Do I need a permit for a small shed in Chico?

It depends on size and fire zone. Detached accessory structures under 200 square feet are exempt from permitting in Moderate or Local Responsibility fire-hazard areas. If your property is in a VHFSZ (Very High Fire Hazard Severity Zone), any structure over 100 square feet requires a permit and Class A-rated roofing. Check your fire-zone designation first — it takes 2 minutes on the Cal Fire hazard map. If you're borderline (190 sq ft), getting a permit is cheaper than losing it to a denial letter.

What's the frost depth for footings in Chico?

Downtown and lower-elevation Chico (below 1,500 feet) has minimal frost — frost depth is negligible, and CBC minimum 12 inches is sufficient for most residential decks and sheds. Mountain neighborhoods and foothill properties (1,500+ feet) experience frost to 24-30 inches depending on elevation and soil. Call the Building Department with your address; they'll give you a straight answer in 2 minutes. Don't guess on frost depth — a shallow footing that frost-heaves is expensive to fix.

Can I do my own electrical work in Chico if I'm the homeowner?

No. California Business and Professions Code Section 7044 prohibits owner-builders from pulling electrical permits, even for their own homes. All electrical work — adding circuits, outlets, panels, or moving fixtures — must be done by a licensed electrician who files the subpermit. Plumbing has the same rule. General construction (framing, decks, additions) you can do yourself if you pull the building permit, but trades are off-limits.

I'm in a fire-hazard zone. Does that change my deck or shed permit?

Yes, significantly. Any deck or shed in a VHFSZ must use Class A fire-rated roofing materials — standard asphalt shingles, untreated wood siding, and exposed wood beams won't pass final inspection. Metal roofing, fiber-cement shingles, and Class A-rated composite materials are common alternatives. Defensible space requirements (clearing vegetation, removing dead branches within 100 feet) also apply, though that's not part of the permit itself — the fire marshal checks it at final. Budget for Class A materials; they cost $2-5 per square foot more than standard options. If you're not sure which zone you're in, the building permit application will flag it during plan review anyway.

How much does a building permit cost in Chico?

Chico uses a valuation-based fee schedule: typically 1.5-2% of project valuation for building permits. A $15,000 deck runs roughly $225-300 in permit fees. Electrical subpermits are flat-rate ($150-250). Roof replacements are usually $300-500 depending on square footage. Accessory structures under 500 sq ft often have a $100-150 flat fee. Call the Building Department or check the city's fee schedule on their website for exact figures — fees change annually and vary by project type.

Can I pull a permit online in Chico?

Partially. Chico's online portal handles routine projects (fence permits, roof replacements, water-heater swaps, minor electrical) over-the-counter if plans are complete and legible. Larger projects (room additions, accessory structures, foundation work) usually require a pre-application meeting and in-person plan submission to avoid rework. The portal lets you track permit status once filed. If you're not sure whether your project qualifies for online filing, call the Building Department — they'll save you a wasted trip.

How long does plan review take in Chico?

Standard residential projects (decks, sheds, additions) typically take 3-4 weeks for initial plan review. If the plans are incomplete or trigger requests for clarification (especially in VHFSZ areas or if soils issues arise), the clock resets. Over-the-counter permits (fences, roof replacements, simple electrical) are approved same-day if complete. You can pay for expedited review — often 1-2 weeks — for an additional fee. Building Department staff can tell you turnaround at the time of submission.

What happens if I build without a permit in Chico?

Code enforcement can issue a Notice to Correct, impose fines (typically $100-1000 per day, per violation), and require you to bring the work into code compliance (including bringing in a licensed engineer to inspect and sign off on what you built). Your homeowner's insurance may deny claims related to unpermitted work. Selling the house becomes harder — title companies often require proof of permits for additions and structural changes. If the work is unsafe (bad wiring, bad foundation), the city can issue a Stop Work order and require demolition. The cost to get it right retroactively (engineer, permits, re-inspection) almost always exceeds the cost of permitting upfront.

Do I need a permit for an ADU in Chico?

Yes, but the process is streamlined under state law (AB 68 and SB 9). ADUs are permitted statewide as-of-right under simplified review. Chico allows one ADU per single-family lot, up to 900 square feet (or 35% of primary dwelling, whichever is smaller), with reduced setback requirements. You still need a building permit, but plan review is typically 2-3 weeks instead of 4+, and design review is minimal. If you're adding an ADU, contact the Planning Department early — zoning may restrict placement, but permitting itself is faster than a traditional addition.

Building Permits in Chico, CA (2026)

Do I need a permit in Chico, California?

