1400 Eye Street NW: 1400 I Street Northwest
Office in Washington, DC, DC · 1400 I Street Northwest · 20005
At a glance
1400 Eye Street NW: 1400 I Street Northwest is a 175,759-square-foot office building in Washington, DC, built in 1982. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 66 out of 100 (grade C), a site energy-use intensity of 62.8 kBtu/ft² and 934 tCO₂e of greenhouse-gas emissions. That score is higher than 29% 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 | 66 (band C) |
| Site EUI | 62.8 kBtu/ft² |
| Source EUI | 165.9 kBtu/ft² |
| GHG emissions | 934 tCO₂e |
| GHG intensity | 5.3 kgCO₂e/ft² |
| Electricity | 2,943,483 kWh |
| Natural gas | 9,958 therms |
| Water use | 3,459 kgal |
| Gross floor area | 175,759 sq ft |
| Source record | dc:PM6182217:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 66 | -3 | 62.8 kBtu/ft² | 934 tCO₂e |
| 2023 | 69 | -7 | 58.6 kBtu/ft² | 799 tCO₂e |
| 2022 | 76 | -5 | 47.5 kBtu/ft² | 893 tCO₂e |
| 2021 | 81 | +10 | 43.3 kBtu/ft² | 863 tCO₂e |
| 2020 | 71 | +5 | 50.6 kBtu/ft² | 847 tCO₂e |
| 2019 | 66 | 52.3 kBtu/ft² | — |
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
ZG 1400 EYE, LLC
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Location
- Address
- 1400 I Street Northwest
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20005
- Coordinates
- 38.90102, -77.03228
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does 1400 Eye Street NW: 1400 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. 1400 Eye Street NW: 1400 I Street Northwest's ENERGY STAR score of 66 compares with an average of 70 across the 774 that report a score; it scores higher than 29% of them and lower than 69%. Its site EUI of 62.8 kBtu/ft² is about 13% above the average of 55.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.3 kgCO₂e/ft² is roughly in line with the group average of 5.0 kgCO₂e/ft².
At 175,759 sq ft, it is about 19% below the average floor area of 216,135 sq ft for those buildings. It was built in 1982, 8 years later 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 1400 Eye Street NW: 1400 I Street Northwest's energy performance changed over time?
BuildingCensus holds 6 Washington, DC disclosures for 1400 Eye Street NW: 1400 I Street Northwest, covering report years 2019–2024. Its ENERGY STAR score was 66 in both 2019 and 2024. Site EUI moved from 52.3 kBtu/ft² (2019) to 62.8 kBtu/ft² (2024), an 20% increase. Reported emissions went from 847 tCO₂e to 934 tCO₂e over the same span (up 10%).
What does an ENERGY STAR score of 66 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 66 means the building performs better than about 66% of its national peers. BuildingCensus bands the score into report-card grades; 66 falls in band C — below median (55–69). It sits 9 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. 1400 Eye Street NW: 1400 I Street Northwest's 62.8 kBtu/ft² across 175,759 sq ft works out to about 11 billion Btu (3,235 MWh-equivalent) in 2024. Its source EUI of 165.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,943,483 kWh of electricity, 9,958 therms of natural gas and 3,459 thousand gallons of water for the year.
Which law requires 1400 Eye Street NW: 1400 I Street Northwest to report its energy use?
1400 Eye Street NW: 1400 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:PM6182217:2024). 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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Frequently asked questions
What is 1400 Eye Street NW: 1400 I Street Northwest's energy grade?
1400 Eye Street NW: 1400 I Street Northwest scores 66 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 1400 Eye Street NW: 1400 I Street Northwest use?
Its 2024 site energy-use intensity was 62.8 kBtu/ft² (165.9 kBtu/ft² source) across 175,759 sq ft, including 2,943,483 kWh of electricity and 9,958 therms of natural gas.
What are 1400 Eye Street NW: 1400 I Street Northwest's carbon emissions?
1400 Eye Street NW: 1400 I Street Northwest reported 934 tCO₂e of greenhouse-gas emissions (5.3 kgCO₂e/ft²) for 2024.
Where is 1400 Eye Street NW: 1400 I Street Northwest?
1400 Eye Street NW: 1400 I Street Northwest is in Washington, DC 20005. Its coordinates are 38.90102, -77.03228 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1400 Eye Street NW: 1400 I Street Northwest and when was it built?
1400 Eye Street NW: 1400 I Street Northwest has 175,759 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1982 as its year built. It is classed as office.
Is 1400 Eye Street NW: 1400 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, “1400 Eye Street NW: 1400 I Street Northwest, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1400-eye-street-nw-1400-i-street-northwest-60c170ea (data as of July 9, 2026).