The Clarence House (cl242)
Multifamily Housing in Washington, DC, DC · 4530 Connecticut Avenue, N.W. · 20008
At a glance
The Clarence House (cl242) is a 168,367-square-foot multifamily housing building at 4530 Connecticut Avenue, N.W. in Washington, DC, built in 1964. In its 2018 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 72 out of 100 (grade B), a site energy-use intensity of 54.6 kBtu/ft² and 619 tCO₂e of greenhouse-gas emissions. That score is higher than 40% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 72 (band B) |
| Site EUI | 54.6 kBtu/ft² |
| Source EUI | 89.2 kBtu/ft² |
| GHG emissions | 619 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 899,290 kWh |
| Natural gas | 61,190 therms |
| Water use | 5,074 kgal |
| Gross floor area | 168,367 sq ft |
| Source record | dc:PM4376808:2018 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2018latest | 72 | -3 | 54.6 kBtu/ft² | 619 tCO₂e |
| 2017 | 75 | +1 | 47.9 kBtu/ft² | 603 tCO₂e |
| 2016 | 74 | -9 | 52.3 kBtu/ft² | 658 tCO₂e |
| 2015 | 83 | +4 | 51.0 kBtu/ft² | 667 tCO₂e |
| 2014 | 79 | 48.9 kBtu/ft² | 680 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
NATIONAL SAVINGS & TRUST COMPANY TRUSTEES
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 4530 Connecticut Avenue, N.W.
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20008
- Coordinates
- 38.94899, -77.06701
Within ~1 km
Nearby benchmarked buildings
- UDC Van Ness Campusscore —
College/University · 973,377 sq ft
- 3400 International Drscore 97
K-12 School · 904,960 sq ft
- 3003 Van Ness - 29819score 97
Multifamily Housing · 776,610 sq ft
- V.N.N.C.Inc.score 94
Multifamily Housing · 695,661 sq ft
- Van Ness East Condominiumscore 100
Multifamily Housing · 453,583 sq ft
- The Brandywine Apartmentsscore 69
Multifamily Housing · 436,081 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does The Clarence House (cl242) 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. The Clarence House (cl242)'s ENERGY STAR score of 72 compares with an average of 72 across the 1,618 that report a score; it scores higher than 40% of them and lower than 59%. Its site EUI of 54.6 kBtu/ft² is roughly in line with the average of 51.1 kBtu/ft². Its emissions intensity of 3.7 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².
At 168,367 sq ft, it is about 23% above the average floor area of 136,346 sq ft for those buildings. Its 1964 construction date is close to 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 The Clarence House (cl242)'s energy performance changed over time?
BuildingCensus holds 5 Washington, DC disclosures for The Clarence House (cl242), covering report years 2014–2018. Its ENERGY STAR score went from 79 in 2014 to 72 in 2018 (-7 points); its best year on file was 2015, at 83. Site EUI moved from 48.9 kBtu/ft² (2014) to 54.6 kBtu/ft² (2018), an 12% increase. Reported emissions went from 680 tCO₂e to 619 tCO₂e over the same span (down 9%).
What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 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. The Clarence House (cl242)'s 54.6 kBtu/ft² across 168,367 sq ft works out to about 9.2 billion Btu (2,694 MWh-equivalent) in 2018. Its source EUI of 89.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 899,290 kWh of electricity, 61,190 therms of natural gas and 5,074 thousand gallons of water for the year.
Which law requires The Clarence House (cl242) to report its energy use?
The Clarence House (cl242) 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 2018 disclosure (source record dc:PM4376808:2018). 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 Valley Vista Condominium· 168,000 sq ft · score 97 (A)
- Boathouse· 166,910 sq ft
- 4200 Cathedral Avenue· 166,906 sq ft · score 98 (A)
- Capitol Hill Towers· 166,224 sq ft · score 26 (D)
- Greenleaf Family· 166,150 sq ft · score 46 (D)
- Crestview Condominiums· 165,105 sq ft · score 100 (A)
- 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 The Clarence House (cl242)'s energy grade?
The Clarence House (cl242) scores 72 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2018 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Clarence House (cl242) use?
Its 2018 site energy-use intensity was 54.6 kBtu/ft² (89.2 kBtu/ft² source) across 168,367 sq ft, including 899,290 kWh of electricity and 61,190 therms of natural gas.
What are The Clarence House (cl242)'s carbon emissions?
The Clarence House (cl242) reported 619 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2018.
Where is The Clarence House (cl242)?
The Clarence House (cl242) is at 4530 Connecticut Avenue, N.W., in Washington, DC 20008. Its coordinates are 38.94899, -77.06701 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is The Clarence House (cl242) and when was it built?
The Clarence House (cl242) has 168,367 sq ft of gross floor area, as reported in its 2018 disclosure. The disclosure lists 1964 as its year built. It is classed as multifamily housing.
Is The Clarence House (cl242) covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2018 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, “The Clarence House (cl242), Washington, DC — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/the-clarence-house-cl242-ef71a3c3 (data as of July 9, 2026).