1990 N California St - Ygnacio Center 1
Office in California, CA · 1990 North California Boulevard, Walnut Creek · 94596
At a glance
1990 N California St - Ygnacio Center 1 is a 202,386-square-foot office building at 1990 North California Boulevard, Walnut Creek in Walnut Creek, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 29.1 kBtu/ft² and 362 tCO₂e of greenhouse-gas emissions. That score is higher than 78% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 29.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 362 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 1,075,962 kWh |
| Natural gas | 22,283 therms |
| Gross floor area | 202,386 sq ft |
| Source record | california:59108993:2024 |
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
- 1990 North California Boulevard, Walnut Creek
- City
- California
- State
- California
- ZIP
- 94596
- Coordinates
- 37.90659, -122.06594
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 1990 N California St - Ygnacio Center 1 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 1990 N California St - Ygnacio Center 1's ENERGY STAR score of 95 compares with an average of 75 across the 4,912 that report a score; it scores higher than 78% of them and lower than 20%. Its site EUI of 29.1 kBtu/ft² is about half of the average of 56.4 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 half of the group average of 3.6 kgCO₂e/ft².
At 202,386 sq ft, it is about 33% above the average floor area of 151,937 sq ft for those buildings. It was built in 2000, 15 years later than the group's average year built (1985). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. 1990 N California St - Ygnacio Center 1's 29.1 kBtu/ft² across 202,386 sq ft works out to about 5.9 billion Btu (1,726 MWh-equivalent) in 2024. The disclosure also reports 1,075,962 kWh of electricity and 22,283 therms of natural gas for the year.
Which law requires 1990 N California St - Ygnacio Center 1 to report its energy use?
1990 N California St - Ygnacio Center 1 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 2024 disclosure (source record california:59108993:2024). 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 office buildings in California
- Schilling Place - Admin North Building· 202,358 sq ft · EUI 113.1 kBtu/ft²
- Schilling Complex - Office Building· 202,358 sq ft · score 61 (C)
- Puente Hills Business Center· 202,207 sq ft
- 3633 Inland Empire Blvd.· 202,067 sq ft · score 77 (B)
- One Viper Way· 202,045 sq ft
- Palo Alto, Ca - 3333 Coyote Hill Rd.· 202,000 sq ft
- Office buildings in California· 6,214 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 1990 N California St - Ygnacio Center 1's energy grade?
1990 N California St - Ygnacio Center 1 scores 95 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1990 N California St - Ygnacio Center 1 use?
Its 2024 site energy-use intensity was 29.1 kBtu/ft² across 202,386 sq ft, including 1,075,962 kWh of electricity and 22,283 therms of natural gas.
What are 1990 N California St - Ygnacio Center 1's carbon emissions?
1990 N California St - Ygnacio Center 1 reported 362 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2024.
Where is 1990 N California St - Ygnacio Center 1?
1990 N California St - Ygnacio Center 1 is at 1990 North California Boulevard, Walnut Creek, in Walnut Creek, California 94596. Its coordinates are 37.90659, -122.06594 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 1990 N California St - Ygnacio Center 1 and when was it built?
1990 N California St - Ygnacio Center 1 has 202,386 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is 1990 N California St - Ygnacio Center 1 covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 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, “1990 N California St - Ygnacio Center 1, Walnut Creek, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/1990-n-california-st-ygnacio-center-1-bd0296d8 (data as of July 9, 2026).