Twin Oaks Apartments
Multifamily Housing in Washington, DC, DC · 3800 14th St NW · 20011
At a glance
Twin Oaks Apartments is a 97,377-square-foot multifamily housing building at 3800 14th St NW in Washington, DC, built in 1920. In its 2017 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 30 out of 100 (grade D), a site energy-use intensity of 133.3 kBtu/ft² and 828 tCO₂e of greenhouse-gas emissions. That score is higher than 8% 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 | 30 (band D) |
| Site EUI | 133.3 kBtu/ft² |
| Source EUI | 191.6 kBtu/ft² |
| GHG emissions | 828 tCO₂e |
| GHG intensity | 8.5 kgCO₂e/ft² |
| Electricity | 704,787 kWh |
| Natural gas | 105,734 therms |
| Water use | 10,389 kgal |
| Gross floor area | 97,377 sq ft |
| Source record | dc:PM3996319:2017 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2017latest | 30 | +1 | 133.3 kBtu/ft² | 828 tCO₂e |
| 2016 | 29 | -7 | 140.2 kBtu/ft² | 878 tCO₂e |
| 2015 | 36 | +4 | 139.9 kBtu/ft² | 888 tCO₂e |
| 2014 | 32 | 134.3 kBtu/ft² | 896 tCO₂e | |
| 2013 | — | 75.5 kBtu/ft² | 480 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
TWIN OAKS LLC
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Location
- Address
- 3800 14th St NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20011
- Coordinates
- 38.93825, -77.03350
Within ~1 km
Nearby benchmarked buildings
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See also: most efficient in Washington, DC · biggest emitters
How does Twin Oaks 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. Twin Oaks Apartments's ENERGY STAR score of 30 compares with an average of 72 across the 1,618 that report a score; it scores higher than 8% of them and lower than 92%. Its site EUI of 133.3 kBtu/ft² is about 161% 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 8.5 kgCO₂e/ft² is about 124% above the group average of 3.8 kgCO₂e/ft².
At 97,377 sq ft, it is about 29% below the average floor area of 136,346 sq ft for those buildings. It was built in 1920, 45 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 Twin Oaks Apartments's energy performance changed over time?
BuildingCensus holds 5 Washington, DC disclosures for Twin Oaks Apartments, covering report years 2013–2017. Its ENERGY STAR score went from 32 in 2014 to 30 in 2017 (-2 points); its best year on file was 2015, at 36. Site EUI moved from 75.5 kBtu/ft² (2013) to 133.3 kBtu/ft² (2017), an 77% increase. Reported emissions went from 480 tCO₂e to 828 tCO₂e over the same span (up 73%).
What does an ENERGY STAR score of 30 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 30 means the building performs better than about 30% of its national peers. BuildingCensus bands the score into report-card grades; 30 falls in band D — lowest band (1–54). It sits 45 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. Twin Oaks Apartments's 133.3 kBtu/ft² across 97,377 sq ft works out to about 13 billion Btu (3,804 MWh-equivalent) in 2017. Its source EUI of 191.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 704,787 kWh of electricity, 105,734 therms of natural gas and 10,389 thousand gallons of water for the year.
Which law requires Twin Oaks Apartments to report its energy use?
Twin Oaks 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:PM3996319:2017). 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
- Anacostia Gardens· 97,084 sq ft · score 98 (A)
- Anacostia Gardens· 97,084 sq ft · score 90 (A)
- Griffin Condominium· 97,023 sq ft · score 6 (D)
- Cairo Condominium· 96,822 sq ft · score 14 (D)
- McCollough Terrace Apartments· 96,570 sq ft · score 92 (A)
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- 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
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is Twin Oaks Apartments's energy grade?
Twin Oaks Apartments scores 30 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 Twin Oaks Apartments use?
Its 2017 site energy-use intensity was 133.3 kBtu/ft² (191.6 kBtu/ft² source) across 97,377 sq ft, including 704,787 kWh of electricity and 105,734 therms of natural gas.
What are Twin Oaks Apartments's carbon emissions?
Twin Oaks Apartments reported 828 tCO₂e of greenhouse-gas emissions (8.5 kgCO₂e/ft²) for 2017.
Where is Twin Oaks Apartments?
Twin Oaks Apartments is at 3800 14th St NW, in Washington, DC 20011. Its coordinates are 38.93825, -77.03350 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Twin Oaks Apartments and when was it built?
Twin Oaks Apartments has 97,377 sq ft of gross floor area, as reported in its 2017 disclosure. The disclosure lists 1920 as its year built. It is classed as multifamily housing.
Is Twin Oaks 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, “Twin Oaks Apartments, Washington, DC — 2017 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/twin-oaks-apartments-f0c9ce6b (data as of July 9, 2026).