Simi Valley, California Building Permit Guide

Simi Valley is a Ventura County city of about 125,000 residents, set in a valley ringed by the Santa Susana Mountains at the eastern edge of the county. Its Building and Safety Division sits inside the Department of Environmental Services at City Hall on Tapo Canyon Road, and is the sole building authority inside the city, issuing permits under Title 24 with Simi Valley amendments.

This guide covers the Building and Safety Division, its online permit process, Title 24 with city amendments, and the wildfire, hillside and protected-tree issues that shape Simi Valley projects.

This guide covers work inside the City of Simi Valley limits. Unincorporated Ventura County and neighbouring cities are separate authorities.

What requires a building permit in Simi Valley?

Local amendments and thresholds differ from one jurisdiction to the next, so an exempt list from a neighbouring city is not reliable — a project waved through in one place needs a full permit set in the next. An exemption from a building permit is never an exemption from zoning, the statewide energy or green-building codes, or an electrical or plumbing permit. Confirm scope with Building and Safety before work starts.

The statewide layers that apply everywhere

Several parts of Title 24 apply on top of the base building code and routinely catch projects owners assume are exempt: the California Energy Code (Part 6); CALGreen (Part 11), California’s mandatory statewide green-building code; and the accessibility provisions in Chapters 11A and 11B. Seismic design is built into the code statewide, and in fire-prone areas the California Wildland-Urban Interface Code (Title 24, Part 7, in force since 1 January 2026) and Cal Fire defensible-space requirements (Public Resources Code 4291) add a further layer. In the City of Simi Valley, the Building and Safety Division administers Title 24 with city amendments, and wildfire hazard, hillside terrain and the city’s protected tree rules shape many projects.

California builds on one statewide code, Title 24, whose 2025 edition took effect on 1 January 2026; the editions in effect when the application is submitted apply, and cities and counties may adopt local amendments only with findings filed with the state (new residential amendments are largely frozen until June 2031). Title 24 and local amendments

Who handles permitting in Simi Valley?

The Building and Safety Division handles plan check, permit issuance and inspections for the City of Simi Valley under Title 24 and city amendments.

The Building and Safety Division runs plan check, permit issuance and inspection for the City of Simi Valley. Submittals are made online through the city’s self-service portal, and every submittal needs either a construction permit declaration from the contractor pulling the permit or an owner package where the property owner is filing. The division publishes submittal requirements by project type, including detached and attached single-family, multi-family and accessory dwelling units.

Confirm the parcel is inside the city first; unincorporated Ventura County and the neighbouring cities file with different authorities under their own amendments.

In 2025, building permits issued in Simi Valley authorized 92 new privately owned housing units, 1 of them a single-family home, according to the U.S. Census Bureau Building Permits Survey.

Permit types

Residential permits

Residential work inside the city is permitted and inspected by the division under Title 24 and city amendments. Additions, ADUs, reroofs, pools, solar and EV chargers need permits, and garden walls above 6 feet and retaining walls can need a building permit on their own. Removing a protected or mature native oak can require a separate tree removal permit.

Commercial permits

Commercial and multi-family work goes through division plan check against the California Building Code, the Energy Code and CALGreen, with city amendments. Most buildings must be designed by a California-registered architect or engineer, and structural calculations, engineering reports and specifications are submitted alongside the drawings. Larger tracts and commercial projects require a pre-construction meeting.

Licenses, trade classifications and design professionals

Practically, three credential layers appear on California projects: a CSLB license in the correct classification for the contractor pulling the permit; the specialty C-classifications for the electrical, plumbing and mechanical trades; and, on commercial and larger residential work, drawings stamped by a California-licensed architect or engineer. Confirm what Building and Safety requires for the specific building before filing.

Contractors are licensed statewide by the Contractors State License Board (Classes A, B, B-2 and C) for work of $1,000 or more or any permitted work; a city may also require a business licence or tax registration. Contractor licensing in California

Simi Valley permit costs and fees

Budget the city building permit and plan-check fees, separate trade permits, the state Building Standards and seismic surcharges, and any development impact fees. Re-inspection and additional plan-check time are charged at posted hourly rates; confirm the schedule in force on your filing date.

