The Cortland Apartments
Multifamily Housing in Washington, DC, DC · 1756 Euclid St NW · 20009
At a glance
The Cortland Apartments is a 66,417-square-foot multifamily housing building at 1756 Euclid St NW in Washington, DC, built in 1915. In its 2017 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 49 out of 100 (grade D), a site energy-use intensity of 69.7 kBtu/ft² and 341 tCO₂e of greenhouse-gas emissions. That score is higher than 18% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2017
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 49 (band D) |
| Site EUI | 69.7 kBtu/ft² |
| Source EUI | 124.9 kBtu/ft² |
| GHG emissions | 341 tCO₂e |
| GHG intensity | 5.1 kgCO₂e/ft² |
| Electricity | 481,650 kWh |
| Natural gas | 29,837 therms |
| Water use | 1,289 kgal |
| Gross floor area | 66,417 sq ft |
| Source record | dc:PM3998588:2017 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2017latest | 49 | -6 | 69.7 kBtu/ft² | 341 tCO₂e |
| 2016 | 55 | 61.0 kBtu/ft² | 317 tCO₂e | |
| 2014 | — | 52.7 kBtu/ft² | 202 tCO₂e | |
| 2013 | — | 58.9 kBtu/ft² | 258 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
ALONZO O BLISS PROPERTIES
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Location
- Address
- 1756 Euclid St NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20009
- Coordinates
- 38.92290, -77.04094
Within ~1 km
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How does The Cortland Apartments compare with other multifamily housing buildings in Washington, DC?
The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. The Cortland Apartments's ENERGY STAR score of 49 compares with an average of 72 across the 1,618 that report a score; it scores higher than 18% of them and lower than 82%. Its site EUI of 69.7 kBtu/ft² is about 36% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.1 kgCO₂e/ft² is about 34% above the group average of 3.8 kgCO₂e/ft².
At 66,417 sq ft, it is about half of the average floor area of 136,346 sq ft for those buildings. It was built in 1915, 50 years earlier than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has The Cortland Apartments's energy performance changed over time?
BuildingCensus holds 4 Washington, DC disclosures for The Cortland Apartments, covering report years 2013, 2014, 2016, 2017. Its ENERGY STAR score went from 55 in 2016 to 49 in 2017 (-6 points); its best year on file was 2016, at 55. Site EUI moved from 58.9 kBtu/ft² (2013) to 69.7 kBtu/ft² (2017), an 18% increase. Reported emissions went from 258 tCO₂e to 341 tCO₂e over the same span (up 32%).
What does an ENERGY STAR score of 49 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 49 means the building performs better than about 49% of its national peers. BuildingCensus bands the score into report-card grades; 49 falls in band D — lowest band (1–54). It sits 26 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. The Cortland Apartments's 69.7 kBtu/ft² across 66,417 sq ft works out to about 4.6 billion Btu (1,357 MWh-equivalent) in 2017. Its source EUI of 124.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 481,650 kWh of electricity, 29,837 therms of natural gas and 1,289 thousand gallons of water for the year.
Which law requires The Cortland Apartments to report its energy use?
The Cortland Apartments 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 2017 disclosure (source record dc:PM3998588:2017). 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 multifamily housing buildings in Washington, DC
- Longfellow Apartments· 66,288 sq ft · score 69 (C)
- Longfellow Apartments· 66,218 sq ft · score 79 (B)
- 2100 Connecticut Ave· 65,964 sq ft · score 43 (D)
- Hillwood Condominium Association· 65,758 sq ft
- The Conwell (was Adams View) (co587)· 65,684 sq ft · score 99 (A)
- The Phoenix· 65,665 sq ft · score 97 (A)
- Multifamily Housing buildings in Washington, DC· 1,799 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
- Most efficient large buildings in Washington, DC
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Frequently asked questions
What is The Cortland Apartments's energy grade?
The Cortland Apartments scores 49 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2017 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Cortland Apartments use?
Its 2017 site energy-use intensity was 69.7 kBtu/ft² (124.9 kBtu/ft² source) across 66,417 sq ft, including 481,650 kWh of electricity and 29,837 therms of natural gas.
What are The Cortland Apartments's carbon emissions?
The Cortland Apartments reported 341 tCO₂e of greenhouse-gas emissions (5.1 kgCO₂e/ft²) for 2017.
Where is The Cortland Apartments?
The Cortland Apartments is at 1756 Euclid St NW, in Washington, DC 20009. Its coordinates are 38.92290, -77.04094 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is The Cortland Apartments and when was it built?
The Cortland Apartments has 66,417 sq ft of gross floor area, as reported in its 2017 disclosure. The disclosure lists 1915 as its year built. It is classed as multifamily housing.
Is The Cortland Apartments covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2017 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, “The Cortland Apartments, Washington, DC — 2017 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/the-cortland-apartments-fa3e1c09 (data as of July 9, 2026).