Blake Telegraph Apartments
Multifamily (5+ Units) in Berkeley, CA · 2423 BLAKE ST
At a glance
Blake Telegraph Apartments is a 18,063-square-foot multifamily (5+ units) building at 2423 BLAKE ST in Berkeley, California. In its 2025 Berkeley benchmarking disclosure it reported a site energy-use intensity of 41.8 kBtu/ft².
BESO (BMC Chapter 19.81) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 41.8 kBtu/ft² |
| Source EUI | 56.0 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 36,684 kWh |
| Natural gas | 6,292 therms |
| Gross floor area | 18,063 sq ft |
| Source record | berkeley:8020:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 41.8 kBtu/ft² | — | |
| 2024 | — | 39.9 kBtu/ft² | — | |
| 2023 | — | 39.2 kBtu/ft² | — | |
| 2022 | — | 34.1 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
- 2423 BLAKE 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 Blake Telegraph Apartments 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 41.8 kBtu/ft² is about 27% above the average of 32.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 18,063 sq ft, it is about half of the average floor area of 33,316 sq ft for those buildings.
How has Blake Telegraph Apartments's energy performance changed over time?
BuildingCensus holds 4 Berkeley disclosures for Blake Telegraph Apartments, covering report years 2022–2025. Site EUI moved from 34.1 kBtu/ft² (2022) to 41.8 kBtu/ft² (2025), an 23% increase.
What does a site EUI of 41.8 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. Blake Telegraph Apartments's 41.8 kBtu/ft² across 18,063 sq ft works out to about 0.8 billion Btu (221 MWh-equivalent) in 2025. Its source EUI of 56.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 36,684 kWh of electricity and 6,292 therms of natural gas for the year.
Which law requires Blake Telegraph Apartments to report its energy use?
Blake Telegraph Apartments 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:8020:2025). 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
- 2540 BENVENUE AVE· 18,051 sq ft · score 100 (A)
- 2315 PARKER ST· 18,007 sq ft · score 97 (A)
- The North Berkeley Oxford Street Apartments· 17,880 sq ft · EUI 27.4 kBtu/ft²
- Channing Apartments· 17,878 sq ft · EUI 73.6 kBtu/ft²
- 2533 DURANT AVE· 17,823 sq ft · EUI 38.9 kBtu/ft²
- Delta Delta Delta· 17,822 sq ft · score 75 (B)
- 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 Blake Telegraph Apartments's energy grade?
Blake Telegraph Apartments did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 41.8 kBtu/ft².
How much energy does Blake Telegraph Apartments use?
Its 2025 site energy-use intensity was 41.8 kBtu/ft² (56.0 kBtu/ft² source) across 18,063 sq ft, including 36,684 kWh of electricity and 6,292 therms of natural gas.
What are Blake Telegraph Apartments's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Blake Telegraph Apartments?
Blake Telegraph Apartments is at 2423 BLAKE ST, in Berkeley, California.
How big is Blake Telegraph Apartments and when was it built?
Blake Telegraph Apartments has 18,063 sq ft of gross floor area, as reported in its 2025 disclosure. It is classed as multifamily (5+ units).
Is Blake Telegraph Apartments 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, “Blake Telegraph Apartments, Berkeley, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/berkeley/blake-telegraph-apartments-4f24acf1 (data as of October 2, 2026).