1300 Connecticut Avenue NW
Office in Washington, DC, DC · 20036
At a glance
1300 Connecticut Avenue NW is a 134,864-square-foot office building in Washington, DC, built in 1956. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 43.9 kBtu/ft² and 519 tCO₂e of greenhouse-gas emissions. That score is higher than 27% of the 774 scored office buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 43.9 kBtu/ft² |
| Source EUI | 122.8 kBtu/ft² |
| GHG emissions | 519 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 1,734,083 kWh |
| Natural gas | 0 therms |
| Water use | 1,557 kgal |
| Gross floor area | 134,864 sq ft |
| Source record | dc:PM1056237:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 64 | 43.9 kBtu/ft² | 519 tCO₂e | |
| 2023 | — | 33.3 kBtu/ft² | 403 tCO₂e | |
| 2022 | 78 | -3 | 35.6 kBtu/ft² | 418 tCO₂e |
| 2021 | 81 | -7 | 36.5 kBtu/ft² | 457 tCO₂e |
| 2020 | 88 | +14 | 31.0 kBtu/ft² | 401 tCO₂e |
| 2019 | 74 | +4 | 47.8 kBtu/ft² | 616 tCO₂e |
| 2018 | 70 | -7 | 51.8 kBtu/ft² | 668 tCO₂e |
| 2017 | 77 | +17 | 56.2 kBtu/ft² | 841 tCO₂e |
| 2016 | 60 | ±0 | 71.5 kBtu/ft² | 1,106 tCO₂e |
| 2015 | 60 | 71.2 kBtu/ft² | 1,285 tCO₂e | |
| 2014 | — | 85.5 kBtu/ft² | 1,419 tCO₂e | |
| 2013 | 62 | 69.5 kBtu/ft² | 1,220 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
TRT 1300 CONNECTICUT AVE OWNER LLC
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Location
- Address
- 1300 Connecticut Avenue NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20036
- Coordinates
- 38.90753, -77.04270
Within ~1 km
Nearby benchmarked buildings
- International Squarescore 56
Office · 1,233,833 sq ft
- Ross Hall Groupscore —
College/University · 1,047,627 sq ft
- Midtown Centerscore 91
Office · 911,093 sq ft
- Lafayette Centrescore 74
Office · 908,482 sq ft
Mixed Use Property · 844,878 sq ft
- NGS Headquartersscore 68
Office · 746,237 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1300 Connecticut Avenue NW compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1300 Connecticut Avenue NW's ENERGY STAR score of 64 compares with an average of 70 across the 774 that report a score; it scores higher than 27% of them and lower than 72%. Its site EUI of 43.9 kBtu/ft² is about 21% below the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.9 kgCO₂e/ft² is about 23% below the group average of 5.0 kgCO₂e/ft².
At 134,864 sq ft, it is about 38% below the average floor area of 216,135 sq ft for those buildings. It was built in 1956, 18 years earlier than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 1300 Connecticut Avenue NW's energy performance changed over time?
BuildingCensus holds 12 Washington, DC disclosures for 1300 Connecticut Avenue NW, covering report years 2013–2024. Its ENERGY STAR score went from 62 in 2013 to 64 in 2024 (+2 points); its best year on file was 2020, at 88. Site EUI moved from 69.5 kBtu/ft² (2013) to 43.9 kBtu/ft² (2024), a 37% decrease. Reported emissions went from 1,220 tCO₂e to 519 tCO₂e over the same span (down 57%).
What does an ENERGY STAR score of 64 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 64 means the building performs better than about 64% of its national peers. BuildingCensus bands the score into report-card grades; 64 falls in band C — below median (55–69). It sits 11 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. 1300 Connecticut Avenue NW's 43.9 kBtu/ft² across 134,864 sq ft works out to about 5.9 billion Btu (1,735 MWh-equivalent) in 2024. Its source EUI of 122.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,734,083 kWh of electricity, 0 therms of natural gas and 1,557 thousand gallons of water for the year.
Which law requires 1300 Connecticut Avenue NW to report its energy use?
1300 Connecticut Avenue NW 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:PM1056237:2024). 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 office buildings in Washington, DC
- 500 First Street NW· 134,435 sq ft · score 60 (C)
- 2033 K Street, NW· 134,212 sq ft · EUI 54.2 kBtu/ft²
- 1700 New York Avenue· 134,210 sq ft · score 87 (A)
- AFGE· 133,000 sq ft · score 75 (B)
- american federation of government employee· 133,000 sq ft · score 79 (B)
- 1920 N St, NW· 132,946 sq ft · score 80 (B)
- Office buildings in Washington, DC· 899 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 1300 Connecticut Avenue NW's energy grade?
1300 Connecticut Avenue NW scores 64 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 1300 Connecticut Avenue NW use?
Its 2024 site energy-use intensity was 43.9 kBtu/ft² (122.8 kBtu/ft² source) across 134,864 sq ft, including 1,734,083 kWh of electricity and 0 therms of natural gas.
What are 1300 Connecticut Avenue NW's carbon emissions?
1300 Connecticut Avenue NW reported 519 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2024.
Where is 1300 Connecticut Avenue NW?
1300 Connecticut Avenue NW is in Washington, DC 20036. Its coordinates are 38.90753, -77.04270 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1300 Connecticut Avenue NW and when was it built?
1300 Connecticut Avenue NW has 134,864 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1956 as its year built. It is classed as office.
Is 1300 Connecticut Avenue NW 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, “1300 Connecticut Avenue NW, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1300-connecticut-avenue-nw-e11ab655 (data as of July 9, 2026).