1900 L Street: 1900 L Street Northwest
Office in Washington, DC, DC · 1900 L Street Northwest · 20036
At a glance
1900 L Street: 1900 L Street Northwest is a 122,148-square-foot office building in Washington, DC, built in 2019. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 50.6 kBtu/ft² and 474 tCO₂e of greenhouse-gas emissions. That score is higher than 66% 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 | 81 (band B) |
| Site EUI | 50.6 kBtu/ft² |
| Source EUI | 113.3 kBtu/ft² |
| GHG emissions | 474 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 1,231,675 kWh |
| Natural gas | 19,746 therms |
| Water use | 1,735 kgal |
| Gross floor area | 122,148 sq ft |
| Source record | dc:PM9961604:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 81 | -1 | 50.6 kBtu/ft² | 474 tCO₂e |
| 2023 | 82 | -3 | 49.1 kBtu/ft² | 431 tCO₂e |
| 2022 | 85 | +1 | 39.9 kBtu/ft² | 499 tCO₂e |
| 2021 | 84 | -16 | 41.0 kBtu/ft² | 536 tCO₂e |
| 2019 | 100 | 11.7 kBtu/ft² | 101 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
ZG 1900 L STREET LLC
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Location
- Address
- 1900 L Street Northwest
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20036
- Coordinates
- 38.90352, -77.04373
Within ~1 km
Nearby benchmarked buildings
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- Ross Hall Groupscore —
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- Columbia Plaza All Bldgsscore 30
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- Lafayette Centrescore 74
Office · 908,482 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1900 L Street: 1900 L 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. 1900 L Street: 1900 L Street Northwest's ENERGY STAR score of 81 compares with an average of 70 across the 774 that report a score; it scores higher than 66% of them and lower than 30%. Its site EUI of 50.6 kBtu/ft² is roughly in line with 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 22% below the group average of 5.0 kgCO₂e/ft².
At 122,148 sq ft, it is about 43% below the average floor area of 216,135 sq ft for those buildings. It was built in 2019, 45 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 1900 L Street: 1900 L Street Northwest's energy performance changed over time?
BuildingCensus holds 5 Washington, DC disclosures for 1900 L Street: 1900 L Street Northwest, covering report years 2019, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 100 in 2019 to 81 in 2024 (-19 points); its best year on file was 2019, at 100. Site EUI moved from 11.7 kBtu/ft² (2019) to 50.6 kBtu/ft² (2024), an 332% increase. Reported emissions went from 101 tCO₂e to 474 tCO₂e over the same span (up 370%).
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 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. 1900 L Street: 1900 L Street Northwest's 50.6 kBtu/ft² across 122,148 sq ft works out to about 6.2 billion Btu (1,811 MWh-equivalent) in 2024. Its source EUI of 113.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,231,675 kWh of electricity, 19,746 therms of natural gas and 1,735 thousand gallons of water for the year.
Which law requires 1900 L Street: 1900 L Street Northwest to report its energy use?
1900 L Street: 1900 L 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:PM9961604:2024). 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
- AIA Building· 121,470 sq ft · score 68 (C)
- NBL Associates· 120,838 sq ft · score 77 (B)
- 1120 19th Street, NW· 120,751 sq ft · score 63 (C)
- 2030 M St· 120,573 sq ft · score 56 (C)
- 1212 New York Avenue NW· 120,000 sq ft · EUI 40.9 kBtu/ft²
- 900 19th St· 119,748 sq ft · score 77 (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 1900 L Street: 1900 L Street Northwest's energy grade?
1900 L Street: 1900 L Street Northwest scores 81 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 1900 L Street: 1900 L Street Northwest use?
Its 2024 site energy-use intensity was 50.6 kBtu/ft² (113.3 kBtu/ft² source) across 122,148 sq ft, including 1,231,675 kWh of electricity and 19,746 therms of natural gas.
What are 1900 L Street: 1900 L Street Northwest's carbon emissions?
1900 L Street: 1900 L Street Northwest reported 474 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2024.
Where is 1900 L Street: 1900 L Street Northwest?
1900 L Street: 1900 L Street Northwest is in Washington, DC 20036. Its coordinates are 38.90352, -77.04373 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1900 L Street: 1900 L Street Northwest and when was it built?
1900 L Street: 1900 L Street Northwest has 122,148 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2019 as its year built. It is classed as office.
Is 1900 L Street: 1900 L 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, “1900 L Street: 1900 L Street Northwest, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1900-l-street-1900-l-street-northwest-900687b5 (data as of July 9, 2026).