What happens if you skip the permit (and you needed one)
- Stop-work orders carry $500–$1,000 fines in Clovis, plus the city can issue a Notice of Violation requiring removal or forced legalization at double the permit fee (typically $10,000–$15,000 total).
- Title insurance companies and lenders will refuse to finance or insure a home with an unpermitted ADU; refinancing becomes impossible until the unit is either demolished or formally permitted and inspected retroactively ($8,000–$18,000 for retrofit inspection and code compliance work).
- Resale disclosure: California mandates disclosure of unpermitted work via the TDS (Transfer Disclosure Statement); buyers can negotiate 20-30% price reductions or demand removal before closing.
- Code enforcement complaints from neighbors trigger enforcement investigation; Clovis has an active complaint-driven inspection program for unpermitted rentals, and violations can accumulate at $200–$500 per day.
Clovis ADU permits — the key details
California Government Code 65852.2 (as amended by AB 881, effective January 1, 2023) mandates that cities allow one ADU and one junior ADU per single-family lot without discretionary approval or conditional-use permits. Clovis adopted Local Ordinance Chapter 17.130 in compliance, which removes most zoning barriers to ADUs. The city's key requirement: all ADUs must be permitted through the Building Department using the standard permit application (Form BP-1) plus a completed ADU checklist and site plan showing lot lines, setbacks, utility connections, egress windows, and parking (if required by lot size). The 60-day AB 671 timeline applies to residential projects with an assessed value under $200,000, which covers most detached ADUs (15x20 footprint and smaller). Anything larger or more complex (second-story, complex utilities, shared foundation) may exceed the 60-day window, but Clovis must still provide a deadline and notify you in writing if additional time is needed.
Setback rules are where Clovis ADUs often stumble. A detached ADU must maintain 5 feet from side property lines and 15 feet from the rear line (same as a main house accessory building). This sounds manageable until your lot is only 50 feet wide — then two detached ADUs won't fit side by side, and a single 20-foot-wide unit leaves no margin for error. Clovis allows relaxation of setbacks under state law (AB 881 Section 65852.2(d)(1)(B)), but only by variance or conditional-use permit, which defeats the 'streamlined' promise. The practical workaround: garage conversion or JADU (junior ADU within the main house) — both skip the setback problem. Above-garage units (built on top of an existing attached garage) may not trigger setback issues if the garage itself was legally sited; verify the main house's original permit to confirm. A 600-square-foot above-garage ADU in Clovis is typically faster than a detached unit because it reuses the existing foundation and avoids setback redesign.
Utilities and separate connections are a major plan-review item in Clovis. Government Code 65852.2(f) allows shared utility infrastructure (water, sewer, gas) with the main house if the ADU does not exceed 1,200 square feet (or 25% of the main house, whichever is smaller). Clovis requires a line drawing showing the water meter location (main house vs. ADU), sewer lateral connection points, and gas line routing. If you're splitting existing utilities (one meter, two units), the city will require a plumber's licensed plan and sign-off; if you're installing a new separate meter, you'll need to coordinate with Clovis Water and Power Department, which can add 4-6 weeks to permitting. Many applicants assume shared utilities mean 'free,' but Clovis still requires a licensed plumber to design and certify the connection, costing $1,500–$3,000. Detached ADUs almost always trigger separate sewer laterals, adding $2,000–$5,000 to the total project cost and extending the utility review phase.
Owner-builder eligibility is a major advantage in Clovis ADU work. California Business and Professions Code Section 7044 allows an owner-builder to obtain a permit for property they own (or will own) if they are not engaging in 'business.' A detached ADU that you plan to occupy or rent qualifies as owner-builder work, meaning you can pull the permit in your name without hiring a contractor for framing and structural work. However, electrical and plumbing subcontractors must be licensed (C-10 contractors); you cannot do these trades yourself. Plan-check fees for owner-builder ADUs in Clovis are the same as contractor-pulled permits ($500–$1,200), but you avoid the 3-5% general contractor markup on material and labor. Garage conversions and JADUs — especially those sharing utilities — may trigger additional mechanical/electrical/plumbing review, adding $300–$700 to the plan-check fee because the city reviews code compliance for shared infrastructure.
