Somerset House Condominium Association
Multifamily Housing in Washington, DC, DC · 1801 16th Street, NW
At a glance
Somerset House Condominium Association is a 72,000-square-foot multifamily housing building at 1801 16th Street, NW in Washington, DC, built in 1917. In its 2017 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 30.2 kBtu/ft² and 187 tCO₂e of greenhouse-gas emissions. That score is higher than 92% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2017
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 30.2 kBtu/ft² |
| Source EUI | 67.4 kBtu/ft² |
| GHG emissions | 187 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 359,825 kWh |
| Natural gas | 9,470 therms |
| Water use | 1,257 kgal |
| Gross floor area | 72,000 sq ft |
| Source record | dc:PM4343400:2017 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2017latest | 99 | +22 | 30.2 kBtu/ft² | 187 tCO₂e |
| 2016 | 77 | -23 | 41.8 kBtu/ft² | 289 tCO₂e |
| 2015 | 100 | +26 | 25.9 kBtu/ft² | 192 tCO₂e |
| 2014 | 74 | +23 | 75.6 kBtu/ft² | 368 tCO₂e |
| 2013 | 51 | 93.5 kBtu/ft² | 431 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
SOMERSET HOUSE CONDO
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Location
- Address
- 1801 16th Street, NW
- City
- Washington, DC
- State
- District of Columbia
- Coordinates
- 38.91437, -77.03604
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does Somerset House Condominium Association compare with other multifamily housing buildings in Washington, DC?
The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. Somerset House Condominium Association's ENERGY STAR score of 99 compares with an average of 72 across the 1,618 that report a score; it scores higher than 92% of them and lower than 5%. Its site EUI of 30.2 kBtu/ft² is about 41% below the average of 51.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.6 kgCO₂e/ft² is about 32% below the group average of 3.8 kgCO₂e/ft².
At 72,000 sq ft, it is about half of the average floor area of 136,346 sq ft for those buildings. It was built in 1917, 48 years earlier than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Somerset House Condominium Association's energy performance changed over time?
BuildingCensus holds 5 Washington, DC disclosures for Somerset House Condominium Association, covering report years 2013–2017. Its ENERGY STAR score went from 51 in 2013 to 99 in 2017 (+48 points); its best year on file was 2015, at 100. Site EUI moved from 93.5 kBtu/ft² (2013) to 30.2 kBtu/ft² (2017), a 68% decrease. Reported emissions went from 431 tCO₂e to 187 tCO₂e over the same span (down 57%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 falls in band A — high performer (85–100). 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. Somerset House Condominium Association's 30.2 kBtu/ft² across 72,000 sq ft works out to about 2.2 billion Btu (637 MWh-equivalent) in 2017. Its source EUI of 67.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 359,825 kWh of electricity, 9,470 therms of natural gas and 1,257 thousand gallons of water for the year.
Which law requires Somerset House Condominium Association to report its energy use?
Somerset House Condominium Association 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 2017 disclosure (source record dc:PM4343400:2017). 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 multifamily housing buildings in Washington, DC
- The Archer· 71,970 sq ft · score 81 (B)
- Urban Village· 71,846 sq ft · score 32 (D)
- Altamont - 1901 Wyoming Ave NW· 71,791 sq ft · score 79 (B)
- 2501 25th Street SE· 71,745 sq ft · score 13 (D)
- The Brittany Apartments· 71,469 sq ft · score 69 (C)
- Letterman House· 71,400 sq ft · score 50 (D)
- Multifamily Housing buildings in Washington, DC· 1,799 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 Somerset House Condominium Association's energy grade?
Somerset House Condominium Association scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2017 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Somerset House Condominium Association use?
Its 2017 site energy-use intensity was 30.2 kBtu/ft² (67.4 kBtu/ft² source) across 72,000 sq ft, including 359,825 kWh of electricity and 9,470 therms of natural gas.
What are Somerset House Condominium Association's carbon emissions?
Somerset House Condominium Association reported 187 tCO₂e of greenhouse-gas emissions (2.6 kgCO₂e/ft²) for 2017.
Where is Somerset House Condominium Association?
Somerset House Condominium Association is at 1801 16th Street, NW, in Washington, DC. Its coordinates are 38.91437, -77.03604 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Somerset House Condominium Association and when was it built?
Somerset House Condominium Association has 72,000 sq ft of gross floor area, as reported in its 2017 disclosure. The disclosure lists 1917 as its year built. It is classed as multifamily housing.
Is Somerset House Condominium Association covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2017 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, “Somerset House Condominium Association, Washington, DC — 2017 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/somerset-house-condominium-association-26aaf8c5 (data as of July 9, 2026).