Azusa Zoning and ADU Guide for Homeowners

California Cash Home Buyers

Cash Offer in 24 Hours

No repairs or cleanup
No fees or commissions
Close on your timeline

Selling an Azusa home with an ADU or garage conversion?

Get a straight cash offer, as-is, with no permit cleanup required.

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

Azusa adopted Ordinance 2024-08 on December 2, 2024, setting local rules for accessory dwelling units and junior ADUs, and it says an application is deemed approved if the city does not act within 60 days of a complete submittal. This guide summarizes the ordinance for homeowners: how many units you can build, how big they can be, parking, rental rules and what to expect when you sell a house that already has a second unit. Confirm the current text with the city before you design anything.

Azusa ADU rules at a glance

Ordinance	Ordinance 2024-08, passed December 2, 2024 and published December 6, 2024; effective 30 days after adoption
Single-family lots	One ADU or one converted JADU, or one new detached ADU plus one JADU
Multifamily lots	Converted units up to 25 percent of existing units or one, whichever is greater; up to two detached ADUs on a lot with a proposed multifamily dwelling, or up to eight on a lot with an existing one
JADU	Up to 500 square feet, inside a single-family home, with an efficiency kitchen
Limited detached ADU	800 square feet or smaller
Larger ADUs	Up to 850 square feet for a studio or one bedroom and 1,000 square feet for two bedrooms; attached ADUs are limited to 50 percent of the existing home
Height	Detached 16 feet, or 18 feet near transit and up to 20 feet to match a roof pitch; attached 25 feet or the zone limit, whichever is lower
Review	Ministerial; approved or denied within 60 days of a complete application, otherwise deemed approved

Where ADUs are allowed

The ordinance allows ADUs in residential zones and mixed-use zones that permit single-family or multifamily dwellings. A junior ADU is limited to lots zoned for single-family homes and must be located entirely within an existing or proposed single-family structure, which can include an attached garage. A JADU needs an efficiency kitchen and either its own bathroom or shared sanitation with an interior entrance.

Setbacks and size

For a building-permit-only conversion or a limited detached ADU, side and rear setbacks must be sufficient for fire and safety, and at least 4 feet for the limited detached type.

The larger ADU category lists a 40-foot front setback with 4-foot side and rear setbacks, and no new setback is required when an ADU is built in the same location and to the same dimensions as an existing structure.

The ordinance also says percentage-based limits, floor area ratio, front setback, lot coverage or open-space rules cannot force an ADU below 800 square feet.

Parking and garage conversions

Generally one off-street space is required per ADU, and it may be in a setback area 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 vehicle stop.

No replacement parking is needed when a garage or carport is demolished or converted. Garage demolition permits are reviewed and issued concurrently with the ADU application.

Owners, rentals and sale

ADUs permitted between January 1, 2020 and January 1, 2025 are not subject to an owner-occupancy requirement, while all JADUs require an owner to live in either the home or the JADU unless a government agency, land trust or housing organization owns it. An ADU cannot be rented for less than 30 days.

The owner must obtain a business license and rental registration from the Community Improvement Division, renew them annually, give projected annualized rent with the building permit application and report actual rent within 90 days after each yearly anniversary.

An ADU may not be sold separately from the lot and primary dwelling, except as Government Code section 66341 allows.

Utilities and safety

Fire sprinklers are required in an ADU only if they are required in the primary residence, and building an ADU does not trigger sprinklers in the existing home. A property on a septic system needs a percolation test completed within the last five years or recertified within the last ten. The ADU address must be clearly legible from the public right-of-way so fire and safety personnel can find it.

Questions to ask Planning before you design

Is my lot zoned for single-family or multifamily use, and does the ordinance allow a JADU on it?
Does my lot or the existing structure qualify for the 800 square foot limited detached category?
Is the site on a septic system, and is the percolation test current?
What are the current plan check, permit and utility fees for the size I am considering?
Can my existing garage be converted without changing its footprint?

Fees and property tax

State law limits impact fees for smaller ADUs, and the HCD ADU guidance explains how those limits work. The city can give you a current fee estimate for your project size, and utility providers may charge their own connection fees.

New construction is reassessed under Prop 13, which means an ADU can raise the property tax bill, so ask the county assessor how a new unit would be valued before you commit to plans.

ADUs, garage conversions and selling an Azusa house

Many older homes have a converted garage or a backyard unit built without permits. Buyers and lenders ask about them, and California sellers generally disclose known unpermitted work. Our guide to selling as-is with unpermitted work explains the rules, and our Prop 13 guide explains how new construction can affect property tax. Before you list an Azusa home with a second unit:

Check city records for permits on any ADU, conversion or addition.
Ask Planning whether the structure could qualify under current rules.
Estimate plans, fees and corrections needed to legalize it.
Compare that with selling as-is and letting a cash buyer take on the legalization.

How to sell a house in Azusa

Check which structures, additions and conversions on the property have city permits.
Collect permits, plans and any city notices.
Request a no-obligation cash offer for the house as it stands.
Choose your closing date.
Close with no repairs, permit cleanup or showings required.

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

Own an Azusa home with an ADU or garage conversion? Sell as-is for cash.

Get My Cash Offer

Frequently asked questions

How many ADUs can I build in Azusa?

On a single-family lot, the ordinance allows one ADU or one converted JADU, or one new detached ADU plus one JADU. Multifamily lots have separate limits.

How big can an Azusa ADU be?

A JADU is up to 500 square feet. A limited detached ADU is 800 square feet or smaller, and larger ADUs may reach 850 square feet for a studio or one bedroom and 1,000 for two bedrooms.

How long does Azusa take to review an ADU?

The city must approve or deny a complete application within 60 days, and the ordinance says an application not acted on in that time is deemed approved.

Can I rent my Azusa ADU short term?

No. The ordinance bars rental terms shorter than 30 days.

Does an Azusa ADU need parking?

One space is generally required, with exceptions such as being within a half mile walk of transit, and no replacement parking is required for a garage conversion.

Can I sell an Azusa ADU separately?

No, except as Government Code section 66341 allows.

Can I sell my Azusa 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

Sources

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