1133 15th Street
Office in Washington, DC, DC · 1133 15th Street NW · 20005
At a glance
1133 15th Street is a 231,581-square-foot office building at 1133 15th Street NW in Washington, DC, built in 1969. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 44.4 kBtu/ft² and 902 tCO₂e of greenhouse-gas emissions. That score is higher than 38% of the 774 scored office buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 44.4 kBtu/ft² |
| Source EUI | 124.3 kBtu/ft² |
| GHG emissions | 902 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 3,012,432 kWh |
| Natural gas | 0 therms |
| Water use | 3,327 kgal |
| Gross floor area | 231,581 sq ft |
| Source record | dc:PM6076576:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 71 | -2 | 44.4 kBtu/ft² | 902 tCO₂e |
| 2023 | 73 | ±0 | 42.3 kBtu/ft² | 881 tCO₂e |
| 2022 | 73 | -2 | 42.7 kBtu/ft² | 888 tCO₂e |
| 2021 | 75 | +1 | 40.1 kBtu/ft² | 835 tCO₂e |
| 2020 | 74 | +9 | 41.8 kBtu/ft² | 843 tCO₂e |
| 2019 | 65 | +8 | 54.1 kBtu/ft² | 1,164 tCO₂e |
| 2018 | 57 | 60.3 kBtu/ft² | 1,336 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
DWF V 1133 15TH LLC
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Location
- Address
- 1133 15th Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20005
- Coordinates
- 38.90485, -77.03402
Within ~1 km
Nearby benchmarked buildings
- Midtown Centerscore 91
Office · 911,093 sq ft
Office · 887,915 sq ft
- Hyatt Grand Washington DCscore 67
Hotel · 819,138 sq ft
- 1300 Buildingscore 95
Bank/Financial Institution · 803,167 sq ft
- NGS Headquartersscore 68
Office · 746,237 sq ft
- Columbia Squarescore 80
Office · 739,341 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1133 15th Street compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1133 15th Street's ENERGY STAR score of 71 compares with an average of 70 across the 774 that report a score; it scores higher than 38% of them and lower than 59%. Its site EUI of 44.4 kBtu/ft² is about 20% below the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.9 kgCO₂e/ft² is about 22% below the group average of 5.0 kgCO₂e/ft².
At 231,581 sq ft, it is roughly in line with the average floor area of 216,135 sq ft for those buildings. It was built in 1969, 5 years earlier than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 1133 15th Street's energy performance changed over time?
BuildingCensus holds 7 Washington, DC disclosures for 1133 15th Street, covering report years 2018–2024. Its ENERGY STAR score went from 57 in 2018 to 71 in 2024 (+14 points); its best year on file was 2021, at 75. Site EUI moved from 60.3 kBtu/ft² (2018) to 44.4 kBtu/ft² (2024), a 26% decrease. Reported emissions went from 1,336 tCO₂e to 902 tCO₂e over the same span (down 32%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 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. 1133 15th Street's 44.4 kBtu/ft² across 231,581 sq ft works out to about 10.3 billion Btu (3,013 MWh-equivalent) in 2024. Its source EUI of 124.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,012,432 kWh of electricity, 0 therms of natural gas and 3,327 thousand gallons of water for the year.
Which law requires 1133 15th Street to report its energy use?
1133 15th Street 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:PM6076576:2024). 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 office buildings in Washington, DC
- 1101 17th Street· 231,396 sq ft · score 69 (C)
- 2100 M Street· 231,233 sq ft · score 86 (A)
- 2099 Penn Ave· 231,164 sq ft · score 52 (D)
- Sumner Square· 228,520 sq ft · score 78 (B)
- 500 L'Enfant Plaza· 228,468 sq ft · score 88 (A)
- 3900 Wisconsin Ave NW· 228,271 sq ft
- Office buildings in Washington, DC· 899 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 1133 15th Street's energy grade?
1133 15th Street scores 71 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 1133 15th Street use?
Its 2024 site energy-use intensity was 44.4 kBtu/ft² (124.3 kBtu/ft² source) across 231,581 sq ft, including 3,012,432 kWh of electricity and 0 therms of natural gas.
What are 1133 15th Street's carbon emissions?
1133 15th Street reported 902 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2024.
Where is 1133 15th Street?
1133 15th Street is at 1133 15th Street NW, in Washington, DC 20005. Its coordinates are 38.90485, -77.03402 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1133 15th Street and when was it built?
1133 15th Street has 231,581 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1969 as its year built. It is classed as office.
Is 1133 15th Street 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, “1133 15th Street, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1133-15th-street-bff36815 (data as of July 9, 2026).