Wisteria Mansion Condominium
Multifamily Housing in Washington, DC, DC · 1101 L Street NW · 20005
At a glance
Wisteria Mansion Condominium is a 50,691-square-foot multifamily housing building at 1101 L Street NW in Washington, DC, built in 1926. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 58.1 kBtu/ft² and 180 tCO₂e of greenhouse-gas emissions. That score is higher than 78% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 94 (band A) |
| Site EUI | 58.1 kBtu/ft² |
| Source EUI | 84.5 kBtu/ft² |
| GHG emissions | 180 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 199,577 kWh |
| Natural gas | 22,636 therms |
| Water use | 1,895 kgal |
| Gross floor area | 50,691 sq ft |
| Source record | dc:PM20474735:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 94 | -2 | 58.1 kBtu/ft² | 180 tCO₂e |
| 2023 | 96 | +1 | 51.8 kBtu/ft² | 162 tCO₂e |
| 2022 | 95 | 56.5 kBtu/ft² | 176 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
WISTERIA MANSION CONDO
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Location
- Address
- 1101 L Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20005
- Coordinates
- 38.90443, -77.02735
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does Wisteria Mansion Condominium 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. Wisteria Mansion Condominium's ENERGY STAR score of 94 compares with an average of 72 across the 1,618 that report a score; it scores higher than 78% of them and lower than 18%. Its site EUI of 58.1 kBtu/ft² is about 14% 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 3.5 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².
At 50,691 sq ft, it is about 63% below the average floor area of 136,346 sq ft for those buildings. It was built in 1926, 39 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 Wisteria Mansion Condominium's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for Wisteria Mansion Condominium, covering report years 2022–2024. Its ENERGY STAR score went from 95 in 2022 to 94 in 2024 (-1 points); its best year on file was 2023, at 96. Site EUI moved from 56.5 kBtu/ft² (2022) to 58.1 kBtu/ft² (2024), an 3% increase. Reported emissions went from 176 tCO₂e to 180 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 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. Wisteria Mansion Condominium's 58.1 kBtu/ft² across 50,691 sq ft works out to about 2.9 billion Btu (863 MWh-equivalent) in 2024. Its source EUI of 84.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 199,577 kWh of electricity, 22,636 therms of natural gas and 1,895 thousand gallons of water for the year.
Which law requires Wisteria Mansion Condominium to report its energy use?
Wisteria Mansion Condominium 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:PM20474735:2024). 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 multifamily housing buildings in Washington, DC
- Bruce Gardens· 50,636 sq ft · score 86 (A)
- The Griffin· 50,303 sq ft · score 92 (A)
- Rolling Terrace· 50,268 sq ft · score 65 (C)
- 1418-24 Somerset Pl NW· 50,048 sq ft · score 32 (D)
- West End Place Condominium· 50,000 sq ft · score 99 (A)
- Monsenor Romero· 50,000 sq ft · score 52 (D)
- 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 Wisteria Mansion Condominium's energy grade?
Wisteria Mansion Condominium scores 94 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 Wisteria Mansion Condominium use?
Its 2024 site energy-use intensity was 58.1 kBtu/ft² (84.5 kBtu/ft² source) across 50,691 sq ft, including 199,577 kWh of electricity and 22,636 therms of natural gas.
What are Wisteria Mansion Condominium's carbon emissions?
Wisteria Mansion Condominium reported 180 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is Wisteria Mansion Condominium?
Wisteria Mansion Condominium is at 1101 L Street NW, in Washington, DC 20005. Its coordinates are 38.90443, -77.02735 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Wisteria Mansion Condominium and when was it built?
Wisteria Mansion Condominium has 50,691 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is Wisteria Mansion Condominium 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, “Wisteria Mansion Condominium, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/wisteria-mansion-condominium-942446d7 (data as of July 9, 2026).