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1401 K St NW - OPI

Office in Washington, DC, DC · 1401 K St NW · 20005

At a glance

1401 K St NW - OPI is a 132,902-square-foot office building in Washington, DC, built in 1929. 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 35.7 kBtu/ft² and 381 tCO₂e of greenhouse-gas emissions. That score is higher than 77% of the 774 scored office buildings in Washington, DC.

ENERGY STAR score
85
band A · 2024
Site EUI
35.7
kBtu/ft²
GHG emissions
381
tCO₂e
GHG intensity
2.9
kgCO₂e/ft²
Floor area
132,902
sq ft
Year built
1929
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Clean and Affordable Energy Act / BEPS · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score85 (band A)
Site EUI35.7 kBtu/ft²
Source EUI86.3 kBtu/ft²
GHG emissions381 tCO₂e
GHG intensity2.9 kgCO₂e/ft²
Electricity1,085,013 kWh
Natural gas10,483 therms
Water use948 kgal
Gross floor area132,902 sq ft
Source recorddc:PM3498438:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest85-435.7 kBtu/ft²381 tCO₂e
202389-228.7 kBtu/ft²325 tCO₂e
202291+130.3 kBtu/ft²335 tCO₂e
202190+431.1 kBtu/ft²343 tCO₂e
202086+1332.6 kBtu/ft²379 tCO₂e
201973-2752.4 kBtu/ft²615 tCO₂e
2018100+1219.5 kBtu/ft²197 tCO₂e
201788+544.8 kBtu/ft²611 tCO₂e
20168346.7 kBtu/ft²683 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.

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Ownership

FP 1401 K LLC

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Location

Address
1401 K St NW
State
District of Columbia
ZIP
20005
Coordinates
38.90292, -77.03231

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Washington, DC · biggest emitters

How does 1401 K St NW - OPI compare with other office buildings in Washington, DC?

The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. 1401 K St NW - OPI'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 35.7 kBtu/ft² is about 36% below 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 2.9 kgCO₂e/ft² is about 43% below the group average of 5.0 kgCO₂e/ft².

At 132,902 sq ft, it is about 39% below the average floor area of 216,135 sq ft for those buildings. It was built in 1929, 45 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 1401 K St NW - OPI's energy performance changed over time?

BuildingCensus holds 9 Washington, DC disclosures for 1401 K St NW - OPI, covering report years 2016–2024. Its ENERGY STAR score went from 83 in 2016 to 85 in 2024 (+2 points); its best year on file was 2018, at 100. Site EUI moved from 46.7 kBtu/ft² (2016) to 35.7 kBtu/ft² (2024), a 24% decrease. Reported emissions went from 683 tCO₂e to 381 tCO₂e over the same span (down 44%).

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. 1401 K St NW - OPI's 35.7 kBtu/ft² across 132,902 sq ft works out to about 4.7 billion Btu (1,391 MWh-equivalent) in 2024. Its source EUI of 86.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,085,013 kWh of electricity, 10,483 therms of natural gas and 948 thousand gallons of water for the year.

Which law requires 1401 K St NW - OPI to report its energy use?

1401 K St NW - OPI 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:PM3498438:2024). 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

Frequently asked questions

What is 1401 K St NW - OPI's energy grade?

1401 K St NW - OPI 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 1401 K St NW - OPI use?

Its 2024 site energy-use intensity was 35.7 kBtu/ft² (86.3 kBtu/ft² source) across 132,902 sq ft, including 1,085,013 kWh of electricity and 10,483 therms of natural gas.

What are 1401 K St NW - OPI's carbon emissions?

1401 K St NW - OPI reported 381 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2024.

Where is 1401 K St NW - OPI?

1401 K St NW - OPI is in Washington, DC 20005. Its coordinates are 38.90292, -77.03231 (latitude, longitude), as published in the Building Energy Benchmarking file.

How big is 1401 K St NW - OPI and when was it built?

1401 K St NW - OPI has 132,902 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1929 as its year built. It is classed as office.

Is 1401 K St NW - OPI 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, “1401 K St NW - OPI, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/1401-k-st-nw-opi-abce2246 (data as of July 9, 2026).