Parking and zoning waivers in Clovis are nearly automatic for ADUs thanks to AB 881. The state law waives off-street parking requirements for ADUs located within half a mile of public transit (Clovis Dial-A-Ride serves most neighborhoods) or on a lot where the primary dwelling is not required to provide parking (rare in Clovis, but applies downtown). For most residential lots, Clovis does not require additional parking for the ADU itself under local ordinance — a major shift from conventional zoning. However, if your lot cannot physically accommodate a detached ADU, a garage, and reasonable maneuvering, the city may require a parking variance, which adds 6-8 weeks to the timeline. The ADU checklist explicitly asks 'does the lot support the ADU plus existing parking?' — if you answer no and request a waiver, the city forwards the application to the Planning Department for a categorical exemption review (CEQA). This is not a discretionary approval, but it does require extra documentation and two-step sign-off, not just a building permit.
Three Clovis accessory dwelling unit (adu) scenarios
Central Valley expansive clay and Clovis ADU foundations
Clovis sits on the eastern edge of the San Joaquin Valley, where many lots are underlain by expansive clay soils (primarily montmorillonite) that swell when wet and shrink when dry. The city's International Building Code (IBC 2022, adopted 2024) and local amendments require a soil engineer's report for any foundation in expansive soil if the projected settlement or heave exceeds 1 inch over the structure's life. Most detached ADUs in Clovis (especially on lots with older main houses that pre-date soil-report requirements) trigger a soils report — costs $600–$1,200 — adding 1-2 weeks to plan review while the geotechnical engineer signs off on post-tensioned slab, specific reinforcement, or moisture barriers beneath the structure.
The practical implication: when you submit your detached ADU application, Clovis building staff will ask, 'Is the main house on a conventional slab or post-tensioned?' If the main house is post-tensioned (likely, given when it was built), your ADU slab should match for consistency. This triggers a slab engineer recommendation for isolation (post-tensioning) costing an extra $800–$1,500 in foundation work. Above-garage units and JADUs avoid this issue because they reuse the existing foundation or sit entirely within the main house.
Clovis Water and Power utility coordination timeline
A frequent permit-processing bottleneck in Clovis: separate water meter installation for a detached ADU. Clovis Water and Power (the city's municipal utility) must locate and approve the new meter location, run a new service line from the main street main, and install the meter. This is not a building permit task; it's a separate utility coordination that Clovis building staff will flag in the plan-check comments. You must contact Clovis Water and Power 2-3 weeks after permit issuance to request a service-line design and get on the utility's queue. Many applicants assume 'the city' handles this; in fact, the building permit only gives you permission to build; the utility connection must be arranged and approved separately. A typical service-line installation takes 4-8 weeks from utility design approval to meter installation. This means your total project timeline isn't 60 days; it's 60 days for building permit plan review plus 4-8 weeks for utility coordination, pushing you to 16-20 weeks from application to construction start.
1033 Fifth Street, Clovis, CA 93612
Phone: (559) 324-2000 (main line); ask for Building & Safety Division | https://www.clovis.ca.us/government/departments/community-development/building-permits (verify online submission availability with city)
Monday–Friday, 8 AM – 5 PM (closed weekends and city holidays)
Common questions
Does California AB 881 mean Clovis has to approve my ADU without city review?
No. AB 881 removes discretionary approval (conditional-use permits, variance requirements) for most ADUs and JADUs, but it does not eliminate the building permit or plan review. Clovis must still issue a building permit and conduct a 60-day plan review (per AB 671) to verify code compliance. The streamlined part is that the city cannot deny your ADU for zoning reasons; it can only deny it if it violates the building code (IRC, electrical code, plumbing code, etc.) or setback/lot size thresholds. If your lot is too small (under 3,000 sq ft) or your setbacks don't work, Clovis can deny the ADU — but this is rare in Clovis because the city's ordinance allows ADUs on most lots.
Can I rent out my ADU immediately after the final inspection in Clovis?
Yes, once Clovis issues a final Certificate of Occupancy (CO) or final building inspection sign-off, you can occupy or rent the ADU. There is no owner-occupancy requirement in the main house; AB 881 eliminated that. However, you must follow Clovis's rental licensing and tax requirements: rental properties in Clovis must be registered with the city (Form BD-5, nominal fee), and rental income is taxable. Some HOAs or deed restrictions (separate from city code) may prohibit rentals; check your CC&Rs before assuming you can rent.
What is the difference between a junior ADU (JADU) and a standard ADU in Clovis?
A junior ADU (Government Code 65852.22) is entirely within the existing primary dwelling and cannot exceed 500 sq ft or 25% of the main house size (whichever is smaller). It has a separate bedroom and bathroom but may share a kitchen with the main house or have a separate kitchenette. A standard ADU can be detached, above-garage, or within the main house, and can be up to 1,200 sq ft (or 25% of the main house, whichever is smaller). A JADU is faster to permit because it requires no new foundation or exterior work, but it's more compact. A standard ADU gives you more space and flexibility but requires more construction and longer plan review.
