1634 I Street: 1634 I Street Northwest
Office in Washington, DC, DC · 1634 I Street Northwest · 20006
At a glance
1634 I Street: 1634 I Street Northwest is a 71,466-square-foot office building in Washington, DC, built in 1961. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B), a site energy-use intensity of 59.3 kBtu/ft² and 300 tCO₂e of greenhouse-gas emissions. That score is higher than 50% 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 | 76 (band B) |
| Site EUI | 59.3 kBtu/ft² |
| Source EUI | 130.9 kBtu/ft² |
| GHG emissions | 300 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 821,549 kWh |
| Natural gas | 14,364 therms |
| Water use | 1,686 kgal |
| Gross floor area | 71,466 sq ft |
| Source record | dc:PM9961603:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 76 | +4 | 59.3 kBtu/ft² | 300 tCO₂e |
| 2023 | 72 | -8 | 59.7 kBtu/ft² | 309 tCO₂e |
| 2022 | 80 | +4 | 56.5 kBtu/ft² | 304 tCO₂e |
| 2021 | 76 | +1 | 58.1 kBtu/ft² | 331 tCO₂e |
| 2020 | 75 | -1 | 56.8 kBtu/ft² | 316 tCO₂e |
| 2019 | 76 | +49 | 57.1 kBtu/ft² | 350 tCO₂e |
| 2018 | 27 | 103.9 kBtu/ft² | 658 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
1634 EYE LLC
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Location
- Address
- 1634 I Street Northwest
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20006
- Coordinates
- 38.90112, -77.03899
Within ~1 km
Nearby benchmarked buildings
- Main Complexscore 59
Office · 1,872,507 sq ft
- International Squarescore 56
Office · 1,233,833 sq ft
- Midtown Centerscore 91
Office · 911,093 sq ft
- Lafayette Centrescore 74
Office · 908,482 sq ft
- NGS Headquartersscore 68
Office · 746,237 sq ft
- Northwestern Buildingscore 90
Office · 732,964 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1634 I Street: 1634 I Street Northwest compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1634 I Street: 1634 I Street Northwest's ENERGY STAR score of 76 compares with an average of 70 across the 774 that report a score; it scores higher than 50% of them and lower than 47%. Its site EUI of 59.3 kBtu/ft² is roughly in line with the average of 55.6 kBtu/ft². Its emissions intensity of 4.2 kgCO₂e/ft² is about 16% below the group average of 5.0 kgCO₂e/ft².
At 71,466 sq ft, it is about 67% below the average floor area of 216,135 sq ft for those buildings. It was built in 1961, 13 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 1634 I Street: 1634 I Street Northwest's energy performance changed over time?
BuildingCensus holds 7 Washington, DC disclosures for 1634 I Street: 1634 I Street Northwest, covering report years 2018–2024. Its ENERGY STAR score went from 27 in 2018 to 76 in 2024 (+49 points); its best year on file was 2022, at 80. Site EUI moved from 103.9 kBtu/ft² (2018) to 59.3 kBtu/ft² (2024), a 43% decrease. Reported emissions went from 658 tCO₂e to 300 tCO₂e over the same span (down 54%).
What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 falls in band B — above median (70–84). 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. 1634 I Street: 1634 I Street Northwest's 59.3 kBtu/ft² across 71,466 sq ft works out to about 4.2 billion Btu (1,242 MWh-equivalent) in 2024. Its source EUI of 130.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 821,549 kWh of electricity, 14,364 therms of natural gas and 1,686 thousand gallons of water for the year.
Which law requires 1634 I Street: 1634 I Street Northwest to report its energy use?
1634 I Street: 1634 I Street Northwest 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:PM9961603:2024). 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
- 2000 Florida Avenue, NW· 71,380 sq ft · score 71 (B)
- 1126 16th Street NW· 70,975 sq ft · score 74 (B)
- American Dental Association· 69,974 sq ft · score 38 (D)
- Progressive National Baptist Convention· 69,928 sq ft
- 4201 Connecticut Avenue· 69,609 sq ft · score 65 (C)
- 1634 I St: 1634 I Street Northwest· 69,230 sq ft · score 79 (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 1634 I Street: 1634 I Street Northwest's energy grade?
1634 I Street: 1634 I Street Northwest scores 76 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 1634 I Street: 1634 I Street Northwest use?
Its 2024 site energy-use intensity was 59.3 kBtu/ft² (130.9 kBtu/ft² source) across 71,466 sq ft, including 821,549 kWh of electricity and 14,364 therms of natural gas.
What are 1634 I Street: 1634 I Street Northwest's carbon emissions?
1634 I Street: 1634 I Street Northwest reported 300 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is 1634 I Street: 1634 I Street Northwest?
1634 I Street: 1634 I Street Northwest is in Washington, DC 20006. Its coordinates are 38.90112, -77.03899 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1634 I Street: 1634 I Street Northwest and when was it built?
1634 I Street: 1634 I Street Northwest has 71,466 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1961 as its year built. It is classed as office.
Is 1634 I Street: 1634 I Street Northwest 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, “1634 I Street: 1634 I Street Northwest, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1634-i-street-1634-i-street-northwest-a88c0b5b (data as of July 9, 2026).