California ADU Permit Fees & Cost Calculator

Anaheim’s official fee schedule and miscellaneous-fees pages indicate the city maintains a fee schedule, but the provided search results do not expose an exact ADU-specific permit/plan-check schedule. California ADUs may qualify for impact-fee relief for smaller units, and that statewide baseline should be verified against Anaheim’s current ordinance and fee tables.

Antioch’s official ADU FAQ says ADUs under 750 square feet are exempt from city development impact fees except school district fees, while larger ADUs pay proportional impact fees tied to the primary dwelling size. City department fees are based on project valuation, and Antioch gives an example of about $4,050 in department fees for a 515-square-foot ADU valued at $200,000; exact current fee tables should still be verified with the city and school district.[2][10]

Bakersfield allows ADUs, and the clearest official city fee found is a $500 ADU application fee in the proposed 2024-25 master fee schedule. California’s ADU rules also limit certain local impact fees for smaller ADUs, but Bakersfield’s exact building, plan-check, utility, and school fee treatment should be verified against current city and district fee schedules.

Chula Vista states that ADUs under 750 square feet are exempt from development impact and in-lieu fees, while ADUs 750 square feet and larger are charged proportionately to the primary residence on a square-footage basis. The city’s 2024 fee resolution shows ADU permit-related charges, but the exact live fee schedule should be verified before filing.

Concord publishes a general city fee page and an ADU page, but the exact current ADU fee schedule was not available in the search results. California’s ADU impact-fee baseline applies, and Concord has a city PDF for ADU engineering fees, but the fee amounts themselves need verification from the official documents.

Fontana appears to follow California ADU rules, but the official city fee schedule needed to verify exact permit and impact fees was not available in the provided results. California’s ADU impact-fee baseline applies: impact fees generally cannot be charged for ADUs under 750 sq ft, and for larger ADUs fees must be proportionate to the main dwelling’s square footage relative to the primary residence.[2][8]

Fremont’s official ADU page confirms a separate permit is required for the ADU, but the public page in the provided results does not expose a full fee schedule. For California ADUs, impact fees are waived for units under 750 square feet under state law, and larger ADUs may be subject to city-defined fees that must be verified directly with Fremont.

Fresno appears to charge standard building permit and plan-check fees for ADUs, with school fees handled case-by-case by the relevant school district and California’s ADU impact-fee thresholds applying statewide. The city’s published planning fee schedule indicates ADUs under 750 square feet are not charged development impact fees, while ADUs over 750 square feet pay the multifamily residential rate.

Indio follows California ADU rules and its local ordinance states that ADUs under 750 square feet are exempt from impact fees. Exact permit, plan check, inspection, and utility fee amounts were not clearly published in the provided official materials and should be verified with the city fee schedule or building division.

Irvine allows ADUs, but the exact city fee schedule was not available in the provided results. California’s ADU law limits or exempts certain impact fees, especially for ADUs under 750 square feet, and Orange County offers pre-approved ADU plans that may reduce plan-check effort rather than city fees.

Lancaster appears to follow California’s ADU fee framework, but the exact local fee schedule was not available in the provided results. A city ADU assistance page confirms the city has an ADU program, while California law still requires fee treatment to be verified against current city fee schedules and utility/school district sources.

Long Beach appears to charge standard city plan-check/permit processing fees plus county/school-related charges where applicable, but the official fee schedule page does not clearly isolate ADU-specific dollar amounts in the provided results. California’s ADU fee rules still apply: impact fees are generally waived for ADUs under 750 sq ft, while larger ADUs may trigger proportionate fees, and Long Beach also indicates a 4.5% Technology Surcharge, 4.5% General Plan Surcharge, and a $90 processing fee on each plan check and permit application.

Los Angeles ADU fees are typically project-specific and are charged by LADBS based on construction valuation rather than a single fixed ADU permit fee. California’s ADU impact-fee baseline applies: many ADUs under 750 square feet are exempt from impact fees, while larger ADUs may be charged proportionately; school and utility fees still need project-by-project verification.

Mission Viejo ADUs are subject to California’s statewide fee limits, including a development impact fee exemption for ADUs under 750 sq ft, but the exact City of Mission Viejo fee schedule was not identified in the provided sources. Orange County road fees and California school/impact-fee rules may still affect larger ADUs, so the current city-specific fee amounts should be verified directly with the City and applicable districts/utilities.

Modesto has a city ADU permitting page, but the clearest fee estimate available in the provided sources is a Stanislaus County ADU building-fee estimate used for Modesto-area applications. California’s ADU impact-fee rule applies: ADUs under 750 square feet are exempt from impact fees, while larger ADUs may owe proportionate fees.

