1620 L ST, N.W. Wash DC
Office in Washington, DC, DC · 1620 L ST, N.W. · 20036
At a glance
1620 L ST, N.W. Wash DC is a 167,887-square-foot office building in Washington, DC, built in 1989. In its 2016 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 63.9 kBtu/ft² and 1,231 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 2016
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 63.9 kBtu/ft² |
| Source EUI | 200.7 kBtu/ft² |
| GHG emissions | 1,231 tCO₂e |
| GHG intensity | 7.3 kgCO₂e/ft² |
| Electricity | 3,145,666 kWh |
| Natural gas | 0 therms |
| Water use | 15,759 kgal |
| Gross floor area | 167,887 sq ft |
| Source record | dc:PM1961354:2016 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2016latest | 64 | 63.9 kBtu/ft² | 1,231 tCO₂e | |
| 2015 | — | 52.0 kBtu/ft² | 1,187 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
I &G 1620 L STREET NW LLC
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Location
- Address
- 1620 L ST, N.W.
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20036
- Coordinates
- 38.90341, -77.03759
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
- 1300 Buildingscore 95
Bank/Financial Institution · 803,167 sq ft
- NGS Headquartersscore 68
Office · 746,237 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does 1620 L ST, N.W. Wash DC compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1620 L ST, N.W. Wash DC'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 63.9 kBtu/ft² is about 15% 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 7.3 kgCO₂e/ft² is about 46% above the group average of 5.0 kgCO₂e/ft².
At 167,887 sq ft, it is about 22% below the average floor area of 216,135 sq ft for those buildings. It was built in 1989, 15 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 1620 L ST, N.W. Wash DC's energy performance changed over time?
BuildingCensus holds 2 Washington, DC disclosures for 1620 L ST, N.W. Wash DC, covering report years 2015–2016. Site EUI moved from 52.0 kBtu/ft² (2015) to 63.9 kBtu/ft² (2016), an 23% increase. Reported emissions went from 1,187 tCO₂e to 1,231 tCO₂e over the same span (up 4%).
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. 1620 L ST, N.W. Wash DC's 63.9 kBtu/ft² across 167,887 sq ft works out to about 10.7 billion Btu (3,144 MWh-equivalent) in 2016. Its source EUI of 200.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,145,666 kWh of electricity, 0 therms of natural gas and 15,759 thousand gallons of water for the year.
Which law requires 1620 L ST, N.W. Wash DC to report its energy use?
1620 L ST, N.W. Wash DC 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 2016 disclosure (source record dc:PM1961354:2016). 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
- 1001 Connecticut Ave NW: 1001 Connecticut Avenue Northwest· 166,407 sq ft · score 93 (A)
- Harbourside· 165,491 sq ft · EUI 37.4 kBtu/ft²
- Eleven Hundred Connecticut Avenue· 163,512 sq ft · score 76 (B)
- 1090 Vermont Avenue NW· 163,045 sq ft · score 81 (B)
- 455 Mass. Avenue· 162,341 sq ft
- 1899 L Street· 161,839 sq ft · score 71 (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 1620 L ST, N.W. Wash DC's energy grade?
1620 L ST, N.W. Wash DC scores 64 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2016 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1620 L ST, N.W. Wash DC use?
Its 2016 site energy-use intensity was 63.9 kBtu/ft² (200.7 kBtu/ft² source) across 167,887 sq ft, including 3,145,666 kWh of electricity and 0 therms of natural gas.
What are 1620 L ST, N.W. Wash DC's carbon emissions?
1620 L ST, N.W. Wash DC reported 1,231 tCO₂e of greenhouse-gas emissions (7.3 kgCO₂e/ft²) for 2016.
Where is 1620 L ST, N.W. Wash DC?
1620 L ST, N.W. Wash DC is in Washington, DC 20036. Its coordinates are 38.90341, -77.03759 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1620 L ST, N.W. Wash DC and when was it built?
1620 L ST, N.W. Wash DC has 167,887 sq ft of gross floor area, as reported in its 2016 disclosure. The disclosure lists 1989 as its year built. It is classed as office.
Is 1620 L ST, N.W. Wash DC covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2016 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, “1620 L ST, N.W. Wash DC, Washington, DC — 2016 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1620-l-st-n-w-wash-dc-7712d8cd (data as of July 9, 2026).