu/ft² | 159 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
WINSTON HOUSE ASSOCIATES LLC
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Location
- Address
- 2140 L Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20037
- Coordinates
- 38.90359, -77.04791
Within ~1 km
Nearby benchmarked buildings
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- International Squarescore 56
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- Ross Hall Groupscore —
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- Columbia Plaza All Bldgsscore 30
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- Lafayette Centrescore 74
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See also: most efficient in Washington, DC · biggest emitters
How does Winston House 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. Winston House's ENERGY STAR score of 46 compares with an average of 72 across the 1,618 that report a score; it scores higher than 16% of them and lower than 83%. Its site EUI of 58.4 kBtu/ft² is about 14% 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 4.4 kgCO₂e/ft² is about 16% above the group average of 3.8 kgCO₂e/ft².
At 143,091 sq ft, it is roughly in line with the average floor area of 136,346 sq ft for those buildings. It was built in 1990, 25 years later than 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 Winston House's energy performance changed over time?
BuildingCensus holds 12 Washington, DC disclosures for Winston House, covering report years 2013–2024. Its ENERGY STAR score went from 73 in 2018 to 46 in 2024 (-27 points); its best year on file was 2019, at 98. Site EUI moved from 14.9 kBtu/ft² (2013) to 58.4 kBtu/ft² (2024), an 292% increase. Reported emissions went from 159 tCO₂e to 628 tCO₂e over the same span (up 296%).
What does an ENERGY STAR score of 46 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 46 means the building performs better than about 46% of its national peers. BuildingCensus bands the score into report-card grades; 46 falls in band D — lowest band (1–54). It sits 29 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. Winston House's 58.4 kBtu/ft² across 143,091 sq ft works out to about 8.4 billion Btu (2,449 MWh-equivalent) in 2024. Its source EUI of 126.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,557,884 kWh of electricity, 30,419 therms of natural gas and 6,260 thousand gallons of water for the year.
Which law requires Winston House to report its energy use?
Winston House 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:PM4018717:2024). 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
- The Lockwood (lc018)· 142,538 sq ft · score 97 (A)
- Coda at Bryant St. (cd063) (co186) (br995)· 142,530 sq ft · score 21 (D)
- Highland Dwellings II· 141,586 sq ft · score 10 (D)
- The Avidian· 140,679 sq ft · score 93 (A)
- Cathedral Court Condominium· 140,659 sq ft · score 76 (B)
- Bristol House· 140,498 sq ft · score 79 (B)
- Multifamily Housing buildings in Washington, DC· 1,799 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
- Most efficient large buildings in Washington, DC
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is Winston House's energy grade?
Winston House scores 46 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Winston House use?
Its 2024 site energy-use intensity was 58.4 kBtu/ft² (126.3 kBtu/ft² source) across 143,091 sq ft, including 1,557,884 kWh of electricity and 30,419 therms of natural gas.
What are Winston House's carbon emissions?
Winston House reported 628 tCO₂e of greenhouse-gas emissions (4.4 kgCO₂e/ft²) for 2024.
Where is Winston House?
Winston House is at 2140 L Street NW, in Washington, DC 20037. Its coordinates are 38.90359, -77.04791 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Winston House and when was it built?
Winston House has 143,091 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1990 as its year built. It is classed as multifamily housing.
Is Winston House 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, “Winston House, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/winston-house-c425122c (data as of July 9, 2026).