2821 HILLEGASS AVE
Multifamily (5+ Units) in Berkeley, CA
At a glance
2821 HILLEGASS AVE is a 15,148-square-foot multifamily (5+ units) building in Berkeley, California. In its 2025 Berkeley benchmarking disclosure it reported a site energy-use intensity of 41.4 kBtu/ft².
BESO (BMC Chapter 19.81) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 41.4 kBtu/ft² |
| Source EUI | 57.5 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 35,584 kWh |
| Natural gas | 5,063 therms |
| Gross floor area | 15,148 sq ft |
| Source record | berkeley:7240:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 41.4 kBtu/ft² | — | |
| 2024 | — | 41.9 kBtu/ft² | — | |
| 2023 | — | 41.6 kBtu/ft² | — | |
| 2022 | — | 41.5 kBtu/ft² | — |
Compliance context
BESO (BMC Chapter 19.81)
Berkeley's BESO requires annual benchmarking for commercial and multifamily buildings of 15,000 sq ft or more, with energy assessments at time of listing and every five years for buildings of 25,000 sq ft or more.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 2821 HILLEGASS AVE
- City
- Berkeley
- State
- California
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Berkeley · biggest emitters
How does 2821 HILLEGASS AVE compare with other multifamily (5+ units) buildings in Berkeley?
The latest disclosures cover 202 multifamily (5+ units) buildings in Berkeley, out of 440 buildings citywide. Its site EUI of 41.4 kBtu/ft² is about 26% above the average of 32.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 15,148 sq ft, it is about half of the average floor area of 33,316 sq ft for those buildings.
How has 2821 HILLEGASS AVE's energy performance changed over time?
BuildingCensus holds 4 Berkeley disclosures for 2821 HILLEGASS AVE, covering report years 2022–2025. Site EUI moved from 41.5 kBtu/ft² (2022) to 41.4 kBtu/ft² (2025), a 0% decrease.
What does a site EUI of 41.4 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. 2821 HILLEGASS AVE's 41.4 kBtu/ft² across 15,148 sq ft works out to about 0.6 billion Btu (184 MWh-equivalent) in 2025. Its source EUI of 57.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 35,584 kWh of electricity and 5,063 therms of natural gas for the year.
Which law requires 2821 HILLEGASS AVE to report its energy use?
2821 HILLEGASS AVE reports under BESO (BMC Chapter 19.81), the legal basis of Berkeley's Building Emissions Saving Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record berkeley:7240:2025). Berkeley's BESO requires annual benchmarking for commercial and multifamily buildings of 15,000 sq ft or more, with energy assessments at time of listing and every five years for buildings of 25,000 sq ft or more.
More multifamily (5+ units) buildings in Berkeley
Frequently asked questions
What is 2821 HILLEGASS AVE's energy grade?
2821 HILLEGASS AVE did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 41.4 kBtu/ft².
How much energy does 2821 HILLEGASS AVE use?
Its 2025 site energy-use intensity was 41.4 kBtu/ft² (57.5 kBtu/ft² source) across 15,148 sq ft, including 35,584 kWh of electricity and 5,063 therms of natural gas.
What are 2821 HILLEGASS AVE's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is 2821 HILLEGASS AVE?
2821 HILLEGASS AVE is in Berkeley, California.
How big is 2821 HILLEGASS AVE and when was it built?
2821 HILLEGASS AVE has 15,148 sq ft of gross floor area, as reported in its 2025 disclosure. It is classed as multifamily (5+ units).
Is 2821 HILLEGASS AVE covered by BESO (BMC Chapter 19.81)?
Yes — it appears in the 2025 Building Emissions Saving Ordinance disclosure, which lists the buildings reporting under BESO (BMC Chapter 19.81).
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About this data
Source: Building Emissions Saving Ordinance (BESO (BMC Chapter 19.81)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “2821 HILLEGASS AVE, Berkeley, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/berkeley/2821-hillegass-ave-520307f6 (data as of October 2, 2026).