Halley Place
Multifamily Housing in Washington, DC, DC · 10 Halley Place, SE · 20032
At a glance
Halley Place is a 38,056-square-foot multifamily housing building at 10 Halley Place, SE in Washington, DC, built in 2002. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 72 out of 100 (grade B), a site energy-use intensity of 54.0 kBtu/ft² and 127 tCO₂e of greenhouse-gas emissions. That score is higher than 40% 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 | 72 (band B) |
| Site EUI | 54.0 kBtu/ft² |
| Source EUI | 88.4 kBtu/ft² |
| GHG emissions | 127 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 201,886 kWh |
| Natural gas | 13,666 therms |
| Water use | 1,966 kgal |
| Gross floor area | 38,056 sq ft |
| Source record | dc:PM20637976:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 72 | +11 | 54.0 kBtu/ft² | 127 tCO₂e |
| 2023 | 61 | -6 | 55.2 kBtu/ft² | 138 tCO₂e |
| 2022 | 67 | 58.7 kBtu/ft² | 145 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
HALLEY PLACE CONDOMINIUM
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Location
- Address
- 10 Halley Place, SE
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20032
- Coordinates
- 38.83541, -77.00686
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does Halley Place 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. Halley Place's ENERGY STAR score of 72 compares with an average of 72 across the 1,618 that report a score; it scores higher than 40% of them and lower than 59%. Its site EUI of 54.0 kBtu/ft² is roughly in line with the average of 51.1 kBtu/ft². Its emissions intensity of 3.4 kgCO₂e/ft² is about 12% below the group average of 3.8 kgCO₂e/ft².
At 38,056 sq ft, it is about 72% below the average floor area of 136,346 sq ft for those buildings. It was built in 2002, 37 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 Halley Place's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for Halley Place, covering report years 2022–2024. Its ENERGY STAR score went from 67 in 2022 to 72 in 2024 (+5 points). Site EUI moved from 58.7 kBtu/ft² (2022) to 54.0 kBtu/ft² (2024), a 8% decrease. Reported emissions went from 145 tCO₂e to 127 tCO₂e over the same span (down 12%).
What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 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. Halley Place's 54.0 kBtu/ft² across 38,056 sq ft works out to about 2.1 billion Btu (602 MWh-equivalent) in 2024. Its source EUI of 88.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 201,886 kWh of electricity, 13,666 therms of natural gas and 1,966 thousand gallons of water for the year.
Which law requires Halley Place to report its energy use?
Halley Place 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:PM20637976:2024). 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
- 4111-4115 W St. NW· 38,008 sq ft · score 71 (B)
- 1326 Florida Avenue NE· 37,983 sq ft · score 67 (C)
- Garfield Hills - 2313-2323 Hartford Street SE· 37,980 sq ft · score 83 (B)
- Washington Place Condominiums· 37,805 sq ft · score 81 (B)
- Chevy Chase Towers· 37,720 sq ft · score 87 (A)
- River Hill Apts 2946 2nd Street· 37,680 sq ft · score 43 (D)
- 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 Halley Place's energy grade?
Halley Place scores 72 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Halley Place use?
Its 2024 site energy-use intensity was 54.0 kBtu/ft² (88.4 kBtu/ft² source) across 38,056 sq ft, including 201,886 kWh of electricity and 13,666 therms of natural gas.
What are Halley Place's carbon emissions?
Halley Place reported 127 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is Halley Place?
Halley Place is at 10 Halley Place, SE, in Washington, DC 20032. Its coordinates are 38.83541, -77.00686 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Halley Place and when was it built?
Halley Place has 38,056 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2002 as its year built. It is classed as multifamily housing.
Is Halley Place 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, “Halley Place, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/halley-place-04c2c4da (data as of July 9, 2026).