California ADU rules · Kings County
Can I Build an ADU in Corcoran?
Yes — you can build an ADU in Corcoran. California's statewide ADU law requires every city, including Corcoran, to approve a qualifying accessory dwelling unit by right, plus a junior ADU (JADU) on a single-family lot. What varies city to city are the local specifics below.
Can you build one?
ADUs allowed
Local ruleConditional
ADUs up to 960 sq ft are ministerial; ADUs >960 sq ft (up to 1,200 sq ft) require a conditional use permit.
Units on a single-family lot
Local rule1 ADU per single-family detached lot
Only one ADU allowed per single-family detached lot; no local JADU provision.
Units on a multifamily lot
CA state lawConversion ADUs (≥1, up to 25% of units) + up to 8 detached
Conversions of non-livable space (at least 1, or up to 25% of existing units) plus up to 8 detached ADUs on a lot with existing multifamily — never exceeding the number of existing units. JADUs are single-family only.
Junior ADU (JADU)
CA state lawAllowed
Up to 500 sq ft, within the walls of an existing single-family home (single-family lots only).
Size & height
Max detached ADU size
Local rule1,200 sq ft
Up to 960 sq ft by administrative permit; up to 1,200 sq ft by conditional use permit, but never more than the principal dwelling’s gross floor area.
Max attached ADU size
Local rule≤960 sq ft by administrative permit; up to 1,200 sq ft by conditional use permit, but not to exceed the principal dwelling’s gross floor area
Same rule as detached; both capped by principal dwelling size.
Guaranteed minimum size
CA state law800 sq ft
An 800 sq ft ADU must be allowed regardless of FAR/lot-coverage caps; a city also cannot cap an attached ADU below 850 sq ft (1,000 for 2+ bedrooms).
Max JADU size
CA state law500 sq ft
Max height
Local rule35 ft
ADUs may not exceed the principal structure’s height; 35 ft is typical max in most residential districts.
Setbacks
Side setback
CA state law4 ft
A city cannot require more than 4 ft side or rear setback; conversions of existing structures are exempt.
Rear setback
CA state law4 ft
Front setback
Local ruleSame as principal dwelling (e.g., 40 ft from street, 100 ft from major roadways in RSF-1)
Front setback matches principal dwelling; varies by zoning district.
Separation from main house
CA state lawNone required
No statewide separation requirement between the ADU and the primary dwelling.
Parking
Parking required
CA state lawUp to 1 space
At most 1 space per ADU (or per bedroom, whichever is less) — and waived in the common cases below.
Transit parking exemption
CA state lawYes — no parking required near transit & for conversions
No parking may be required within ½ mi walking distance of transit, in a historic district, for an ADU within an existing structure, within one block of car-share, or in certain permit-parking areas.
Garage-conversion replacement parking
CA state lawNot required
When a garage/carport is demolished or converted to build an ADU, replacement parking cannot be required.
Approval, timeline & cost
Approval path
CA state lawMinisterial (by right)
No public hearing or discretionary design review for a qualifying ADU.
Approval timeline
CA state law60 days
The agency must act within 60 days of a complete application — and the ADU is deemed approved if it does not.
Owner-occupancy
Local ruleOnly for a JADU
Local code recites an owner-occupancy requirement, but California Gov. Code § 66315 bars owner-occupancy requirements for ADUs — enforceable for JADUs only. Verify the JADU covenant with the city.
Impact-fee waiver
CA state lawWaived under 750 sq ft
An ADU of 750 sq ft or less pays no impact fees (the 750 sq ft threshold itself is exempt under § 66311.5); larger ADUs pay fees proportional to the primary dwelling. JADUs (≤ 500 sq ft) are exempt.
Permits required
Local ruleAdministrative permit (≤960 sq ft), Conditional use permit (>960 sq ft up to 1,200 sq ft)
Permit type depends on ADU size.
Corcoran requires a conditional use permit for ADUs larger than 960 sq ft (up to 1,200 sq ft) and mandates owner occupancy in either the main home or ADU. Setbacks and height limits match those for the principal dwelling, and two off-street parking spaces are required for each ADU.
Frequently asked questions
Can I build an ADU in Corcoran?
Yes. California's statewide ADU law requires Corcoran to approve a qualifying accessory dwelling unit ministerial (by right), plus a junior ADU (JADU) on a single-family lot.
How big can an ADU be in Corcoran?
A detached ADU of at least 1,200 sq ft must be allowed, and an ADU of 800 sq ft can never be zoned out by floor-area or lot-coverage limits. A JADU can be up to 500 sq ft.
What are the setback requirements for an ADU in Corcoran?
Side and rear setbacks are limited to 4 ft. Same as principal dwelling (e.g., 40 ft from street, 100 ft from major roadways in RSF-1).
Is parking required for an ADU in Corcoran?
Up to 1 space. No parking can be required within ½ mile of transit, for conversions, or for units inside the primary home. When a garage is converted, replacement parking is not required.
How long does ADU approval take in Corcoran?
A complete application must be acted on within 60 days, with ministerial (by right) — no public hearing or discretionary design review for a qualifying ADU.
Do I have to live on the property to build an ADU in Corcoran?
Owner-occupancy: only for a jadu. ADUs under 750 sq ft are also exempt from impact fees.
Sources
- Corcoran Zoning Code, Section 1040.030 (Ord. 532, adopted 08-22-2024)
- Section 1040.030, Subd. 6(A) (ministerial ≤960 sq ft); Subd. 4(A) (conditional use >960 sq ft)
- Section 1040.030, Subd. 6(A)(1)
- Section 1040.030, Subd. 6(A)(3); Subd. 4(A)(3)
- Section 1040.030, Subd. 6(A)(10)
- Section 1040.030, Subd. 6(A)(2); Area Requirements tables
- Section 1040.030, Subd. 6(A)(6)
- Section 1040.030, Subd. 6(A); Subd. 4(A)
- Cal. Gov. Code §§ 66310–66342 (ADU Law)
- HCD 2025 Accessory Dwelling Unit Handbook
- Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)
- Cal. Gov. Code § 66333 (junior ADUs)
- Cal. Gov. Code § 66321 (size minimums & height)
- Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)
- Cal. Gov. Code § 66314 (local ordinance standards)
- Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)
- Cal. Gov. Code § 66311.5 (impact fees: none for an ADU ≤ 750 sq ft or JADU ≤ 500 sq ft)
Last updated 2026-06-25. This is an AI-assisted summary of Corcoran's ADU rules, drawn from its published ordinance and California ADU law — general information, not legal advice, and it may be incomplete or out of date. Verify the controlling rule for your specific parcel with Corcoran Planning before relying on it.
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