If I hire a contractor to build my ADU, does the permit fee change?
No. The permit fee in Clovis is based on the project valuation (estimated cost), not on whether you pull the permit as owner-builder or contractor. A $150,000 ADU project costs the same permit fee ($800–$1,200) whether a general contractor or owner-builder pulls the permit. However, contractor-pulled permits sometimes trigger additional liability-insurance review, adding $100–$200 to the plan-check fee. The real savings with owner-builder status is labor: you avoid the general contractor's 15–25% markup on labor and materials, which can save $8,000–$15,000 on a typical ADU project.
Do I need a separate utility bill/meter for the ADU in Clovis?
For water and sewer, yes — Clovis requires a separate metering setup for billing purposes. You can share the water line and sewer lateral with the main house (under Government Code 65852.2(f)), but Clovis installs a separate meter to track the ADU's consumption for billing. For gas and electricity, you may share the main line with a sub-meter, or install a separate service — the choice is yours and depends on future resale/refinancing plans. A sub-metered electric/gas setup costs $800–$1,500; a fully separate service costs $2,000–$3,500. Shared utilities do NOT reduce permit fees or timelines; the utility-coordination work is the same.
How long does it actually take to get a building permit for an ADU in Clovis?
Clovis's 60-day plan-review clock (AB 671) starts when you submit a complete application. In practice, expect 60–90 days for permit issuance if your first submission is complete (no resubmittals). If you miss something (missing MEP plans, incomplete survey, setback analysis unclear), you get one 60-day extension notice and must resubmit; this brings you to 120–150 days. After permit issuance, add 4–6 weeks for utility coordination (water meter, sewer lateral design). Real project start: 5–6 months from initial application to first inspection.
What if my lot is within a flood zone or has an easement? Does that affect the ADU permit?
Yes. If your lot is in FEMA 100-year floodplain (Zone A or AE), the ADU structure must meet flood-elevation requirements under IBC Section 322 and Clovis floodplain management ordinance — typically flood-proofing to 1 foot above the base flood elevation (BFE). This triggers additional structural and MEP engineering, adding $1,500–$3,000 to design and plan-check costs. If your lot has an easement (utility, drainage, or access), you cannot build a structure within the easement; Clovis verifies this during plan review and may deny the ADU or require a redesign. Check the property deed and get an easement survey before finalizing the ADU site plan.
Can I use a pre-approved ADU design plan to speed up the process in Clovis?
California does not have an official state pre-approved ADU design library; however, private ADU design firms offer stamped plans that comply with the 2022 IBC and state ADU laws. Clovis will accept a third-party stamped plan set, but the plans must be sealed by an engineer or architect licensed in California and must reference Clovis's local amendments (parking waivers, setback rules, soil conditions). A pre-stamped plan set costs $1,500–$3,000 and can save you $500–$800 on local architect fees, but does not automatically shorten the 60-day plan review timeline — Clovis still reviews for code compliance and local consistency. Use pre-approved plans mainly to reduce your upfront design cost, not to speed permitting.
If I demolish my old garage to build a detached ADU, do I need a demolition permit?
Yes. Clovis requires a separate demolition permit for any structure removal, even a small one-story garage. The demolition permit includes asbestos survey requirements (if the garage was built before 1980) and proper waste disposal. Demolition permits in Clovis cost $200–$400 and add 1–2 weeks to the project timeline. Many applicants forget to budget for demolition; do this before the ADU permit so the site is clear for plan review. The building department will flag this during the initial visit if you mention garage removal.
What inspections does Clovis require for an ADU, and in what order?
For a detached ADU, Clovis requires: (1) Foundation/Soils sign-off (after concrete or frost-line work), (2) Framing and rough carpentry, (3) Electrical rough-in, (4) Plumbing rough-in, (5) Mechanical rough-in (HVAC, if applicable), (6) Insulation and drywall, (7) Final electrical, (8) Final plumbing and gas, (9) Final building (roofing, siding, doors, windows, interior finish), and (10) Planning/Development Services sign-off (for site-plan compliance). For a JADU or garage conversion, you skip the foundation inspection but still need framing, MEP rough/final, and final building. Expect 8–10 inspections over 8–12 weeks of construction. Missing an inspection can delay your project by a week; schedule inspections as you complete each phase.