Tan Plaza Apartments (Tz37)
Multifamily Housing in California, CA · 580 Arastradero Road, Palo Alto · 94306
At a glance
Tan Plaza Apartments (Tz37) is a 85,462-square-foot multifamily housing building at 580 Arastradero Road, Palo Alto in Palo Alto, California, built in 1965. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 44 out of 100 (grade D), a site energy-use intensity of 51.9 kBtu/ft² and 289 tCO₂e of greenhouse-gas emissions. That score is higher than 8% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 44 (band D) |
| Site EUI | 51.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 289 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 672,411 kWh |
| Natural gas | 23,850 therms |
| Gross floor area | 85,462 sq ft |
| Source record | california:6246805:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 44 | -30 | 51.9 kBtu/ft² | 289 tCO₂e |
| 2021 | 74 | +3 | 45.3 kBtu/ft² | 226 tCO₂e |
| 2020 | 71 | 52.7 kBtu/ft² | 255 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 580 Arastradero Road, Palo Alto
- City
- California
- State
- California
- ZIP
- 94306
- Coordinates
- 37.40792, -122.12597
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Tan Plaza Apartments (Tz37) compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Tan Plaza Apartments (Tz37)'s ENERGY STAR score of 44 compares with an average of 82 across the 9,612 that report a score; it scores higher than 8% of them and lower than 92%. Its site EUI of 51.9 kBtu/ft² is about 51% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.4 kgCO₂e/ft² is about 62% above the group average of 2.1 kgCO₂e/ft².
At 85,462 sq ft, it is about 43% below the average floor area of 150,919 sq ft for those buildings. It was built in 1965, 23 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Tan Plaza Apartments (Tz37)'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for Tan Plaza Apartments (Tz37), covering report years 2020, 2021, 2023. Its ENERGY STAR score went from 71 in 2020 to 44 in 2023 (-27 points); its best year on file was 2021, at 74. Site EUI moved from 52.7 kBtu/ft² (2020) to 51.9 kBtu/ft² (2023), a 2% decrease. Reported emissions went from 255 tCO₂e to 289 tCO₂e over the same span (up 13%).
What does an ENERGY STAR score of 44 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 points below 75, the threshold for ENERGY STAR certification. In California, 65% of scored buildings are at 75 or above.
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. Tan Plaza Apartments (Tz37)'s 51.9 kBtu/ft² across 85,462 sq ft works out to about 4.4 billion Btu (1,300 MWh-equivalent) in 2023. The disclosure also reports 672,411 kWh of electricity and 23,850 therms of natural gas for the year.
Which law requires Tan Plaza Apartments (Tz37) to report its energy use?
Tan Plaza Apartments (Tz37) reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record california:6246805:2023). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More multifamily housing buildings in California
- Peninsula Station: 2971 Peninsula Station· 85,451 sq ft · score 98 (A)
- The Summit At Point Loma - Tp65· 85,430 sq ft · score 86 (A)
- Tower Apartments· 85,400 sq ft · score 96 (A)
- 2855 The Villages Pkwy· 85,377 sq ft · score 100 (A)
- 2251 Northrop Ave· 85,364 sq ft · score 100 (A)
- 724 Laurel Ave· 85,328 sq ft · score 96 (A)
- Multifamily Housing buildings in California· 10,630 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Tan Plaza Apartments (Tz37)'s energy grade?
Tan Plaza Apartments (Tz37) scores 44 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Tan Plaza Apartments (Tz37) use?
Its 2023 site energy-use intensity was 51.9 kBtu/ft² across 85,462 sq ft, including 672,411 kWh of electricity and 23,850 therms of natural gas.
What are Tan Plaza Apartments (Tz37)'s carbon emissions?
Tan Plaza Apartments (Tz37) reported 289 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2023.
Where is Tan Plaza Apartments (Tz37)?
Tan Plaza Apartments (Tz37) is at 580 Arastradero Road, Palo Alto, in Palo Alto, California 94306. Its coordinates are 37.40792, -122.12597 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Tan Plaza Apartments (Tz37) and when was it built?
Tan Plaza Apartments (Tz37) has 85,462 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1965 as its year built. It is classed as multifamily housing.
Is Tan Plaza Apartments (Tz37) covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Tan Plaza Apartments (Tz37), Palo Alto, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/tan-plaza-apartments-tz37-4b270b18 (data as of July 9, 2026).