Stronghold Engineering, Inc.
Office in California, CA · 150 West Walnut Avenue, Perris · 92571
At a glance
Stronghold Engineering, Inc. is a 50,257-square-foot office building at 150 West Walnut Avenue, Perris in Perris, California, built in 2005. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 19.6 kBtu/ft² and 70 tCO₂e of greenhouse-gas emissions. That score is higher than 91% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 19.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 70 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 290,195 kWh |
| Gross floor area | 50,257 sq ft |
| Source record | california:28000994:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 100 | ±0 | 19.6 kBtu/ft² | 70 tCO₂e |
| 2022 | 100 | 19.9 kBtu/ft² | 74 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 150 West Walnut Avenue, Perris
- City
- California
- State
- California
- ZIP
- 92571
- Coordinates
- 33.82788, -117.22909
Within ~1 km
Nearby benchmarked buildings
- Southwest Distribution Centerscore 38
Distribution Center · 1,301,330 sq ft
- Ine03003 - Perris Dc 3score 71
Distribution Center · 1,224,874 sq ft
- Ine03004 - Perris Dc 4score 100
Distribution Center · 783,407 sq ft
- 251 Riderscore 91
Non-Refrigerated Warehouse · 354,810 sq ft
- Storamerica Perrisscore —
Self-Storage Facility · 75,960 sq ft
See also: most efficient in California · biggest emitters
How does Stronghold Engineering, Inc. compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Stronghold Engineering, Inc.'s ENERGY STAR score of 100 compares with an average of 75 across the 4,912 that report a score; it scores higher than 91% of them. Its site EUI of 19.6 kBtu/ft² is about 65% below 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 1.4 kgCO₂e/ft² is about 61% below the group average of 3.6 kgCO₂e/ft².
At 50,257 sq ft, it is about 67% below the average floor area of 151,937 sq ft for those buildings. It was built in 2005, 20 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.
How has Stronghold Engineering, Inc.'s energy performance changed over time?
BuildingCensus holds 2 California disclosures for Stronghold Engineering, Inc., covering report years 2022–2023. Its ENERGY STAR score was 100 in both 2022 and 2023. Site EUI moved from 19.9 kBtu/ft² (2022) to 19.6 kBtu/ft² (2023), a 2% decrease. Reported emissions went from 74 tCO₂e to 70 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. Stronghold Engineering, Inc.'s 19.6 kBtu/ft² across 50,257 sq ft works out to about 1 billion Btu (289 MWh-equivalent) in 2023. The disclosure also reports 290,195 kWh of electricity for the year.
Which law requires Stronghold Engineering, Inc. to report its energy use?
Stronghold Engineering, Inc. 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:28000994:2023). 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 office buildings in California
- Nbcu Local (Knsd/Kuan) - 9680 Granite Ridge Dr, San Diego, Ca 92123· 50,220 sq ft · score 4 (D)
- 2550 Hanover St· 50,215 sq ft · score 57 (C)
- 9320 Wilshire Blvd· 50,214 sq ft · score 28 (D)
- 1200 California· 50,208 sq ft · score 54 (D)
- One Harbor Center· 50,201 sq ft · score 93 (A)
- 5353, 5403, 5353 & 5303 Betsy Ross Drive, Santa Clara· 50,200 sq ft · EUI 12.8 kBtu/ft²
- 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 Stronghold Engineering, Inc.'s energy grade?
Stronghold Engineering, Inc. scores 100 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 Stronghold Engineering, Inc. use?
Its 2023 site energy-use intensity was 19.6 kBtu/ft² across 50,257 sq ft, including 290,195 kWh of electricity.
What are Stronghold Engineering, Inc.'s carbon emissions?
Stronghold Engineering, Inc. reported 70 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2023.
Where is Stronghold Engineering, Inc.?
Stronghold Engineering, Inc. is at 150 West Walnut Avenue, Perris, in Perris, California 92571. Its coordinates are 33.82788, -117.22909 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Stronghold Engineering, Inc. and when was it built?
Stronghold Engineering, Inc. has 50,257 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2005 as its year built. It is classed as office.
Is Stronghold Engineering, Inc. 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Stronghold Engineering, Inc., Perris, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/stronghold-engineering-inc-ee364fc0 (data as of July 9, 2026).