Oak & Iron - Co (Kr023)
Multifamily Housing in California, CA · 1100 Lincoln Avenue, Walnut Creek · 94596
At a glance
Oak & Iron - Co (Kr023) is a 145,658-square-foot multifamily housing building at 1100 Lincoln Avenue, Walnut Creek in Walnut Creek, California, built in 1961. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 30.0 kBtu/ft² and 265 tCO₂e of greenhouse-gas emissions. That score is higher than 63% 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 | 97 (band A) |
| Site EUI | 30.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 265 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 543,942 kWh |
| Natural gas | 25,075 therms |
| Gross floor area | 145,658 sq ft |
| Source record | california:12456579:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 97 | +12 | 30.0 kBtu/ft² | 265 tCO₂e |
| 2022 | 85 | +11 | 39.8 kBtu/ft² | 342 tCO₂e |
| 2021 | 74 | +9 | 49.3 kBtu/ft² | 384 tCO₂e |
| 2020 | 65 | 52.0 kBtu/ft² | 407 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
- 1100 Lincoln Avenue, Walnut Creek
- City
- California
- State
- California
- ZIP
- 94596
- Coordinates
- 37.90078, -122.05689
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Oak & Iron - Co (Kr023) 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. Oak & Iron - Co (Kr023)'s ENERGY STAR score of 97 compares with an average of 82 across the 9,612 that report a score; it scores higher than 63% of them and lower than 34%. Its site EUI of 30.0 kBtu/ft² is about 13% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.8 kgCO₂e/ft² is about 14% below the group average of 2.1 kgCO₂e/ft².
At 145,658 sq ft, it is roughly in line with the average floor area of 150,919 sq ft for those buildings. It was built in 1961, 27 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 Oak & Iron - Co (Kr023)'s energy performance changed over time?
BuildingCensus holds 4 California disclosures for Oak & Iron - Co (Kr023), covering report years 2020–2023. Its ENERGY STAR score went from 65 in 2020 to 97 in 2023 (+32 points). Site EUI moved from 52.0 kBtu/ft² (2020) to 30.0 kBtu/ft² (2023), a 42% decrease. Reported emissions went from 407 tCO₂e to 265 tCO₂e over the same span (down 35%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. Oak & Iron - Co (Kr023)'s 30.0 kBtu/ft² across 145,658 sq ft works out to about 4.4 billion Btu (1,281 MWh-equivalent) in 2023. The disclosure also reports 543,942 kWh of electricity and 25,075 therms of natural gas for the year.
Which law requires Oak & Iron - Co (Kr023) to report its energy use?
Oak & Iron - Co (Kr023) 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:12456579:2023). 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
- Sunstone Place Apartment Homes (Sc62)· 145,640 sq ft · EUI 27.3 kBtu/ft²
- Summerset Village Apartments· 145,600 sq ft · score 100 (A)
- The Hudson Apartments, A Greystar Elan Community· 145,562 sq ft · score 99 (A)
- Monaco 55+ Apartments· 145,530 sq ft · score 60 (C)
- 6530 Independence· 145,442 sq ft · score 93 (A)
- Baywoods Apt: Baywood Apt· 145,364 sq ft · score 60 (C)
- 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 Oak & Iron - Co (Kr023)'s energy grade?
Oak & Iron - Co (Kr023) scores 97 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Oak & Iron - Co (Kr023) use?
Its 2023 site energy-use intensity was 30.0 kBtu/ft² across 145,658 sq ft, including 543,942 kWh of electricity and 25,075 therms of natural gas.
What are Oak & Iron - Co (Kr023)'s carbon emissions?
Oak & Iron - Co (Kr023) reported 265 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2023.
Where is Oak & Iron - Co (Kr023)?
Oak & Iron - Co (Kr023) is at 1100 Lincoln Avenue, Walnut Creek, in Walnut Creek, California 94596. Its coordinates are 37.90078, -122.05689 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Oak & Iron - Co (Kr023) and when was it built?
Oak & Iron - Co (Kr023) has 145,658 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1961 as its year built. It is classed as multifamily housing.
Is Oak & Iron - Co (Kr023) 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, “Oak & Iron - Co (Kr023), Walnut Creek, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/oak-iron-co-kr023-2bc8f205 (data as of July 9, 2026).