St. Martin's Apartments LP
Multifamily Housing in Washington, DC, DC · 116 T Street · 20002
At a glance
St. Martin's Apartments LP is a 280,000-square-foot multifamily housing building at 116 T Street in Washington, DC. In its 2018 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 24.7 kBtu/ft² and 649 tCO₂e of greenhouse-gas emissions. That score is higher than 82% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 24.7 kBtu/ft² |
| Source EUI | 67.3 kBtu/ft² |
| GHG emissions | 649 tCO₂e |
| GHG intensity | 2.3 kgCO₂e/ft² |
| Electricity | 1,935,982 kWh |
| Natural gas | 41,874 therms |
| Water use | 12,569 kgal |
| Gross floor area | 280,000 sq ft |
| Source record | dc:PM4556577:2018 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2018latest | 95 | +17 | 24.7 kBtu/ft² | 649 tCO₂e |
| 2017 | 78 | -5 | 36.2 kBtu/ft² | 898 tCO₂e |
| 2016 | 83 | -2 | 36.2 kBtu/ft² | 929 tCO₂e |
| 2015 | 85 | 36.7 kBtu/ft² | 1,039 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
ST MARTIN'S APARTMENTS LP
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Location
- Address
- 116 T Street
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20002
- Coordinates
- 38.91575, -77.00531
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does St. Martin's Apartments LP 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. St. Martin's Apartments LP's ENERGY STAR score of 95 compares with an average of 72 across the 1,618 that report a score; it scores higher than 82% of them and lower than 16%. Its site EUI of 24.7 kBtu/ft² is about half of the average of 51.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.3 kgCO₂e/ft² is about 39% below the group average of 3.8 kgCO₂e/ft².
At 280,000 sq ft, it is about twice the average floor area of 136,346 sq ft for those buildings. 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 St. Martin's Apartments LP's energy performance changed over time?
BuildingCensus holds 4 Washington, DC disclosures for St. Martin's Apartments LP, covering report years 2015–2018. Its ENERGY STAR score went from 85 in 2015 to 95 in 2018 (+10 points). Site EUI moved from 36.7 kBtu/ft² (2015) to 24.7 kBtu/ft² (2018), a 33% decrease. Reported emissions went from 1,039 tCO₂e to 649 tCO₂e over the same span (down 38%).
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. St. Martin's Apartments LP's 24.7 kBtu/ft² across 280,000 sq ft works out to about 6.9 billion Btu (2,027 MWh-equivalent) in 2018. Its source EUI of 67.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,935,982 kWh of electricity, 41,874 therms of natural gas and 12,569 thousand gallons of water for the year.
Which law requires St. Martin's Apartments LP to report its energy use?
St. Martin's Apartments LP 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 2018 disclosure (source record dc:PM4556577:2018). 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
- Oxford Manor· 279,872 sq ft · score 50 (D)
- Park Van Ness (pv70)· 279,617 sq ft · score 69 (C)
- Plaza West· 278,987 sq ft · score 78 (B)
- Allegro Apts. (D.C.) (ll083)· 278,258 sq ft · score 98 (A)
- Woodland Terrace· 277,729 sq ft · score 31 (D)
- Woodley Park Towers· 277,726 sq ft · score 91 (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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- Biggest emitters in Washington, DC
Frequently asked questions
What is St. Martin's Apartments LP's energy grade?
St. Martin's Apartments LP scores 95 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2018 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does St. Martin's Apartments LP use?
Its 2018 site energy-use intensity was 24.7 kBtu/ft² (67.3 kBtu/ft² source) across 280,000 sq ft, including 1,935,982 kWh of electricity and 41,874 therms of natural gas.
What are St. Martin's Apartments LP's carbon emissions?
St. Martin's Apartments LP reported 649 tCO₂e of greenhouse-gas emissions (2.3 kgCO₂e/ft²) for 2018.
Where is St. Martin's Apartments LP?
St. Martin's Apartments LP is at 116 T Street, in Washington, DC 20002. Its coordinates are 38.91575, -77.00531 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is St. Martin's Apartments LP and when was it built?
St. Martin's Apartments LP has 280,000 sq ft of gross floor area, as reported in its 2018 disclosure. It is classed as multifamily housing.
Is St. Martin's Apartments LP covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2018 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, “St. Martin's Apartments LP, Washington, DC — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/st-martin-s-apartments-lp-8ad4ca45 (data as of July 9, 2026).