Building permits in Riverside County, California
Find the right authority before you build. Riverside County permitting follows California law — here is exactly who issues the permit and where to start.
County + cities (mixed)
Riverside County Transportation & Land Management Agency (TLMA) — Building and Safety Division
The Riverside County Building and Safety Division, part of the Transportation & Land Management Agency, issues permits, plan checks and inspections for new construction in the county’s unincorporated areas. The county’s 28 incorporated cities (Riverside, Moreno Valley, Corona, Temecula, etc.) operate their own building departments.
Open the official permit portal →
Unincorporated-area permit applications are submitted through the PLUS Online portal (rivcoplus.org).
Check a home project's permit in Riverside County, California
Select a project to see its California permit rule. Whether the county or your city issues it depends on incorporation status — see the authority note above.
California
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🏠 Accessory Dwelling Unit (ADU) permit fee in California
Permit requiredGenerally allowedcity authority
Permit fee range
Permit and plan-check fees set by the local jurisdiction; state law limits impact fees on ADUs. Verify with the city building department.
Typical timeline
~3–6 months for full plan review; many cities offer pre-approved plans or over-the-counter review.
Setback
State standard: 4 ft side/rear setback; local front/side yards still apply.
Exempt if
By-right up to 1,200 sq ft (≤800 sq ft for a 1-bedroom unit) under state law.
Exempt criteria: None — ADUs always require a building permit.
State law (Gov. Code §65852.2) requires cities to approve ADUs ministerially by right in most zones; local design review is limited to objective standards. Local fees, setbacks, and coastal/historic overlays still apply.
Official sources: CA Dept. of Housing & Community Development — Accessory Dwelling Units (ADU/JADU) · Los Angeles Dept. of Building & Safety
Representative cities for California: Los Angeles, San Francisco, San Diego.
All 20 project fee ranges in California
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Permit and plan-check fees set by the local jurisdiction; state law limits impact fees on ADUs. Verify with the city building department. | allowed |
| 🪵 Deck / Porch | conditional | city | Set by the city — typically a flat fee plus a valuation-based fee. Verify with the city building department. | allowed |
| 🧱 Fence / Wall | conditional | city | Usually no building permit under the height threshold; zoning setback rules apply. Verify locally. | allowed |
| 🛖 Shed / Outbuilding | conditional | city | No fee under the exemption; a permit fee applies if over the threshold. | allowed |
| 🪜 Basement Finish | yes | city | Valuation-based building permit fee. Verify with the city building department. | allowed |
| 🚗 Garage / Carport | yes | city | Valuation-based fee; flat plus per-square-foot. Verify with the city building department. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Electrical permit fee set by the city; state law requires streamlined review for agencies above 50,000 population. | allowed |
| 🌡️ HVAC Replacement | yes | city | Mechanical permit fee set by the city. Verify with the city building department. | allowed |
| 🍳 Kitchen Remodel | yes | city | Building + electrical + plumbing permit fees. Verify with the city building department. | allowed |
| 🛁 Bathroom Remodel | yes | city | Building + plumbing + electrical fees. Verify with the city building department. | allowed |
| 🏗️ Room Addition | yes | city | Valuation-based building permit; impact fees may apply. Verify with the city building department. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Permit fee if changing the opening; in-kind swap is often Over-the-Counter. | allowed |
| 🏘️ Roof Replacement | conditional | city | Roofing permit fee set by the city; in-kind shingle re-roof may be Over-the-Counter. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | No building permit for private flatwork; a right-of-way/curb cut needs a separate permit. | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Building permit + electrical; fee set by the city. Verify with the city building department. | allowed |
| 🧱 Retaining Wall | conditional | city | No fee under the exemption; a permit applies if over the threshold. | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set by the city/county building department; verify locally. | allowed |
| 🚰 Septic System | yes | county | Septic permit fees set by the local environmental health / wastewater agency; verify locally. | allowed |
