Colonnade 4505 South Capitol
Multifamily Housing in Washington, DC, DC · 4505 S Capitol St SW · 20032
At a glance
Colonnade 4505 South Capitol is a 46,646-square-foot multifamily housing building at 4505 S Capitol St SW in Washington, DC, built in 1944. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 58 out of 100 (grade C), a site energy-use intensity of 53.7 kBtu/ft² and 161 tCO₂e of greenhouse-gas emissions. That score is higher than 25% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 53.7 kBtu/ft² |
| Source EUI | 86.1 kBtu/ft² |
| GHG emissions | 161 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 231,693 kWh |
| Natural gas | 17,161 therms |
| Water use | 1,479 kgal |
| Gross floor area | 46,646 sq ft |
| Source record | dc:PM19581499:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 58 | +18 | 53.7 kBtu/ft² | 161 tCO₂e |
| 2023 | 40 | +4 | 59.3 kBtu/ft² | 174 tCO₂e |
| 2022 | 36 | 68.3 kBtu/ft² | 200 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
WILLIAM C SMITH & CO INC
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Location
- Address
- 4505 S Capitol St SW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20032
- Coordinates
- 38.82427, -77.00647
Within ~1 km
Nearby benchmarked buildings
- The Vista at Wingatescore 65
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- Vista at Wingatescore 100
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- Gardens at Wingatescore 67
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- Worthington Woodsscore 96
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- South Capitol Aptsscore 94
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See also: most efficient in Washington, DC · biggest emitters
How does Colonnade 4505 South Capitol 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. Colonnade 4505 South Capitol's ENERGY STAR score of 58 compares with an average of 72 across the 1,618 that report a score; it scores higher than 25% of them and lower than 74%. Its site EUI of 53.7 kBtu/ft² is roughly in line with the average of 51.1 kBtu/ft². Its emissions intensity of 3.4 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².
At 46,646 sq ft, it is about 66% below the average floor area of 136,346 sq ft for those buildings. It was built in 1944, 21 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 Colonnade 4505 South Capitol's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for Colonnade 4505 South Capitol, covering report years 2022–2024. Its ENERGY STAR score went from 36 in 2022 to 58 in 2024 (+22 points). Site EUI moved from 68.3 kBtu/ft² (2022) to 53.7 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 200 tCO₂e to 161 tCO₂e over the same span (down 20%).
What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 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. Colonnade 4505 South Capitol's 53.7 kBtu/ft² across 46,646 sq ft works out to about 2.5 billion Btu (734 MWh-equivalent) in 2024. Its source EUI of 86.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 231,693 kWh of electricity, 17,161 therms of natural gas and 1,479 thousand gallons of water for the year.
Which law requires Colonnade 4505 South Capitol to report its energy use?
Colonnade 4505 South Capitol 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:PM19581499:2024). 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.
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- Multifamily Housing buildings in Washington, DC· 1,799 benchmarked
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Frequently asked questions
What is Colonnade 4505 South Capitol's energy grade?
Colonnade 4505 South Capitol scores 58 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 Colonnade 4505 South Capitol use?
Its 2024 site energy-use intensity was 53.7 kBtu/ft² (86.1 kBtu/ft² source) across 46,646 sq ft, including 231,693 kWh of electricity and 17,161 therms of natural gas.
What are Colonnade 4505 South Capitol's carbon emissions?
Colonnade 4505 South Capitol reported 161 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is Colonnade 4505 South Capitol?
Colonnade 4505 South Capitol is at 4505 S Capitol St SW, in Washington, DC 20032. Its coordinates are 38.82427, -77.00647 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Colonnade 4505 South Capitol and when was it built?
Colonnade 4505 South Capitol has 46,646 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1944 as its year built. It is classed as multifamily housing.
Is Colonnade 4505 South Capitol 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, “Colonnade 4505 South Capitol, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/colonnade-4505-south-capitol-333d95af (data as of July 9, 2026).