409 3rd Street SW
Office in Washington, DC, DC · 20024
At a glance
409 3rd Street SW is a 445,438-square-foot office building in Washington, DC, built in 1990. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 52.7 kBtu/ft² and 1,869 tCO₂e of greenhouse-gas emissions. That score is higher than 72% 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 | 83 (band B) |
| Site EUI | 52.7 kBtu/ft² |
| Source EUI | 147.5 kBtu/ft² |
| GHG emissions | 1,869 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 6,878,756 kWh |
| Natural gas | 0 therms |
| Water use | 4,478 kgal |
| Gross floor area | 445,438 sq ft |
| Source record | dc:PM1498178:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 83 | +6 | 52.7 kBtu/ft² | 1,869 tCO₂e |
| 2023 | 77 | +12 | 57.4 kBtu/ft² | 2,037 tCO₂e |
| 2022 | 65 | +2 | 66.1 kBtu/ft² | 2,584 tCO₂e |
| 2021 | 63 | +4 | 62.1 kBtu/ft² | 2,383 tCO₂e |
| 2020 | 59 | -4 | 68.6 kBtu/ft² | 2,639 tCO₂e |
| 2019 | 63 | +5 | 73.9 kBtu/ft² | 3,051 tCO₂e |
| 2018 | 58 | -13 | 79.3 kBtu/ft² | 3,275 tCO₂e |
| 2017 | 71 | +2 | 81.6 kBtu/ft² | 3,903 tCO₂e |
| 2015 | 69 | -8 | 86.9 kBtu/ft² | 5,062 tCO₂e |
| 2014 | 77 | 78.0 kBtu/ft² | 4,542 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
WOC LLC
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 409 3rd Street SW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20024
- Coordinates
- 38.88491, -77.01550
Within ~1 km
Nearby benchmarked buildings
- Constitution Centerscore 83
Office · 1,582,262 sq ft
- Waterside Towers and Townhomesscore 81
Multifamily Housing · 674,080 sq ft
- Two Independence Squarescore 99
Office · 634,947 sq ft
- Capital Galleryscore 74
Office · 572,811 sq ft
- 670 Mainescore 69
Office · 571,109 sq ft
- 101 Constitutionscore 67
Office · 558,162 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 409 3rd Street SW compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 409 3rd Street SW's ENERGY STAR score of 83 compares with an average of 70 across the 774 that report a score; it scores higher than 72% of them and lower than 25%. Its site EUI of 52.7 kBtu/ft² is roughly in line with 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 4.2 kgCO₂e/ft² is about 16% below the group average of 5.0 kgCO₂e/ft².
At 445,438 sq ft, it is about twice the average floor area of 216,135 sq ft for those buildings. It was built in 1990, 16 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 409 3rd Street SW's energy performance changed over time?
BuildingCensus holds 10 Washington, DC disclosures for 409 3rd Street SW, covering report years 2014, 2015, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 77 in 2014 to 83 in 2024 (+6 points). Site EUI moved from 78.0 kBtu/ft² (2014) to 52.7 kBtu/ft² (2024), a 32% decrease. Reported emissions went from 4,542 tCO₂e to 1,869 tCO₂e over the same span (down 59%).
What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 409 3rd Street SW's 52.7 kBtu/ft² across 445,438 sq ft works out to about 23.5 billion Btu (6,880 MWh-equivalent) in 2024. Its source EUI of 147.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,878,756 kWh of electricity, 0 therms of natural gas and 4,478 thousand gallons of water for the year.
Which law requires 409 3rd Street SW to report its energy use?
409 3rd Street SW 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:PM1498178:2024). 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
- 1015 Half Street· 440,937 sq ft · score 92 (A)
- 200 I Street Municipal Building· 440,069 sq ft · score 83 (B)
- 2000 Penn· 439,522 sq ft · score 77 (B)
- 800 K Street· 438,172 sq ft · score 78 (B)
- 1501 K St NW· 437,222 sq ft · score 71 (B)
- 1152 15th Street (Columbia Center)· 436,649 sq ft · score 85 (A)
- 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 409 3rd Street SW's energy grade?
409 3rd Street SW scores 83 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 409 3rd Street SW use?
Its 2024 site energy-use intensity was 52.7 kBtu/ft² (147.5 kBtu/ft² source) across 445,438 sq ft, including 6,878,756 kWh of electricity and 0 therms of natural gas.
What are 409 3rd Street SW's carbon emissions?
409 3rd Street SW reported 1,869 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is 409 3rd Street SW?
409 3rd Street SW is in Washington, DC 20024. Its coordinates are 38.88491, -77.01550 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 409 3rd Street SW and when was it built?
409 3rd Street SW has 445,438 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1990 as its year built. It is classed as office.
Is 409 3rd Street SW 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.
Working with Washington, DC building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “409 3rd Street SW, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/409-3rd-street-sw-1f8981eb (data as of July 9, 2026).