| 🔌 EV Charger | conditional | city | Electrical permit fee set by the city; California law requires an expedited review process for EV charging stations. | allowed |
| ⚡ Standby Generator | yes | city | Electrical (and often mechanical/gas) permit fee set by the city; verify locally. | allowed |
Permit cheat-sheet (California rules)
| Project | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | Permit required | city | Permit and plan-check fees set by the local jurisdiction; state law limits impact fees on ADUs. Verify with the city building department. | ~3–6 months for full plan review; many cities offer pre-approved plans or over-the-counter review. | Generally allowed | State law (Gov. Code §65852.2) requires cities to approve ADUs ministerially by right in most zones; local design review is limited to objective standards. Local fees, setbacks, and coastal/historic overlays still apply. Exempt: By-right up to 1,200 sq ft (≤800 sq ft for a 1-bedroom unit) under state law. |
| 🪵 Deck / Porch | Conditional | city | Set by the city — typically a flat fee plus a valuation-based fee. Verify with the city building department. | Same-day Over-the-Counter for low decks (SF); 2–4 weeks elsewhere. | Generally allowed | Attached decks and any deck over 30 in above grade need a permit. SF issues Over-the-Counter permits for decks less than 10 ft above grade that meet setbacks. Exempt: Decks over 30 in (760 mm) above grade require a permit; lower decks are often exempt. |
| 🧱 Fence / Wall | Conditional | city | Usually no building permit under the height threshold; zoning setback rules apply. Verify locally. | SF: Over-the-Counter same day for fences over the threshold. | Generally allowed | Height and front-yard limits are set by local zoning; masonry or sight-obstruction fences near intersections may need review. HOA covenants may also apply. Exempt: No permit for fences under ~6 ft in side/rear yards (SF: ≤6 ft side/rear, ≤3 ft front exempt). |
| 🛖 Shed / Outbuilding | Conditional | city | No fee under the exemption; a permit fee applies if over the threshold. | Over-the-Counter / same day where a permit is required. | Generally allowed | Larger or occupied/serviced sheds require a building permit. Check local setbacks and HOA rules. Exempt: One-story detached accessory structure ≤120 sq ft is exempt (CBC R105.2). |
| 🪜 Basement Finish | Permit required | city | Valuation-based building permit fee. Verify with the city building department. | 2–6 weeks. | Generally allowed | Finishing a basement adds habitable space and triggers egress requirements (CBC R310); a sleeping room needs a code-compliant egress window. Exempt: N/A |
| 🚗 Garage / Carport | Permit required | city | Valuation-based fee; flat plus per-square-foot. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new detached or attached garage requires a full building permit; conversions of an existing, legally established garage may be exempt if no structural change occurs. Exempt: N/A |
| ☀️ Rooftop Solar PV | Permit required | city | Electrical permit fee set by the city; state law requires streamlined review for agencies above 50,000 population. | Streamlined (often 1–3 days via SolarAPP+ where adopted); 2–4 weeks otherwise. | Generally allowed | Rooftop PV requires an electrical permit. California requires local agencies above 50,000 population to provide streamlined solar permitting. Exempt: N/A |
| 🌡️ HVAC Replacement | Permit required | city | Mechanical permit fee set by the city. Verify with the city building department. | 1–2 weeks. | Generally allowed | Furnace, AC, or heat-pump replacement requires a mechanical permit and California Title 24 energy compliance. Exempt: N/A |
| 🍳 Kitchen Remodel | Permit required | city | Building + electrical + plumbing permit fees. Verify with the city building department. | 2–6 weeks. | Generally allowed | Moving plumbing/electrical or walls triggers permits; California Title 24 appliance and ventilation requirements apply. Exempt: N/A |
| 🛁 Bathroom Remodel | Permit required | city | Building + plumbing + electrical fees. Verify with the city building department. | 2–6 weeks. | Generally allowed | Ventilation (Title 24) and waterproofing are required; relocating plumbing needs permits. Exempt: N/A |
| 🏗️ Room Addition | Permit required | city | Valuation-based building permit; impact fees may apply. Verify with the city building department. | 3–8 weeks. | Generally allowed | Expanding the footprint requires full plan review, zoning compliance with setbacks, and Title 24. Exempt: N/A |
