California city planning guide
Fresno ADU Guide: Free Plans, Cost Estimator & Permit Process
Fresno gives homeowners more than a rule sheet: five free pre-approved ADU plans, a downloadable construction-cost estimator, an ADU hotline and a direct building-permit workflow. The City also rewrote its ADU code in 2025, so older Fresno articles can now be materially out of date.
Start with the dedicated ADU program
Fresno’s own web pages currently give conflicting Zone Clearance instructions.
The City’s dedicated ADU Program says pre-approved and custom ADU plans no longer require a Zone Clearance and are submitted directly for a Building Permit. A separate general Applications, Forms & Fees page still says a Zone Clearance is required for ADUs and backyard cottages.
Open Fresno’s dedicated ADU Program → · Email the ADU team →
The 2025 code rewrite
Fresno’s current local ADU standards are unusually permissive.
| Planning issue | Current City of Fresno rule | Homeowner check |
|---|---|---|
| Where ADUs are allowed | ADUs may be permitted in zones allowing single-unit or multi-unit residential, mixed-use development, or where a qualifying residential structure exists or is proposed. | First confirm the parcel is actually inside the City of Fresno rather than unincorporated Fresno County. |
| Maximum size | 50% of the average floor area of the primary unit(s) or 1,400 sq. ft., whichever is greater. JADUs remain capped at 500 sq. ft. | Do not copy older Fresno summaries showing smaller local caps. Confirm the exact design still complies with current state and building-code requirements. |
| Height | Underlying district height or 30 ft., whichever is greater. ADUs may be multiple stories or above the ground floor. | Building separation, fire, structural and neighborhood/site constraints still matter even when zoning height allows the design. |
| Side/rear setbacks | Underlying district or 4 ft., whichever is less. Properties abutting alleys have special rules. | Recorded utility easements can require more space than the zoning setback. |
| Front placement | The underlying front setback applies, but it cannot preclude development of at least an 800-sq.-ft. ADU. | Do not assume a front-yard condition automatically kills the project. |
| Parking | No ADU parking is required. | Keep primary-dwelling parking and fire/access requirements separate from the ADU parking rule. |
| Rental | ADU/JADU rentals must be for 30 consecutive days or longer. | Do not plan a Fresno ADU as a nightly or weekend short-term rental. |
Fresno Municipal Code §15-2754 was repealed and replaced by Ordinance 2025-024, effective July 27, 2025. The code expressly says current State ADU Law controls if a conflict exists.
Five free construction-plan choices
Start with footprint and household need—not just the prettiest elevation.
Fresno currently publishes five pre-approved plan families. Each can be selected with Craftsman, Contemporary or Gable exterior styling. The construction drawings include solar-panel plans, but the City still reviews the property-specific plot plan, access, utilities and fire conditions.
Plan 1
340 sq. ft.
Studio · 1 bath
20 × 17 ft.
Smallest footprint; useful when yard area or budget is the main constraint.
Plan 2
499 sq. ft.
1 bed · 1 bath
30 × 17 ft.
Compact one-bedroom option that stays below 500 sq. ft.
Plan 3
625 sq. ft.
1 or 2 bed · 1 bath
25 × 25 ft.
Square footprint with flexible one- or two-bedroom configuration.
Plan 4
625-sq.-ft. ADU
1 or 2 bed · 1 bath
Plan 3 over garage
Useful when preserving garage/parking or stacking uses is part of the site strategy.
Plan 5
1,015 sq. ft.
3 bed · 2 bath
41 × 26 ft.
Largest City stock plan and the only current three-bedroom option.
Compare Fresno’s official plans, floorplans and elevations →
Use the City estimator as a planning baseline
Fresno gives homeowners a downloadable pre-approved ADU cost estimator.
City estimator
The ADU Program provides a downloadable construction-cost estimator for the pre-approved plans. Use it to structure the budget before collecting contractor quotes.
