Hillwood Estate, Museum & Gardens
Museum in Washington, DC, DC · 4155 Linnean Ave NW · 20008
At a glance
Hillwood Estate, Museum & Gardens is a 97,127-square-foot museum building at 4155 Linnean Ave NW in Washington, DC, built in 1926. In its 2024 Washington, DC benchmarking disclosure it reported a site energy-use intensity of 89.0 kBtu/ft² and 621 tCO₂e of greenhouse-gas emissions.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 89.0 kBtu/ft² |
| Source EUI | 177.3 kBtu/ft² |
| GHG emissions | 621 tCO₂e |
| GHG intensity | 6.4 kgCO₂e/ft² |
| Electricity | 1,364,196 kWh |
| Natural gas | 39,896 therms |
| Water use | 2,685 kgal |
| Gross floor area | 97,127 sq ft |
| Source record | dc:PM6719573:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 89.0 kBtu/ft² | 621 tCO₂e | |
| 2023 | — | 89.0 kBtu/ft² | 617 tCO₂e | |
| 2022 | — | 89.8 kBtu/ft² | 621 tCO₂e | |
| 2021 | — | 88.6 kBtu/ft² | 633 tCO₂e | |
| 2020 | — | 84.7 kBtu/ft² | 558 tCO₂e | |
| 2019 | — | 114.9 kBtu/ft² | 760 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
HILLWOOD ESTATE MUSEUM AND GARDENS
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Location
- Address
- 4155 Linnean Ave NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20008
- Coordinates
- 38.94363, -77.05262
Within ~1 km
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See also: most efficient in Washington, DC · biggest emitters
How does Hillwood Estate, Museum & Gardens compare with other museum buildings in Washington, DC?
The latest disclosures cover 11 museum buildings in Washington, DC, out of 6,870 buildings citywide. Its site EUI of 89.0 kBtu/ft² is about 17% below the average of 106.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.4 kgCO₂e/ft² is about 27% below the group average of 8.7 kgCO₂e/ft².
At 97,127 sq ft, it is about 14% below the average floor area of 113,317 sq ft for those buildings. It was built in 1926, 23 years earlier than the group's average year built (1949).
How has Hillwood Estate, Museum & Gardens's energy performance changed over time?
BuildingCensus holds 6 Washington, DC disclosures for Hillwood Estate, Museum & Gardens, covering report years 2019–2024. Site EUI moved from 114.9 kBtu/ft² (2019) to 89.0 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 760 tCO₂e to 621 tCO₂e over the same span (down 18%).
What does a site EUI of 89.0 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. Hillwood Estate, Museum & Gardens's 89.0 kBtu/ft² across 97,127 sq ft works out to about 8.6 billion Btu (2,533 MWh-equivalent) in 2024. Its source EUI of 177.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,364,196 kWh of electricity, 39,896 therms of natural gas and 2,685 thousand gallons of water for the year.
Which law requires Hillwood Estate, Museum & Gardens to report its energy use?
Hillwood Estate, Museum & Gardens 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:PM6719573:2024). 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 museum buildings in Washington, DC
- National Museum of Women in the Arts· 93,219 sq ft · EUI 95.2 kBtu/ft²
- Franklin School· 53,302 sq ft · EUI 90.0 kBtu/ft²
- GW Museum and Textile Museum· 52,085 sq ft · EUI 0.8 kBtu/ft²
- 2118 Massachusetts Avenue NW· 44,936 sq ft · EUI 107.3 kBtu/ft²
- Museum of the Americas· 9,606 sq ft · EUI 18.3 kBtu/ft²
- 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 Hillwood Estate, Museum & Gardens's energy grade?
Hillwood Estate, Museum & Gardens did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 89.0 kBtu/ft².
How much energy does Hillwood Estate, Museum & Gardens use?
Its 2024 site energy-use intensity was 89.0 kBtu/ft² (177.3 kBtu/ft² source) across 97,127 sq ft, including 1,364,196 kWh of electricity and 39,896 therms of natural gas.
What are Hillwood Estate, Museum & Gardens's carbon emissions?
Hillwood Estate, Museum & Gardens reported 621 tCO₂e of greenhouse-gas emissions (6.4 kgCO₂e/ft²) for 2024.
Where is Hillwood Estate, Museum & Gardens?
Hillwood Estate, Museum & Gardens is at 4155 Linnean Ave NW, in Washington, DC 20008. Its coordinates are 38.94363, -77.05262 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Hillwood Estate, Museum & Gardens and when was it built?
Hillwood Estate, Museum & Gardens has 97,127 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as museum.
Is Hillwood Estate, Museum & Gardens 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, “Hillwood Estate, Museum & Gardens, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/hillwood-estate-museum-gardens-2938c6a4 (data as of July 9, 2026).