Building Permits in Fremont

Fremont requires a building permit for most construction, alteration, and repair work affecting structural, electrical, plumbing, or mechanical systems. Permits are issued by the City of Fremont Community Development Department — Building & Safety Division, which also handles plan review and field inspections.

Fremont has adopted the 2022 California Building Standards Code (Title 24) with local amendments in Title 9 of the Fremont Municipal Code. Because Fremont is bisected by the Hayward Fault — among the most seismically hazardous faults in North America — seismic design is a prominent consideration in every structural permit review.

When You Need a Permit

You generally need a Fremont building permit for:

• New construction, additions, and accessory structures including ADUs (Accessory Dwelling Units) and JADUs (Junior ADUs)
• Structural alterations, load-bearing wall changes, and foundation work
• Electrical work — new circuits, panel upgrades, EV charger installation, solar photovoltaic systems
• Plumbing work — water heater replacement or relocation, new fixtures, sewer and gas line changes
• Mechanical (HVAC) work — new systems, replacements, or duct modifications
• Reroofing and changes to window or door openings in exterior walls
• Swimming pools, spas, and retaining walls above a height threshold
• Garage conversions and habitable-space expansions
• Demolition of any habitable structure

Minor cosmetic work — interior painting, floor coverings, cabinetry without plumbing or electrical changes — is generally exempt. When in doubt, contact the Building & Safety Division before starting work.

Fremont Citizen Access Portal

The Fremont Citizen Access Portal is the city's online permitting system, accessible through the Building & Safety Division page at fremont.gov. Through the portal you can:

• Create an account and submit new permit applications
• Upload plans and supporting documents for electronic plan review
• Pay permit fees online
• Respond to plan check correction notices
• Request and track inspections
• View permit status and inspection history

In-person service is available at the Fremont Development Center for walk-in or appointment-based assistance. Contact the Building & Safety Division at (510) 494-4440 for office hours and counter service availability.

California Title 24 — Applicable Codes

All Fremont building permits must comply with the 2022 California Building Standards Code (Title 24):

Local Fremont amendments are codified in Title 9 of the Fremont Municipal Code. Always verify whether local amendments apply to your project type.

Seismic Requirements — Hayward Fault Zone

Fremont's position along the Hayward Fault places most of the city in Seismic Design Category D (SDC D) under the California Building Code — the second-highest seismic design classification applied to typical construction in California. Key implications for permit applicants:

• New construction and additions: Structural systems must be designed to CBC Chapter 16 seismic requirements for SDC D. A licensed California structural engineer is typically required for all but the simplest work.
• Geotechnical reports: Projects on or near the active fault trace may require a soils investigation report per the California Geological Survey's Alquist-Priolo Earthquake Fault Zone maps. Development within a designated Alquist-Priolo zone requires a geologic hazard report before a building permit can be issued.
• Existing buildings: Seismic retrofit work may be required or advisable for older unreinforced masonry, soft-story multi-unit, or non-ductile concrete buildings. Contact the Building & Safety Division to determine applicable requirements for your building type.
• Tesla Factory and industrial context: Fremont's large industrial and tech campus facilities are subject to CBC seismic provisions for higher-occupancy categories, which impose additional design demands.

ADU Permits — California 60-Day Rule

California state law requires Fremont to act on a complete, conforming ADU permit application within 60 calendar days (Government Code § 65852.2). Applications that are incomplete are subject to a 30-day correction notice; the 60-day clock runs from the date a complete application is accepted.

Fremont also operates a preapproved ADU plans program: qualifying designs that use city-approved standard plans receive an expedited 7-business-day plan review and a flat $1,000 plan review fee. This is significantly faster than a custom plan submittal. Contact the Building & Safety Division or see the ADU page at fremont.gov for currently approved plan sets.

