Palm Desert Zoning and ADU Guide for Homeowners

Last updated November 13, 2026. Reviewed by the Cash Home Buyers CA team.

Palm Desert’s ADU ordinance, Section 25.34.030 of the Zoning Code, requires the city to approve or deny a complete ministerial application within 60 days. This guide summarizes that section for homeowners: how many units you can build, size and height limits, setbacks, parking, rental rules, fees and what it means for a sale. California ADU law changes often, so confirm current limits with the Planning Department before you design.

Palm Desert ADU rules at a glance

Code section	Palm Desert Municipal Code Section 25.34.030, Accessory Dwelling Units
Single-family lots	One ADU and one JADU on a lot with a proposed or existing single-family dwelling
Multifamily lots	Conversions up to 25% of existing units (at least one); up to two detached ADUs on a proposed multifamily lot, up to eight on an existing one
Detached ADU size (Class 1)	800 square feet of livable space or smaller
Other ADUs (Class 2)	850 sq ft for a studio or one-bedroom; 1,000 sq ft for two or more bedrooms; attached ADUs also limited to 50% of the primary dwelling’s floor area
JADU	No more than 500 sq ft, inside the single-family home, with an efficiency kitchen
Height	Detached ADU up to 16 feet; up to 18 feet near major transit (up to 20 feet to match roof pitch); attached ADU up to 25 feet or the zone limit, whichever is lower
Setbacks	4 feet side and rear; 20-foot front setback for Class 2 ADUs; none for an ADU in the same location and dimensions as an existing structure
Parking	One space per ADU or bedroom, whichever is less, with several exceptions; replacement parking not required when a garage or carport is converted
Review	Completeness decision within 15 business days; approve or deny within 60 days of a complete application

Where the rules come from

The ordinance states its purpose is to allow and regulate ADUs and junior ADUs in compliance with Chapter 13 of Division 1 of Title 7 of the California Government Code. Every ADU and JADU requires both an ADU permit and a building permit, and ministerial applications are approved without discretionary review or a hearing. Because the state revises ADU law regularly, ask Planning whether newer rules override any limit in the city text.

Size and height

A new detached ADU on a single-family lot is limited to 800 square feet of livable space under the first category.

The second category allows 850 square feet for a studio or one-bedroom and 1,000 square feet for two or more bedrooms, and attached ADUs are further limited to half the floor area of the primary dwelling.

A detached ADU may not exceed 16 feet, with up to 18 feet within one-half mile walking distance of a major transit stop or high quality transit corridor and up to two more feet to match the main roof pitch.

Attached ADUs may reach 25 feet or the zone limit, whichever is lower, and no more than two stories.

Setbacks and parking

New ADUs must keep at least 4 feet from side and rear lot lines, and Class 2 ADUs must meet 20-foot front setbacks. No setback is required where the ADU occupies the same location with the same dimensions as an existing structure.

One off-street space is required per ADU or bedroom, whichever is less, and it may be in setback areas or tandem.

No parking is required if the ADU is within one-half mile walking distance of public transit, in a historic district, part of the primary residence or an accessory structure, where on-street permits are required but not offered to the occupant, or within one block of a car share stop. Parking removed for a garage or carport conversion does not have to be replaced.

Owner occupancy and rentals

ADUs are not subject to an owner-occupancy requirement. JADUs generally are: the owner must live in either the main home or the JADU, unless exceptions apply. No ADU or JADU may be rented for fewer than 30 days, and this applies no matter when the unit was created. A JADU requires a recorded deed restriction saying it cannot be sold separately and is limited to its approved size.

Fees and utilities

No impact fee applies to a JADU or to an ADU under 750 square feet, and units under 500 square feet are not subject to school fees. Larger ADUs pay impact fees proportionally to the primary dwelling’s size. A JADU or converted ADU on a single-family lot does not need a separate utility connection, while other ADUs generally do, with connection fees proportionate to the burden on the system.

Design standards

Exterior walls, roof, windows and doors must match the primary dwelling, the roof slope must match the dominant slope, lighting is limited to down-lights, and the ADU needs its own exterior entrance. Interior horizontal dimensions must be at least 10 feet in every direction, with a minimum wall height of 7 feet.

Windows and doors may not have a direct line of sight to an adjoining residence unless screened. An ADU within 600 feet of a property on the California Register of Historic Resources must not be visible from a public right-of-way.

Legalizing an existing unpermitted unit

The city says it will not deny an ADU or JADU application because of a nonconforming zoning condition, building code violation or unpermitted structure that does not threaten public health and safety.

For an unpermitted ADU built before January 1, 2020, the city generally may not deny legalization based on building standards, though it may deny if correction is necessary to meet Health and Safety Code Section 17920.3 standards. Ask Planning what the city would require in your case.

Property tax on new construction

A newly built ADU is generally reassessed as new construction. See our Riverside County property tax guide and ask the assessor about your project.

ADUs, garage conversions and selling a Palm Desert house

Second units and garage conversions are common, and so are the questions they raise at sale. Lenders typically want permitted living area, and an appraiser may not count unpermitted space. Our statewide guide covers seller disclosure of unpermitted work, and the Prop 13 guide covers reassessment on new construction. If your Palm Desert property has a second unit:

• Look up permits and final inspections for the unit.
• Ask the city whether it would approve the structure today.
• Price the plans, corrections and fees to legalize it.
• Weigh that against an as-is sale to a buyer who accepts the unit as it stands.

How to sell a house in Palm Desert

1. Check which structures, additions and bedroom counts on the property are permitted.
2. Collect permits, plans and any city notices.
3. Request a no-obligation cash offer for the house as it stands.
4. Choose your closing date.
5. Close with no repairs, permit cleanup or showings required.

Our local pages cover related situations in Palm Desert, including selling as-is, selling an inherited house and selling during a divorce. See also our Palm Desert page and the Riverside County hub.

Frequently asked questions

How many ADUs can I build in Palm Desert?

On a single-family lot, one ADU and one JADU. Multifamily lots may convert existing space and add detached ADUs within the ordinance limits.

How big can a Palm Desert ADU be?

A new detached ADU in the first category is 800 square feet or less. Other ADUs may be 850 square feet for a studio or one-bedroom and 1,000 for two or more bedrooms, and attached ADUs are limited to 50% of the main home. A JADU is up to 500 square feet.

How long does Palm Desert take to review an ADU?

The city decides completeness within 15 business days and must approve or deny a complete application within 60 days.

Does a Palm Desert ADU need parking?

One space per ADU or bedroom, whichever is less, unless an exception applies such as transit within half a mile or a garage conversion.

Can I rent my Palm Desert ADU short term?

No. ADUs and JADUs may not be rented for fewer than 30 days.

Can I sell my Palm Desert house with an unpermitted ADU or garage conversion?

Yes. You can disclose it and sell as-is, including to a cash buyer. Our statewide guide explains the disclosure rules.

More guides

• We Buy Houses in Palm Desert
• We Buy Houses in Riverside County
• Riverside County Property Tax Guide
• Palm Desert Building Permits Guide
• Palm Desert Code Enforcement Guide
• Indio Building Permits Guide
• La Quinta Building Permits Guide
• All California Guides

Sources

• City of Palm Desert Municipal Code, Section 25.34.030: Accessory Dwelling Units
• California HCD: Accessory Dwelling Units
• City of Palm Desert: Building & Safety

This guide is general information from public sources, not legal advice. Confirm current rules, fees and hours with the city.