05WIY-WASSX-St. Regis Hotel, Washington, D.C.
Hotel in Washington, DC, DC · 923 16th and K Streets, NW · 20006
At a glance
05WIY-WASSX-St. Regis Hotel, Washington, D.C. is a 169,516-square-foot hotel at 923 16th and K Streets, NW in Washington, DC, built in 1927. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 23 out of 100 (grade D), a site energy-use intensity of 135.3 kBtu/ft² and 1,646 tCO₂e of greenhouse-gas emissions. That score is higher than 12% of the 251 scored hotel buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 23 (band D) |
| Site EUI | 135.3 kBtu/ft² |
| Source EUI | 269.4 kBtu/ft² |
| GHG emissions | 1,646 tCO₂e |
| GHG intensity | 9.7 kgCO₂e/ft² |
| Electricity | 3,614,839 kWh |
| Natural gas | 106,042 therms |
| Water use | 8,093 kgal |
| Gross floor area | 169,516 sq ft |
| Source record | dc:PM6277981:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 23 | +1 | 135.3 kBtu/ft² | 1,646 tCO₂e |
| 2023 | 22 | -2 | 133.5 kBtu/ft² | 1,633 tCO₂e |
| 2022 | 24 | -5 | 133.0 kBtu/ft² | 1,638 tCO₂e |
| 2021 | 29 | -3 | 126.3 kBtu/ft² | 1,572 tCO₂e |
| 2020 | 32 | +18 | 116.0 kBtu/ft² | 1,415 tCO₂e |
| 2019 | 14 | +11 | 154.5 kBtu/ft² | 1,954 tCO₂e |
| 2018 | 3 | -4 | 212.2 kBtu/ft² | 2,600 tCO₂e |
| 2017 | 7 | -15 | 129.7 kBtu/ft² | 2,966 tCO₂e |
| 2016 | 22 | 115.9 kBtu/ft² | 2,518 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
SELDAR DC HOLDING LLC
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Location
- Address
- 923 16th and K Streets, NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20006
- Coordinates
- 38.90210, -77.03610
Within ~1 km
Nearby benchmarked buildings
- Main Complexscore 59
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- International Squarescore 56
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- Midtown Centerscore 91
Office · 911,093 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 05WIY-WASSX-St. Regis Hotel, Washington, D.C. compare with other hotel buildings in Washington, DC?
The latest disclosures cover 257 hotel buildings in Washington, DC, out of 6,870 buildings citywide. 05WIY-WASSX-St. Regis Hotel, Washington, D.C.'s ENERGY STAR score of 23 compares with an average of 58 across the 251 that report a score; it scores higher than 12% of them and lower than 87%. Its site EUI of 135.3 kBtu/ft² is about 54% above the average of 87.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.7 kgCO₂e/ft² is about 41% above the group average of 6.9 kgCO₂e/ft².
At 169,516 sq ft, it is about 26% below the average floor area of 227,860 sq ft for those buildings. It was built in 1927, 47 years earlier than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has 05WIY-WASSX-St. Regis Hotel, Washington, D.C.'s energy performance changed over time?
BuildingCensus holds 9 Washington, DC disclosures for 05WIY-WASSX-St. Regis Hotel, Washington, D.C., covering report years 2016–2024. Its ENERGY STAR score went from 22 in 2016 to 23 in 2024 (+1 points); its best year on file was 2020, at 32. Site EUI moved from 115.9 kBtu/ft² (2016) to 135.3 kBtu/ft² (2024), an 17% increase. Reported emissions went from 2,518 tCO₂e to 1,646 tCO₂e over the same span (down 35%).
What does an ENERGY STAR score of 23 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 23 means the building performs better than about 23% of its national peers. BuildingCensus bands the score into report-card grades; 23 falls in band D — lowest band (1–54). It sits 52 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. 05WIY-WASSX-St. Regis Hotel, Washington, D.C.'s 135.3 kBtu/ft² across 169,516 sq ft works out to about 22.9 billion Btu (6,722 MWh-equivalent) in 2024. Its source EUI of 269.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,614,839 kWh of electricity, 106,042 therms of natural gas and 8,093 thousand gallons of water for the year.
Which law requires 05WIY-WASSX-St. Regis Hotel, Washington, D.C. to report its energy use?
05WIY-WASSX-St. Regis Hotel, Washington, D.C. 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:PM6277981:2024). 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 hotel buildings in Washington, DC
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- 238-HGIMStreet· 167,888 sq ft · score 60 (C)
- WML Melrose Georgetown Hotel· 164,017 sq ft · score 77 (B)
- 132 - Hampton Inn Washington D.C.· 163,500 sq ft · score 69 (C)
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- Hotel buildings in Washington, DC· 257 benchmarked
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Frequently asked questions
What is 05WIY-WASSX-St. Regis Hotel, Washington, D.C.'s energy grade?
05WIY-WASSX-St. Regis Hotel, Washington, D.C. scores 23 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 05WIY-WASSX-St. Regis Hotel, Washington, D.C. use?
Its 2024 site energy-use intensity was 135.3 kBtu/ft² (269.4 kBtu/ft² source) across 169,516 sq ft, including 3,614,839 kWh of electricity and 106,042 therms of natural gas.
What are 05WIY-WASSX-St. Regis Hotel, Washington, D.C.'s carbon emissions?
05WIY-WASSX-St. Regis Hotel, Washington, D.C. reported 1,646 tCO₂e of greenhouse-gas emissions (9.7 kgCO₂e/ft²) for 2024.
Where is 05WIY-WASSX-St. Regis Hotel, Washington, D.C.?
05WIY-WASSX-St. Regis Hotel, Washington, D.C. is at 923 16th and K Streets, NW, in Washington, DC 20006. Its coordinates are 38.90210, -77.03610 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 05WIY-WASSX-St. Regis Hotel, Washington, D.C. and when was it built?
05WIY-WASSX-St. Regis Hotel, Washington, D.C. has 169,516 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1927 as its year built. It is classed as hotel.
Is 05WIY-WASSX-St. Regis Hotel, Washington, D.C. 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, “05WIY-WASSX-St. Regis Hotel, Washington, D.C., Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/05wiy-wassx-st-regis-hotel-washington-d-c-af05a0ac (data as of July 9, 2026).