1828 L Street Associates
Office in Washington, DC, DC · 1828 L Street, NW · 20036
At a glance
1828 L Street Associates is a 339,039-square-foot office building at 1828 L Street, NW in Washington, DC, built in 1969. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 85 out of 100 (grade A), a site energy-use intensity of 72.2 kBtu/ft² and 2,038 tCO₂e of greenhouse-gas emissions. That score is higher than 77% 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 | 85 (band A) |
| Site EUI | 72.2 kBtu/ft² |
| Source EUI | 185.7 kBtu/ft² |
| GHG emissions | 2,038 tCO₂e |
| GHG intensity | 6.0 kgCO₂e/ft² |
| Electricity | 6,235,423 kWh |
| Natural gas | 32,158 therms |
| Water use | 5,601 kgal |
| Gross floor area | 339,039 sq ft |
| Source record | dc:PM1431261:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 85 | -2 | 72.2 kBtu/ft² | 2,038 tCO₂e |
| 2023 | 87 | +2 | 68.2 kBtu/ft² | 1,997 tCO₂e |
| 2022 | 85 | ±0 | 69.3 kBtu/ft² | 1,943 tCO₂e |
| 2021 | 85 | -3 | 69.3 kBtu/ft² | 2,059 tCO₂e |
| 2020 | 88 | +6 | 67.2 kBtu/ft² | 2,091 tCO₂e |
| 2019 | 82 | +2 | 82.9 kBtu/ft² | 2,562 tCO₂e |
| 2018 | 80 | -8 | 89.0 kBtu/ft² | 2,708 tCO₂e |
| 2017 | 88 | +2 | 91.8 kBtu/ft² | 3,178 tCO₂e |
| 2016 | 86 | +1 | 96.9 kBtu/ft² | 3,468 tCO₂e |
| 2015 | 85 | ±0 | 100.2 kBtu/ft² | 4,076 tCO₂e |
| 2014 | 85 | 73.2 kBtu/ft² | 2,740 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
1828 L STREET ASSOCIATES LLC
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Location
- Address
- 1828 L Street, NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20036
- Coordinates
- 38.90341, -77.04310
Within ~1 km
Nearby benchmarked buildings
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- Columbia Plaza All Bldgsscore 30
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See also: most efficient in Washington, DC · biggest emitters
How does 1828 L Street Associates compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1828 L Street Associates's ENERGY STAR score of 85 compares with an average of 70 across the 774 that report a score; it scores higher than 77% of them and lower than 19%. Its site EUI of 72.2 kBtu/ft² is about 30% 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 6.0 kgCO₂e/ft² is about 20% above the group average of 5.0 kgCO₂e/ft².
At 339,039 sq ft, it is about 57% above the average floor area of 216,135 sq ft for those buildings. It was built in 1969, 5 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 1828 L Street Associates's energy performance changed over time?
BuildingCensus holds 11 Washington, DC disclosures for 1828 L Street Associates, covering report years 2014–2024. Its ENERGY STAR score was 85 in both 2014 and 2024. Site EUI moved from 73.2 kBtu/ft² (2014) to 72.2 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 2,740 tCO₂e to 2,038 tCO₂e over the same span (down 26%).
What does an ENERGY STAR score of 85 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 85 means the building performs better than about 85% of its national peers. BuildingCensus bands the score into report-card grades; 85 falls in band A — high performer (85–100). 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. 1828 L Street Associates's 72.2 kBtu/ft² across 339,039 sq ft works out to about 24.5 billion Btu (7,174 MWh-equivalent) in 2024. Its source EUI of 185.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,235,423 kWh of electricity, 32,158 therms of natural gas and 5,601 thousand gallons of water for the year.
Which law requires 1828 L Street Associates to report its energy use?
1828 L Street Associates 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:PM1431261:2024). 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
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- 801 Eye Street· 335,909 sq ft · score 77 (B)
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- Office buildings in Washington, DC· 899 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
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Frequently asked questions
What is 1828 L Street Associates's energy grade?
1828 L Street Associates scores 85 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1828 L Street Associates use?
Its 2024 site energy-use intensity was 72.2 kBtu/ft² (185.7 kBtu/ft² source) across 339,039 sq ft, including 6,235,423 kWh of electricity and 32,158 therms of natural gas.
What are 1828 L Street Associates's carbon emissions?
1828 L Street Associates reported 2,038 tCO₂e of greenhouse-gas emissions (6.0 kgCO₂e/ft²) for 2024.
Where is 1828 L Street Associates?
1828 L Street Associates is at 1828 L Street, NW, in Washington, DC 20036. Its coordinates are 38.90341, -77.04310 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1828 L Street Associates and when was it built?
1828 L Street Associates has 339,039 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1969 as its year built. It is classed as office.
Is 1828 L Street Associates 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, “1828 L Street Associates, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1828-l-street-associates-ee373e4e (data as of July 9, 2026).