1133 20th Street Building Corp
Office in Washington, DC, DC · 1133 20th Street NW · 20036
At a glance
1133 20th Street Building Corp is a 136,386-square-foot office building at 1133 20th Street NW in Washington, DC, built in 1984. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 45.0 kBtu/ft² and 538 tCO₂e of greenhouse-gas emissions. That score is higher than 36% 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 | 70 (band B) |
| Site EUI | 45.0 kBtu/ft² |
| Source EUI | 125.9 kBtu/ft² |
| GHG emissions | 538 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 1,797,891 kWh |
| Natural gas | 0 therms |
| Water use | 839 kgal |
| Gross floor area | 136,386 sq ft |
| Source record | dc:PM3475610:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 70 | -2 | 45.0 kBtu/ft² | 538 tCO₂e |
| 2023 | 72 | +17 | 43.3 kBtu/ft² | 518 tCO₂e |
| 2022 | 55 | -3 | 56.9 kBtu/ft² | 636 tCO₂e |
| 2021 | 58 | -8 | 54.8 kBtu/ft² | 652 tCO₂e |
| 2020 | 66 | +14 | 50.2 kBtu/ft² | 616 tCO₂e |
| 2019 | 52 | -1 | 71.6 kBtu/ft² | 879 tCO₂e |
| 2018 | 53 | -6 | 70.4 kBtu/ft² | 864 tCO₂e |
| 2017 | 59 | +6 | 71.5 kBtu/ft² | 1,018 tCO₂e |
| 2016 | 53 | -1 | 78.0 kBtu/ft² | 1,147 tCO₂e |
| 2015 | 54 | ±0 | 77.6 kBtu/ft² | 1,332 tCO₂e |
| 2014 | 54 | -1 | 76.7 kBtu/ft² | 1,317 tCO₂e |
| 2013 | 55 | -3 | 76.0 kBtu/ft² | 1,234 tCO₂e |
| 2012 | 58 | 74.1 kBtu/ft² | 1,346 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
1133 20TH ST BUILDING CORP
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Location
- Address
- 1133 20th Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20036
- Coordinates
- 38.90496, -77.04451
Within ~1 km
Nearby benchmarked buildings
- BEPS1 - Foggy Bottom Campusscore —
Mixed Use Property · 5,533,789 sq ft
- Main Complexscore 59
Office · 1,872,507 sq ft
- International Squarescore 56
Office · 1,233,833 sq ft
- Ross Hall Groupscore —
College/University · 1,047,627 sq ft
- Lafayette Centrescore 74
Office · 908,482 sq ft
Mixed Use Property · 844,878 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1133 20th Street Building Corp 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 20th Street Building Corp's ENERGY STAR score of 70 compares with an average of 70 across the 774 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 45.0 kBtu/ft² is about 19% 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 4.0 kgCO₂e/ft² is about 21% below the group average of 5.0 kgCO₂e/ft².
At 136,386 sq ft, it is about 37% below the average floor area of 216,135 sq ft for those buildings. It was built in 1984, 10 years later 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 20th Street Building Corp's energy performance changed over time?
BuildingCensus holds 13 Washington, DC disclosures for 1133 20th Street Building Corp, covering report years 2012–2024. Its ENERGY STAR score went from 58 in 2012 to 70 in 2024 (+12 points); its best year on file was 2023, at 72. Site EUI moved from 74.1 kBtu/ft² (2012) to 45.0 kBtu/ft² (2024), a 39% decrease. Reported emissions went from 1,346 tCO₂e to 538 tCO₂e over the same span (down 60%).
What does an ENERGY STAR score of 70 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 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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 20th Street Building Corp's 45.0 kBtu/ft² across 136,386 sq ft works out to about 6.1 billion Btu (1,799 MWh-equivalent) in 2024. Its source EUI of 125.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,797,891 kWh of electricity, 0 therms of natural gas and 839 thousand gallons of water for the year.
Which law requires 1133 20th Street Building Corp to report its energy use?
1133 20th Street Building Corp 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:PM3475610:2024). 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
- 51 N Street NE· 136,270 sq ft · EUI 11.7 kBtu/ft²
- 900 G Street NW· 135,933 sq ft · score 70 (B)
- Gelman Building (gl124)· 135,863 sq ft · score 63 (C)
- 1300 19th St NW· 135,155 sq ft · score 77 (B)
- 1300 Connecticut Avenue NW· 134,864 sq ft · score 64 (C)
- 500 First Street NW· 134,435 sq ft · score 60 (C)
- 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
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- Biggest emitters in Washington, DC
Frequently asked questions
What is 1133 20th Street Building Corp's energy grade?
1133 20th Street Building Corp scores 70 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 20th Street Building Corp use?
Its 2024 site energy-use intensity was 45.0 kBtu/ft² (125.9 kBtu/ft² source) across 136,386 sq ft, including 1,797,891 kWh of electricity and 0 therms of natural gas.
What are 1133 20th Street Building Corp's carbon emissions?
1133 20th Street Building Corp reported 538 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is 1133 20th Street Building Corp?
1133 20th Street Building Corp is at 1133 20th Street NW, in Washington, DC 20036. Its coordinates are 38.90496, -77.04451 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1133 20th Street Building Corp and when was it built?
1133 20th Street Building Corp has 136,386 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is 1133 20th Street Building Corp 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 20th Street Building Corp, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1133-20th-street-building-corp-505bf00e (data as of July 9, 2026).