Murrieta’s ADU handout confirms ADUs are allowed by-right with a building permit and sets local size/process rules, but the provided sources do not include a verified city fee schedule. California law also limits local impact fees on ADUs under 750 sq ft, and exact Murrieta-adopted fees should be verified in the city’s current fee resolution and utility/school district schedules.

Oakland’s official ADU pages confirm the permit path and some utility requirements, but the provided results do not include an official fee schedule. California law also limits or waives certain ADU impact fees for smaller units, so exact Oakland fees must be verified in the city’s current fee tables and linked utility/school district schedules.

Oxnard requires a building permit and plan check for ADUs, with plan check fees based on valuation. The city publishes development fee schedules, but the exact ADU fee total depends on project type, valuation, and whether California ADU exemptions apply; state law also limits certain impact fees for smaller ADUs.

Riverside allows ADUs and publishes a building permit/plan check fee schedule based on valuation; California’s ADU rules also limit local impact fees for smaller ADUs. Exact project totals still need verification against the current city fee schedule, utility providers, and Riverside Unified School District rules.

Sacramento City uses valuation-based permit fees and a separate planning application fee for ADUs; the City also states that development impact fees are waived for ADUs 749 sq ft and under, consistent with California law. Exact city fee amounts need to be verified from the current fee estimate/formula because the available official pages do not publish a single fixed ADU fee schedule in the search results.

San Bernardino’s official city ADU page confirms plan review is paid at submittal, permit fees are collected before issuance, and a school fee letter is required for structures 501 sq ft and larger. California law also requires proportionate treatment of impact fees for ADUs 750 sq ft or larger, and the city links to its current fee schedule, but the exact ADU fee amounts were not clearly extractable from the available official pages.

San Diego ADU fees typically include permit/plan-check charges, utility connection charges, and possibly school fees for larger units. California SB 13 also requires ADU impact-fee waivers for many smaller ADUs, and San Diego County notes its ADU fee waiver program ended for new qualifying projects after January 9, 2024.[1][9]

San Francisco allows ADUs, but the exact fee total depends on project valuation, scope, and whether the unit is under the California 750 sq ft impact-fee exemption. The city’s official fee schedule confirms valuation-based Department of Building Inspection fees, while California law sets the ADU impact-fee baseline for smaller units and school-fee rules remain district-dependent.[9]

San Jose uses the City building fee schedule and an ADU fee estimator for permitting costs, while California law limits local ADU impact fees for units under 750 square feet. The city’s public ADU pages confirm permit-fee variability by size, but the exact fee schedule was not captured here and should be verified in the City’s current building fee schedule and estimator.

Santa Ana states that ADU projects are subject to application review, permit, and development impact fees, but the city does not publish a simple ADU-specific fee schedule on the pages retrieved here. California law also limits certain ADU impact fees for smaller units, so final charges must be verified with the city, school district, and utilities before filing.

Santa Clarita’s planning fee schedule lists a $400 ADU planning fee, but exact total permit costs still need verification from building, public works, fire, school district, and utility fee schedules. California law also limits ADU development impact fees: ADUs under 750 square feet are exempt, and larger ADUs must be charged proportionally by size.

Santa Rosa approves ADUs through the building permit process and follows California’s ADU fee limits: no impact fees for ADUs under 750 square feet, reduced fees for larger ADUs, and no separate utility connection fees for internal conversion ADUs under 750 square feet. The city’s official fee schedule also shows surcharge percentages applied to permit-related fees, but the exact ADU total depends on project type and must be verified with current permit staff or an itemized permit estimate.

Stockton states that ADU permit fees are calculated at application submittal, and its public ADU flyer says city impact fees do not apply to ADUs under 750 square feet. The city also says ADU plans are available free of charge, but school district developer fees and utility connection fees may still apply depending on the project and service requirements.

Thousand Oaks allows ADUs and JADUs on residentially zoned properties, but the provided results do not include an official city fee schedule. California’s ADU impact-fee baseline applies: no impact fees for ADUs under 750 square feet, and proportional impact fees for ADUs at or above 750 square feet, but exact Thousand Oaks fee amounts still need verification from city fee schedules or staff.

Victorville publishes an updated residential fee kit that includes utility-related development charges such as sewer and regional drainage fees, but the exact ADU-specific permit total is not clear from the available excerpts. California’s ADU rules also limit local impact fees for smaller ADUs, so the most important items to verify are whether the ADU is under 750 sq ft and whether Victorville applies any locally adopted connection or development charges.[1][9]

Visalia states that ADUs and JADUs require a building permit through the City, with plan check completed in 20 calendar days or less for initial submittals and 10 calendar days or less for resubmittals. The city also notes that ADUs under 750 square feet are exempt from impact fees under state law, but exact local fee amounts were not clearly published in the sources reviewed.