Madelon Condominium
Mixed Use Property in Washington, DC, DC · 3251 Prospect Street NW · 20007
At a glance
Madelon Condominium is a 120,740-square-foot mixed use property building at 3251 Prospect Street NW in Washington, DC, built in 1980. In its 2024 Washington, DC benchmarking disclosure it reported a site energy-use intensity of 144.9 kBtu/ft² and 1,266 tCO₂e of greenhouse-gas emissions.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 144.9 kBtu/ft² |
| Source EUI | 292.9 kBtu/ft² |
| GHG emissions | 1,266 tCO₂e |
| GHG intensity | 10.5 kgCO₂e/ft² |
| Electricity | 2,846,922 kWh |
| Natural gas | 77,762 therms |
| Water use | 8,072 kgal |
| Gross floor area | 120,740 sq ft |
| Source record | dc:PM15083702:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 144.9 kBtu/ft² | 1,266 tCO₂e | |
| 2023 | — | 144.1 kBtu/ft² | 1,261 tCO₂e | |
| 2022 | — | 123.3 kBtu/ft² | 1,020 tCO₂e | |
| 2021 | — | 117.6 kBtu/ft² | 981 tCO₂e | |
| 2020 | — | 93.4 kBtu/ft² | 800 tCO₂e | |
| 2019 | — | 96.6 kBtu/ft² | 847 tCO₂e | |
| 2018 | — | 96.9 kBtu/ft² | 897 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
MADELON CONDOMINIUM
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Location
- Address
- 3251 Prospect Street NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20007
- Coordinates
- 38.90619, -77.06380
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does Madelon Condominium compare with other mixed use property buildings in Washington, DC?
The latest disclosures cover 52 mixed use property buildings in Washington, DC, out of 6,870 buildings citywide. Its site EUI of 144.9 kBtu/ft² is about 90% above the average of 76.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 10.5 kgCO₂e/ft² is about 78% above the group average of 5.9 kgCO₂e/ft².
At 120,740 sq ft, it is about 72% below the average floor area of 436,301 sq ft for those buildings. It was built in 1980, 9 years later than the group's average year built (1971). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
How has Madelon Condominium's energy performance changed over time?
BuildingCensus holds 7 Washington, DC disclosures for Madelon Condominium, covering report years 2018–2024. Site EUI moved from 96.9 kBtu/ft² (2018) to 144.9 kBtu/ft² (2024), an 50% increase. Reported emissions went from 897 tCO₂e to 1,266 tCO₂e over the same span (up 41%).
What does a site EUI of 144.9 kBtu/ft² mean?
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. Madelon Condominium's 144.9 kBtu/ft² across 120,740 sq ft works out to about 17.5 billion Btu (5,127 MWh-equivalent) in 2024. Its source EUI of 292.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,846,922 kWh of electricity, 77,762 therms of natural gas and 8,072 thousand gallons of water for the year.
Which law requires Madelon Condominium to report its energy use?
Madelon 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:PM15083702:2024). 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 mixed use property buildings in Washington, DC
- 1841 Columbia Road· 120,650 sq ft · EUI 41.7 kBtu/ft²
- 3 Washington Circle Condominium· 110,550 sq ft · score 60 (C)
- Emery Shelter/DCPS Offices· 105,383 sq ft · score 53 (D)
- Horizon House· 105,370 sq ft · score 54 (D)
- 4401 Connecticut Avenue· 98,147 sq ft · EUI 94.1 kBtu/ft²
- East Blade Investors LP· 93,383 sq ft · EUI 74.6 kBtu/ft²
- Mixed Use Property buildings in Washington, DC· 52 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 Madelon Condominium's energy grade?
Madelon Condominium did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 144.9 kBtu/ft².
How much energy does Madelon Condominium use?
Its 2024 site energy-use intensity was 144.9 kBtu/ft² (292.9 kBtu/ft² source) across 120,740 sq ft, including 2,846,922 kWh of electricity and 77,762 therms of natural gas.
What are Madelon Condominium's carbon emissions?
Madelon Condominium reported 1,266 tCO₂e of greenhouse-gas emissions (10.5 kgCO₂e/ft²) for 2024.
Where is Madelon Condominium?
Madelon Condominium is at 3251 Prospect Street NW, in Washington, DC 20007. Its coordinates are 38.90619, -77.06380 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Madelon Condominium and when was it built?
Madelon Condominium has 120,740 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1980 as its year built. It is classed as mixed use property.
Is Madelon 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, “Madelon Condominium, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/madelon-condominium-04eb82e2 (data as of July 9, 2026).