Then stress-test the estimate
Add site work, utility upgrades, fire protection, financing, demolition, unusual soils/access conditions and contingency rather than treating the stock-plan estimate as a guaranteed project price.
Compare with our calculator
Use the same square footage and known site allowances in the ADU Project Planner calculator so you can compare a City-plan estimate with your all-in planning budget.
Permit sequence
A practical Fresno ADU workflow
Confirm City of Fresno jurisdiction
A Fresno mailing address is not enough. Verify that the parcel is inside incorporated Fresno and that the City—not Fresno County—is the permitting authority.
Choose pre-approved or custom design
Compare the five City plans with your required bedrooms, footprint, utilities and access. A custom design can use Fresno’s broader current code but requires its own complete design package.
Build the property plot plan
Document property lines, existing structures, the proposed ADU, setbacks, access, easements, utilities and fire conditions. Fresno’s permit packet includes an example plot plan and submittal requirements.
Confirm the current application route
The dedicated ADU Program says both pre-approved and custom ADUs now go directly to Building Permit without Zone Clearance. Because another City page still carries older language, confirm the route with the ADU Hotline before submission.
Submit through Accela Citizen Access
Upload the permit package, track status/comments and due dates, submit backchecks, access invoices and pay fees through the City’s online permitting system.
Resolve plan check, permit and inspections
Address correction comments, obtain the construction permit, then use Building & Safety inspection scheduling through final approval.
A Fresno-specific option
A tiny house on wheels can qualify as a Fresno ADU—but not by simply parking a trailer in the yard.
Current Fresno Municipal Code §15-2754 says a Tiny House on Wheels may be considered an ADU if it satisfies the ADU rules and is ANSI certified, placed on an engineered foundation system, and skirted to enclose the space between the home and the ground.
Fees, utilities & fire
Separate four different cost buckets before you call anything a “permit fee.”
Plan check / building fees
Fresno’s 2025 Prohousing application states that the City waives plan-check fees for applicants using its pre-approved standard ADU plans. Verify the current fee schedule and eligibility at the time you apply.
Impact fees
Under the March 2026 HCD handbook, an ADU with 750 sq. ft. or less of interior livable space is exempt from local-agency, special-district and water-corporation impact fees. Larger ADUs can be charged proportionately.
Water / sewer connections
Fresno Public Utilities says connection fees vary by property and service/meter size and are based on the City’s annually updated Master Fee Schedule. Request a project-specific estimate rather than copying a prior project’s number.
Official contacts
Use the dedicated ADU team before paying to solve an uncertainty.
ADU Hotline
Best starting point for pre-approved plans and the current ADU submittal route.
City Hall: 2600 Fresno Street, Fresno, CA 93721. Public Utilities: 559-621-8600. Fire: 559-621-4181.
Before your first City call
Build this Fresno property file first.
- Property address and assessor parcel number
- Proof the parcel is inside City of Fresno jurisdiction
- Current zoning and any overlay/easement information
- Main-house floor area
- Existing structure footprints and garage conditions
- Side, rear and front dimensions
- Selected City plan number/elevation or custom concept
- Utility meter/service locations
- Water and sewer connection assumptions
- Fire hydrant/access notes if known
- Target ADU square footage and bedrooms
- Questions requiring written City confirmation
Continue planning
Turn the Fresno rules into a property-specific plan.
Official sources
Re-check these before design, purchase or permit submission.
- City of Fresno ADU Program — plans, permit packet, guidebook, estimator and hotline
- Fresno Municipal Code §15-2754 — current local ADU ordinance
- City of Fresno ADU Permit Application Packet
- Fresno Building & Safety / Accela services
- Fresno Public Utilities planning and engineering FAQs
- California HCD ADU Handbook — updated March 2026
Planning disclaimer: This guide organizes public information for homeowner research. It is not a parcel approval, legal opinion, architectural service, engineering service or construction estimate. Fresno requirements and fees can change; verify the current rule and application path with the responsible agency before relying on it.