Key ADU parameters under Fremont ordinance (as aligned with state law):

• Detached ADUs: up to 1,200 sq ft, 16-ft height limit, 4-ft rear and side setbacks
• Attached ADUs: up to 50% of primary dwelling or 1,200 sq ft
• JADUs: up to 500 sq ft within an existing structure
• No additional parking required for ADUs

Permit Costs

Fremont permit fees are established in the Building & Safety Division's official fee schedule, which is updated periodically. Typical fee categories include:

• Building permit fee — scales with project valuation
• Plan check fee — typically around 65% of the building permit fee for projects requiring full plan review
• Electrical, plumbing, and mechanical trade permit fees — separate fees per discipline
• Development impact fees — apply to new construction and additions that create new floor area (affordable housing, transportation, parks, and other impact categories)
• State surcharges — California Building Standards Administration Special Revolving Fund surcharge applied to all permits

Do not rely on third-party fee estimates. Check the current Fremont Building Fee Schedule on the Building & Safety Division website for up-to-date rates before budgeting your project.

Typical Timeline

Second and subsequent plan check correction cycles are typically shorter than the initial review if all comments are fully addressed in the resubmittal.

The Process

1. Pre-submittal: Confirm your parcel's zoning district, applicable overlays (Hillside, TOD, Historic Overlay District), and Alquist-Priolo fault zone status using the Fremont zoning map portal or by contacting the Planning Division at (510) 494-4440
2. Plans: Prepare drawings stamped by a California-licensed architect or engineer where required — typically required for all structural work and new construction. For SDC D seismic projects, a licensed structural engineer is generally required
3. Energy compliance: Prepare a Title 24 Part 6 energy compliance report (generated by a certified energy consultant) for projects subject to the California Energy Code
4. CALGreen documentation: Address CALGreen mandatory measures (Part 11) for new construction and major alterations
5. Submit via Citizen Access Portal: Upload application, plans, energy compliance documents, soils report if required, and pay applicable fees
6. Plan check: Building & Safety (and other departments as applicable — Planning, Public Works, Fire) reviews for compliance with CBC, CRC, CEnC, CALGreen, and Fremont local amendments
7. Corrections: Respond to plan check comments and resubmit through the portal until all corrections are resolved
8. Permit issuance: Pay remaining fees and receive the approved permit
9. Post permit card on site: Display permit and keep approved plans available for the inspector at all inspections
10. Inspections: Schedule required inspections at each construction phase through the Citizen Access Portal or by calling the Building & Safety Division
11. Final: Pass final inspection and receive a Certificate of Occupancy where required

Inspections

Typical inspection stages for residential projects include:

• Foundation / footings (before concrete pour)
• Underground plumbing and electrical
• Framing (before insulation or drywall)
• Rough plumbing, electrical, and mechanical
• Insulation
• Drywall (before taping)
• Energy — duct and envelope testing as required by Title 24 Part 6
• Final building and trade inspections

Schedule inspections through the Fremont Citizen Access Portal or by contacting the Building & Safety Division. Keep approved plans on site and available for the inspector at every visit.

Common Reasons for Corrections or Denial

• Plans don't comply with the 2022 California Building Standards Code (CBC/CRC) or Fremont local amendments (Title 9)
• Missing structural calculations or California-licensed structural engineer stamp
• Seismic design details inadequate for SDC D (Hayward Fault zone) requirements
• Missing geotechnical report for projects within or adjacent to an Alquist-Priolo Earthquake Fault Zone
• Title 24 Part 6 energy compliance documentation absent or incomplete
• CALGreen mandatory measures not addressed
• Zoning conflicts — setbacks, height limits, lot coverage, or use not permitted in the zone
• Hillside, TOD overlay, or Historic Overlay District (HOD) review not completed where required
• Missing utility clearances (Zone 7 Water Agency / ACWD — Alameda County Water District — water and sewer; PG&E electrical service)
• Incomplete submittal or missing documents in the Citizen Access Portal

Official Sources

Always verify current requirements with the City of Fremont Community Development Department — Building & Safety Division and the Fremont Citizen Access Portal before submitting plans or starting construction. See the sources listed in the frontmatter for direct links to the Building & Safety Division, the Citizen Access Portal, Fremont Municipal Code Title 9, California Title 24, and the ADU permit program.

Disclaimer: This guide summarizes publicly available information from official City of Fremont and State of California sources and is provided for general orientation only. It does not constitute legal or engineering advice. Building code and permitting requirements change — always confirm current rules with the City of Fremont Building & Safety Division before submitting plans or starting construction.