Chico's building department is one of the more straightforward in Northern California — they use the current California Building Code without extensive local amendments, and they've invested in a functional online portal for routine permits. That said, Chico's location in the Sierra Nevada foothills and Central Valley means your project's permit requirements depend heavily on geography. A deck in downtown Chico (climate zone 5B, frost depth minimal) gets a different footing calculation than the same deck in the mountain neighborhoods (zone 6B, frost to 30 inches). Fire hazard severity zones — particularly relevant after the 2018 Camp Fire — trigger additional requirements for defensible space, roof materials, and vegetation clearance that don't apply in lower-hazard areas. The good news: owner-builder permits are allowed under California Business and Professions Code Section 7044, though you'll need a licensed contractor for electrical and plumbing work. The faster you confirm your project's specifics with the City of Chico Building Department before breaking ground, the faster permits move.

What's specific to Chico permits

Chico adopts the California Building Code with minimal local variation, which means most code sections you find online apply directly to your project. The department does not reinvent the wheel with custom ordinances — they follow state law and California's building code edition closely. This is actually good news for DIY research: if the CBC says something is allowed, it's allowed in Chico.

Fire hazard severity zones are the wild card. Chico's hillside neighborhoods and mountain properties sit in Very High Fire Hazard Severity Zones (VHFSZ), which trigger stricter requirements for roof materials (Class A fire-rated only), defensible space (minimum 100 feet in some cases), vegetation clearance, and even gutter debris screens. Flatter downtown and midtown areas are typically in Moderate or Local Responsibility Areas. Get the fire zone for your address from the California Department of Forestry and Fire Protection fire hazard map before you finalize plans — if your project is in a VHFSZ, that changes inspections and material specs. Surprisingly, many homeowners don't check this until plan review bounces them.

Frost depth varies dramatically by neighborhood. Downtown Chico and lower-elevation areas experience minimal frost — frost depth is negligible for most residential footings. Mountain properties (elevation 2,500+ feet) regularly see frost to 24-30 inches, which drives deck post and foundation footing depth. The IRC's generic 36-inch minimum doesn't always apply; Chico will ask you to frost-proof based on your specific elevation and local soil conditions. If you're not sure, the building department can give you the frost depth for your address in a 2-minute phone call.

Expansive clay soil is common in the Central Valley portions of Chico's jurisdiction. If your property has clay-heavy soil (which you can confirm with a Phase I ESA or simple digging), foundations, slabs, and pools need special design and compaction. The CBC requires post-and-beam or pier-and-beam construction in some cases, or engineered fill and moisture barriers. Don't assume a standard footing will work; geotechnical reports are relatively cheap insurance.

The Building Department's online permit portal is moderately functional for over-the-counter permits (small jobs, roof replacements, water-heater swaps, fence permits). More complex projects still benefit from a pre-application meeting — building staff will flag code issues before you file formal plans, saving rework. The department processes plan review in 3-4 weeks for standard residential projects; expedited review is available for an additional fee. Processing times slow in fall (fire season) when staff capacity shifts to inspection work in high-fire-hazard areas.

Most common Chico permit projects

These are the projects that generate the most questions and the most rejection letters in Chico. Each has a dedicated guide with local frost depth, fire-zone implications, and specific cost estimates.

Decks

Attached or detached decks over 30 inches above ground, or any deck in a VHFSZ, require permits. Frost depth depends on elevation; downtown Chico typically bottoms out shallow, but mountain properties may need 24-30 inch footings. Decks in fire-hazard zones must use Class A-rated roofing if covered.

Fences

Fences over 6 feet in height, or any fence in a front-yard setback, require a permit. Most residential side and rear fences under 6 feet are exempt. Chico has a flat permit fee; expect turnaround in 1-2 weeks for over-the-counter approval.

Roof replacement

Roof tear-off and replacement requires a permit. If you're in a VHFSZ, you must use Class A fire-rated materials — standard asphalt shingles won't pass final inspection. Plan for additional material cost ($2-5 per sq ft for Class A shingles vs standard). Permits are fast — often over-the-counter — but final inspection takes 2-3 business days.

Electrical work

Any new circuit, outlet, or panel work requires a licensed electrician and an electrical subpermit. California law (B&P Code 7044) does not allow owner-builders to pull electrical permits themselves, even in residential work. Plan on $150-300 for the subpermit.

Room additions

Any new interior square footage — bedroom, bathroom, sunroom — requires a full building permit, foundation inspection, framing inspection, and final. Plan review takes 3-4 weeks. In VHFSZ areas, window and door specifications are tighter (fire-resistant glazing in some cases). Budget $500-1500 in permits alone.

Do I need a building permit in Chico, CA?