The Frontenac
Multifamily Housing in Washington, DC, DC · 4550 Connecticut Ave NW · 20008
At a glance
The Frontenac is a 113,164-square-foot multifamily housing building at 4550 Connecticut Ave NW in Washington, DC, built in 1931. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 72.3 kBtu/ft² and 487 tCO₂e of greenhouse-gas emissions. That score is higher than 37% 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 | 70 (band B) |
| Site EUI | 72.3 kBtu/ft² |
| Source EUI | 99.3 kBtu/ft² |
| GHG emissions | 487 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 442,185 kWh |
| Natural gas | 66,750 therms |
| Water use | 3,045 kgal |
| Gross floor area | 113,164 sq ft |
| Source record | dc:PM14823292:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 70 | +1 | 72.3 kBtu/ft² | 487 tCO₂e |
| 2023 | 69 | -6 | 70.0 kBtu/ft² | 473 tCO₂e |
| 2022 | 75 | -8 | 71.0 kBtu/ft² | 481 tCO₂e |
| 2021 | 83 | -6 | 67.2 kBtu/ft² | 446 tCO₂e |
| 2020 | 89 | -11 | 59.0 kBtu/ft² | 418 tCO₂e |
| 2019 | 100 | +23 | 28.0 kBtu/ft² | 228 tCO₂e |
| 2018 | 77 | 76.4 kBtu/ft² | 525 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
ALONZO O BLISS PROPERTIES
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Location
- Address
- 4550 Connecticut Ave NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20008
- Coordinates
- 38.94942, -77.06710
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does The Frontenac 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 Frontenac's ENERGY STAR score of 70 compares with an average of 72 across the 1,618 that report a score; it scores higher than 37% of them and lower than 62%. Its site EUI of 72.3 kBtu/ft² is about 41% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.3 kgCO₂e/ft² is about 13% above the group average of 3.8 kgCO₂e/ft².
At 113,164 sq ft, it is about 17% below the average floor area of 136,346 sq ft for those buildings. It was built in 1931, 34 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 The Frontenac's energy performance changed over time?
BuildingCensus holds 7 Washington, DC disclosures for The Frontenac, covering report years 2018–2024. Its ENERGY STAR score went from 77 in 2018 to 70 in 2024 (-7 points); its best year on file was 2019, at 100. Site EUI moved from 76.4 kBtu/ft² (2018) to 72.3 kBtu/ft² (2024), a 5% decrease. Reported emissions went from 525 tCO₂e to 487 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 70 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 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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 Frontenac's 72.3 kBtu/ft² across 113,164 sq ft works out to about 8.2 billion Btu (2,398 MWh-equivalent) in 2024. Its source EUI of 99.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 442,185 kWh of electricity, 66,750 therms of natural gas and 3,045 thousand gallons of water for the year.
Which law requires The Frontenac to report its energy use?
The Frontenac 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:PM14823292:2024). 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 multifamily housing buildings in Washington, DC
- The Atlas Condominium· 112,894 sq ft · score 96 (A)
- Golden Rule Plaza· 112,378 sq ft · score 66 (C)
- Quincy Park Condominium· 112,050 sq ft · score 47 (D)
- 1330 7th Street: 1330 7th Street· 111,846 sq ft · score 42 (D)
- 1150 K Street Condominiums· 111,618 sq ft · score 91 (A)
- The Aspen (sp144)· 111,401 sq ft · score 99 (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 Frontenac's energy grade?
The Frontenac scores 70 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Frontenac use?
Its 2024 site energy-use intensity was 72.3 kBtu/ft² (99.3 kBtu/ft² source) across 113,164 sq ft, including 442,185 kWh of electricity and 66,750 therms of natural gas.
What are The Frontenac's carbon emissions?
The Frontenac reported 487 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is The Frontenac?
The Frontenac is at 4550 Connecticut Ave NW, in Washington, DC 20008. Its coordinates are 38.94942, -77.06710 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is The Frontenac and when was it built?
The Frontenac has 113,164 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1931 as its year built. It is classed as multifamily housing.
Is The Frontenac 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, “The Frontenac, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/the-frontenac-f7b01c80 (data as of July 9, 2026).