1951 CHESTNUT ST
Multifamily (5+ Units) in Berkeley, CA
At a glance
1951 CHESTNUT ST is a 19,378-square-foot multifamily (5+ units) building in Berkeley, California. In its 2025 Berkeley benchmarking disclosure it reported a site energy-use intensity of 48.1 kBtu/ft².
BESO (BMC Chapter 19.81) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 48.1 kBtu/ft² |
| Source EUI | 64.5 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 45,468 kWh |
| Natural gas | 7,775 therms |
| Gross floor area | 19,378 sq ft |
| Source record | berkeley:8910:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 48.1 kBtu/ft² | — | |
| 2024 | — | 48.3 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 1951 CHESTNUT ST
- 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 1951 CHESTNUT ST 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 48.1 kBtu/ft² is about 46% above the average of 32.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 19,378 sq ft, it is about 42% below the average floor area of 33,316 sq ft for those buildings.
How has 1951 CHESTNUT ST's energy performance changed over time?
BuildingCensus holds 2 Berkeley disclosures for 1951 CHESTNUT ST, covering report years 2024–2025. Site EUI moved from 48.3 kBtu/ft² (2024) to 48.1 kBtu/ft² (2025), a 0% decrease.
What does a site EUI of 48.1 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. 1951 CHESTNUT ST's 48.1 kBtu/ft² across 19,378 sq ft works out to about 0.9 billion Btu (273 MWh-equivalent) in 2025. Its source EUI of 64.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 45,468 kWh of electricity and 7,775 therms of natural gas for the year.
Which law requires 1951 CHESTNUT ST to report its energy use?
1951 CHESTNUT ST 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:8910:2025). 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
- 2430 PROSPECT ST· 19,188 sq ft · score 93 (A)
- 2830 BANCROFT WAY· 19,000 sq ft · score 87 (A)
- Channing Poolside Apartments· 18,925 sq ft · score 95 (A)
- The Rapa-Nui· 18,894 sq ft · score 100 (A)
- 2724 Channing Way· 18,850 sq ft · EUI 29.0 kBtu/ft²
- The Luxor Apartments· 18,765 sq ft · score 65 (C)
- Multifamily (5+ Units) buildings in Berkeley· 202 benchmarked
- All Berkeley benchmarked buildings· BESO (BMC Chapter 19.81)
- Most efficient large buildings in Berkeley
- Least efficient large buildings in Berkeley
- Biggest emitters in Berkeley
Frequently asked questions
What is 1951 CHESTNUT ST's energy grade?
1951 CHESTNUT ST did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 48.1 kBtu/ft².
How much energy does 1951 CHESTNUT ST use?
Its 2025 site energy-use intensity was 48.1 kBtu/ft² (64.5 kBtu/ft² source) across 19,378 sq ft, including 45,468 kWh of electricity and 7,775 therms of natural gas.
What are 1951 CHESTNUT ST's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is 1951 CHESTNUT ST?
1951 CHESTNUT ST is in Berkeley, California.
How big is 1951 CHESTNUT ST and when was it built?
1951 CHESTNUT ST has 19,378 sq ft of gross floor area, as reported in its 2025 disclosure. It is classed as multifamily (5+ units).
Is 1951 CHESTNUT ST 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, “1951 CHESTNUT ST, Berkeley, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/berkeley/1951-chestnut-st-422eb802 (data as of October 2, 2026).