1629 K St NW
Office in Washington, DC, DC · 20006
At a glance
1629 K St NW is a 110,784-square-foot office building in Washington, DC, built in 1963. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 55.5 kBtu/ft² and 471 tCO₂e of greenhouse-gas emissions. That score is higher than 32% 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 | 68 (band C) |
| Site EUI | 55.5 kBtu/ft² |
| Source EUI | 123.9 kBtu/ft² |
| GHG emissions | 471 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 1,218,724 kWh |
| Natural gas | 19,876 therms |
| Water use | 1,471 kgal |
| Gross floor area | 110,784 sq ft |
| Source record | dc:PM1423627:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 68 | -3 | 55.5 kBtu/ft² | 471 tCO₂e |
| 2023 | 71 | +2 | 52.0 kBtu/ft² | 459 tCO₂e |
| 2022 | 69 | -7 | 53.7 kBtu/ft² | 463 tCO₂e |
| 2021 | 76 | -4 | 43.3 kBtu/ft² | 424 tCO₂e |
| 2020 | 80 | +9 | 38.6 kBtu/ft² | 397 tCO₂e |
| 2019 | 71 | +3 | 51.9 kBtu/ft² | 550 tCO₂e |
| 2018 | 68 | -2 | 58.8 kBtu/ft² | 592 tCO₂e |
| 2017 | 70 | +5 | 68.7 kBtu/ft² | 725 tCO₂e |
| 2016 | 65 | +3 | 76.2 kBtu/ft² | 817 tCO₂e |
| 2015 | 62 | +7 | 83.8 kBtu/ft² | 974 tCO₂e |
| 2014 | 55 | -11 | 90.2 kBtu/ft² | 1,051 tCO₂e |
| 2013 | 66 | 85.6 kBtu/ft² | 896 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
DAVIS BUILDING LLC
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Location
- Address
- 1629 K St NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20006
- Coordinates
- 38.90292, -77.03790
Within ~1 km
Nearby benchmarked buildings
- Main Complexscore 59
Office · 1,872,507 sq ft
- International Squarescore 56
Office · 1,233,833 sq ft
- Midtown Centerscore 91
Office · 911,093 sq ft
- Lafayette Centrescore 74
Office · 908,482 sq ft
- 1300 Buildingscore 95
Bank/Financial Institution · 803,167 sq ft
- NGS Headquartersscore 68
Office · 746,237 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1629 K St NW compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1629 K St NW's ENERGY STAR score of 68 compares with an average of 70 across the 774 that report a score; it scores higher than 32% of them and lower than 66%. Its site EUI of 55.5 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 4.3 kgCO₂e/ft² is about 15% below the group average of 5.0 kgCO₂e/ft².
At 110,784 sq ft, it is about half of the average floor area of 216,135 sq ft for those buildings. It was built in 1963, 11 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 1629 K St NW's energy performance changed over time?
BuildingCensus holds 12 Washington, DC disclosures for 1629 K St NW, covering report years 2013–2024. Its ENERGY STAR score went from 66 in 2013 to 68 in 2024 (+2 points); its best year on file was 2020, at 80. Site EUI moved from 85.6 kBtu/ft² (2013) to 55.5 kBtu/ft² (2024), a 35% decrease. Reported emissions went from 896 tCO₂e to 471 tCO₂e over the same span (down 47%).
What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 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. 1629 K St NW's 55.5 kBtu/ft² across 110,784 sq ft works out to about 6.1 billion Btu (1,802 MWh-equivalent) in 2024. Its source EUI of 123.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,218,724 kWh of electricity, 19,876 therms of natural gas and 1,471 thousand gallons of water for the year.
Which law requires 1629 K St NW to report its energy use?
1629 K St NW 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:PM1423627:2024). 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
- 1901 Pennsylvania Ave (py21)· 110,731 sq ft · score 69 (C)
- Washington DC Corporate Center· 110,388 sq ft · score 71 (B)
- Meitnerium, LLC· 110,129 sq ft · score 39 (D)
- Wonder Plaza· 110,000 sq ft · score 16 (D)
- 1701 Rhode Island· 109,618 sq ft · score 95 (A)
- Main Building, 0201 17th St. NW· 109,609 sq ft · score 66 (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
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is 1629 K St NW's energy grade?
1629 K St NW scores 68 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1629 K St NW use?
Its 2024 site energy-use intensity was 55.5 kBtu/ft² (123.9 kBtu/ft² source) across 110,784 sq ft, including 1,218,724 kWh of electricity and 19,876 therms of natural gas.
What are 1629 K St NW's carbon emissions?
1629 K St NW reported 471 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is 1629 K St NW?
1629 K St NW is in Washington, DC 20006. Its coordinates are 38.90292, -77.03790 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1629 K St NW and when was it built?
1629 K St NW has 110,784 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1963 as its year built. It is classed as office.
Is 1629 K St NW 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, “1629 K St NW, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1629-k-st-nw-2ce578b0 (data as of July 9, 2026).