| 🪟 Window / Door Replacement | Conditional | city | Permit fee if changing the opening; in-kind swap is often Over-the-Counter. | SF: same-day Over-the-Counter in-kind replacement. | Generally allowed | Changing the opening size or adding egress windows requires a permit; replacement must meet the energy code. Exempt: In-kind replacement (same size/location) typically needs no permit. |
| 🏘️ Roof Replacement | Conditional | city | Roofing permit fee set by the city; in-kind shingle re-roof may be Over-the-Counter. | SF: same-day Over-the-Counter reroofing. | Generally allowed | Re-roofing usually requires a permit; structural deck replacement triggers a full building permit. Exempt: Tear-off / re-roof is generally permitted work. |
| 🅿️ Driveway / Parking Pad | Conditional | city | No building permit for private flatwork; a right-of-way/curb cut needs a separate permit. | Varies. | Generally allowed | A curb cut or work in the public right-of-way requires a separate permit from the city / public works. Exempt: N/A |
| 🏊 Swimming Pool / Spa | Permit required | city | Building permit + electrical; fee set by the city. Verify with the city building department. | 3–8 weeks. | Generally allowed | Pools require a permit and a compliant barrier (CBC Chapter 42 / Health & Safety Code §115920): self-closing/self-latching gate and alarms. Exempt: N/A |
| 🧱 Retaining Wall | Conditional | city | No fee under the exemption; a permit applies if over the threshold. | 2–4 weeks if required. | Generally allowed | Walls over 4 ft or supporting a surcharge (deck, vehicle, structure) require design and a permit. Exempt: Retaining walls ≤4 ft (measured bottom of footing to top), not supporting a surcharge, are exempt (CBC R105.2). |
| 💥 Demolition / Teardown | Permit required | city | Demolition permit fee set by the city/county building department; verify locally. | — | Generally allowed | A full teardown or major strip-out requires a demolition (building) permit from the city or county building department. Demolition permits commonly require proof of utility disconnects (water, gas, electric, sewer) and may require asbestos/lead-paint clearance for older homes before work begins. Unincorporated areas are permitted by the county. |
| 🚰 Septic System | Permit required | county | Septic permit fees set by the local environmental health / wastewater agency; verify locally. | — | Generally allowed | New or replacement onsite wastewater (septic) systems require a permit from the local environmental health department or regional water quality control board under the State Water Board OWTS Policy. Engineered design and a site/percolation evaluation are typically required. Local agencies implement the program; verify with your county environmental health department. |
| 🔌 EV Charger | Conditional | city | Electrical permit fee set by the city; California law requires an expedited review process for EV charging stations. | — | Generally allowed | A home EV charging station needs an electrical permit (dedicated 240V circuit and wall unit). California (AB 1236) requires cities to provide an expedited, often online, permitting process for residential EVSE; some installations may qualify under a local streamlined path. Work must meet the NEC. |
| ⚡ Standby Generator | Permit required | city | Electrical (and often mechanical/gas) permit fee set by the city; verify locally. | — | Generally allowed | A permanently installed standby generator with a transfer switch and fuel (gas/propane) line requires electrical and often mechanical/gas permits, plus inspection. Setback, noise, and carbon-monoxide rules may apply, and HOAs may restrict installation. Verify setback and fuel-line rules with the city building department. |
Frequently asked questions
Who issues building permits in Riverside County, California?
Riverside County Transportation & Land Management Agency (TLMA) — Building and Safety Division is the permitting authority for Riverside County. Permitting is split — cities issue for incorporated areas, the county for unincorporated areas. Start at the official portal linked above.
Do I go to the county or my city for a building permit in Riverside County?
Permitting is split — cities issue for incorporated areas, the county for unincorporated areas.
What home projects need a permit in Riverside County?
The same project types shown in the cheat-sheet above (ADU, deck, fence, shed, solar, and more) — rules follow California state law. Whether the county or your city issues it depends on your property's incorporation status.
How do I apply for a permit in Riverside County?
Use the official permit portal linked above. Most offices accept online submissions; have your plans, site information, and contractor details ready before applying.