Structural engineering · Fresno, CA
Structural engineer in Fresno, California
Also searched as: residential structural engineer Fresno CA · Fresno County structural engineer · stamped structural calculations Fresno · commercial structural engineer Fresno CA · structural engineer near me Fresno CA
Local code & loads
Fresno building code & ASCE 7 design loads
Fresno enforces the 2025 California Building Code (CBC), based on the 2024 IBC. Stamped calculations submitted for permit reference the design parameters below.
Values shown for reference only — project-specific values from the ASCE 7 Hazard Tool should be used for engineering design at the actual project address.
ASCE 7 design parameters
Default values used for most residential and light-commercial projects in Fresno. Site Class and seismic spectral values may shift based on geotechnical investigation.
| Building code | 2025 California Building Code (CBC), based on the 2024 IBC |
|---|---|
| ASCE 7 edition | ASCE 7-22 |
| Seismic Sₛ | 0.72g |
| Seismic S₁ | 0.24g |
| Site class | Default |
| SᴅS | 0.67g |
| Sᴅ₁ | 0.42g |
| Seismic Design Category | D |
| Ultimate wind speed | 94 mph |
| Ground snow load | 0 psf |
Risk Category II assumed for typical residential and light commercial use — confirm with your engineer if the occupancy or use may require a higher category.
Fresno is the largest city in the San Joaquin Valley, situated at roughly 335 ft elevation on the valley floor. No design snow load at the city's elevation. Seismicity is moderate, with somewhat higher values than northern Central Valley cities due to proximity to the Sierra Nevada block. Deep alluvial soils are generally competent, but the Kings River-area floodplain and low-lying subregions may have softer deposits
Common projects engineers design in Fresno
The work engineers handle frequently in Fresno and the surrounding Fresno County.
- Load-bearing wall removals and open-concept remodels
- Accessory Dwelling Units (ADUs) and garage conversions
- Second-story additions and major room additions
- Commercial tenant improvements and retail build-outs
- Agricultural processing and cold storage structural design
- Foundation repair and assessment
- Deck and covered patio structures
- Rooftop solar structural verification
- Multi-family residential structural review
- Seismic retrofit of older Central Valley homes
What's different about Fresno
Local conditions that affect structural design
City-specific factors that show up in many Fresno calculations — and the things plan reviewers look for.
Permits
Where to submit your Fresno permit
Stamped calculations from clearspan are submitted directly to the City of Fresno — Planning & Development, Building & Safety Services. Most residential structural submittals are reviewed online.
Building department
City of Fresno — Planning & Development, Building & Safety Services
2600 Fresno St, Fresno, CA 93721
(559) 621-8084
Submittal notes
Fresno is the Fresno County seat and has its own Building & Safety Services. Clovis (adjacent city) has a separate Building Division. Unincorporated Fresno County parcels outside city limits use the Fresno County Department of Public Works & Planning. Confirm jurisdiction for properties near city-boundary lines.
FAQ
Structural engineering in Fresno — FAQs
The questions Fresno contractors and homeowners ask most often.
Do I need a structural engineer for a second-story addition in Fresno?+
What building code does Fresno use?+
Can clearspan handle a commercial project in Fresno?+
Nearby cities
Structural engineers in other Central Valley cities
Browse city pages for nearby jurisdictions.
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