California layers two uniform state surcharges — the Building Standards Administration fee and the Strong Motion Instrumentation seismic fee — on top of the local charges (Health and Safety Code 18931.6; Public Resources Code 2705). The building and plan-check fees themselves are local and change, and California law limits them to the reasonable cost of providing the service, so a figure from a neighbouring city is not reliable — ask Building and Safety for the schedule in force on your filing date.

Trade permits and who may pull them

Each trade follows its part of Title 24 and is done by a contractor with the matching CSLB licence (C-10 electrical, C-36 plumbing, C-20 HVAC), a Class B contractor where allowed, or an owner-builder. Trade licences in California

How to apply for a Simi Valley building permit

Review, corrections and what actually causes delay

In California, the first cause of delay is uncertainty over jurisdiction — filing with the county when a city should have it, or missing a local amendment on top of Title 24. After that come Title 24 energy and CALGreen documentation, a CSLB classification that does not match the scope, and, in fire or coastal areas, defensible-space or coastal-zone requirements that were not addressed up front. Build the plan-check time into the schedule and confirm the checklist with Building and Safety before filing.

A building permit carries a validity period and can expire if work does not start or stalls between inspections; confirm the expiry with Simi Valley on phased or delayed work. Permit validity in California

Inspections in Simi Valley

Where a permit is required, standard checkpoints include footing and foundation, framing, rough-in electrical, plumbing and mechanical, insulation and Title 24 energy, CALGreen measures, fire systems on commercial work, and final, with a certificate of occupancy before use. Inspection requests received by the posted cut-off are performed the next working day, and inspectors are reachable at the office in set morning and afternoon windows.

California inspections are made against the code editions in effect when the permit application was submitted (Health and Safety Code 18938.5), so the approved plans and any energy and green-building documentation need to be on site for the inspector to check against. Confirm the notice Building and Safety needs and schedule around its inspection windows.

Do not cover work before the required inspection has been approved. Keep the issued permit, the approved plans, product listings, Title 24 energy documentation and your correction responses available on site.

Simi Valley permit search and official resources

Permit records in California sit with the local authority that issued them. Where the City of Simi Valley Building and Safety Division is the authority for the City of Simi Valley limits, it holds the building permit, the inspection history and the certificate of occupancy. If you are buying, refinancing or renovating, confirm that past work was permitted rather than assuming it was — and confirm the code edition that was in force.

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

• City of Simi Valley Building and Safety Division
• California Building Standards Commission (Title 24)
• Contractors State License Board (CSLB)
• Cal Fire (wildfire hazard and defensible space)
• California Energy Commission (Energy Code)

Frequently asked questions

Who issues building permits in the City of Simi Valley?

The Building and Safety Division, within the Department of Environmental Services, issues permits for work inside the city; unincorporated Ventura County and neighbouring cities are separate authorities.

How do I submit an application?

Online through the city’s self-service portal, with either a construction permit declaration from the contractor or the property owner package where the owner is filing.

Do I need a permit for a fence or wall?

Most residential fences do not need one, but a garden wall over 6 feet or a retaining wall can. Confirm with the permit counter before building.

Do I need a local contractor registration?

Not a contractor licence: California licenses contractors statewide through the CSLB, and the licence must be active and carry the classification that matches the work. A city may still require a business licence or business tax registration (Government Code 37101), so ask the department.

What about oak trees on the property?

Removing a protected tree, including a mature native oak, can require a separate tree removal permit. Check before clearing a building envelope.

How do I run a Simi Valley permit search?

The division holds the city’s permit and inspection records, and plan check status is visible through the self-service portal.

Simplify Simi Valley permitting with Alliance Permitting

Simi Valley rewards a filing that has cleared planning, hazard and tree questions before the building submittal goes online. Those are the items that stall an otherwise clean package.

Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.

Contractors and builders choose Alliance for Simi Valley because the work is done by people who have stood at the counter:

• We confirm the parcel is inside the city and route it to the division.
• We check whether a zoning clearance is needed before filing.
• We check hazard, hillside and protected tree constraints early.
• We file online with the correct declaration for contractor or owner.
• We track plan check, issuance and the inspection sequence through final.

Alliance Permitting is a permit documentation and submission company in California. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Simi Valley permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.