Santa Clarita Zoning and ADU Guide for Homeowners and Sellers

Last updated November 13, 2026. Reviewed by the Cash Home Buyers CA team. Information comes from the City of Santa Clarita; sources are listed at the end.

Santa Clarita publishes ADU FAQs, ADU/JADU plan requirements and a Planning Director’s Policy on ADUs and JADUs, and tells owners to contact Planning at 661-255-4330 to confirm whether a property is eligible. A property must meet the zoning and other requirements.

Santa Clarita zoning and ADU at a glance

How do I find out what is allowed on a Santa Clarita lot?

Call the Planning Division at 661-255-4330 and check the city’s Planning FAQs. If your parcel is zoned SP, it is part of a Specific Plan, which can carry its own rules.

What are the ADU rules in Santa Clarita?

The city’s Planning FAQs address whether ADUs are allowed, and the city’s handout and Director’s Policy set out how it applies ADU and JADU rules. State law and local policy change, so confirm current rules and fees with Planning before relying on a summary. Fee amounts in particular are updated over time.

Selling a Santa Clarita house with an ADU or converted garage

A permitted ADU is part of the property and can matter to buyers. A garage turned into living space without approval is different, since the city says garage conversions to living space are prohibited under its Municipal Code. See our Santa Clarita building permits guide and code enforcement guide.

How to sell a house in Santa Clarita with an ADU or zoning problem

1. Ask the city what permit records exist for the unit or garage conversion.
2. Call Planning to confirm what applies to the lot.
3. Compare options: legalize the unit where possible, sell with a price credit, or sell as-is to a cash buyer who prices the risk in.
4. Disclose honestly. Known unpermitted work should be disclosed.

We buy Santa Clarita houses as they are. See how we buy houses in Santa Clarita or our cash home buyer page.

Not sure what your zoning or unit means for a sale? Call (424) 435-2326 or request a cash offer. There is no cost and no obligation.

Garage conversions in Santa Clarita

The city’s code enforcement FAQ says converting a garage into living space is prohibited by its Municipal Code. That is a notable local point for sellers, because many California cities allow garage conversions to ADUs under state law while treating a conversion to ordinary living space differently.

If your home has a garage that was turned into a bedroom, den or office, ask Planning whether it can be treated as an ADU, which requires going through the city’s ADU process, or whether it would have to be restored to a garage. Do not assume a past owner’s conversion was approved.

Fees and paperwork

The Planning Division publishes a fee schedule, and the 2024 schedule lists an ADU fee of $400. Fees are updated over time, so confirm the current amount with Planning at 661-255-4330 before budgeting. The city also publishes an ADU FAQs handout, ADU and JADU building plan requirements, and a Planning Director’s Policy on ADUs and JADUs dated February 2026.

Specific Plan parcels

A parcel zoned SP is part of a Specific Plan, which can carry its own development rules in addition to the city’s general ones. If your property is in a Specific Plan area, ask Planning which standards govern before you rely on a general summary of ADU rules.

Questions to ask before you sell a house with a back unit or converted space

• Is the unit on record as an ADU, or is it a garage or room that was converted without approval?
• Does the property sit in a Specific Plan area?
• Is there an open permit, or one that expired?
• What would it cost and take to legalize the space, and is that realistic before closing?

A permitted ADU can add value, but an unrecorded conversion can make a buyer’s lender or inspector hesitate. Our California guide to selling as-is with unpermitted work explains how to disclose it and your options if you do not want to legalize first.

Santa Clarita zoning and ADU FAQ

Who do I call about ADU eligibility in Santa Clarita?

The city says to contact Planning at 661-255-4330 to confirm a property’s eligibility.

What does SP zoning mean in Santa Clarita?

If a parcel is zoned SP, it is part of a Specific Plan.

Can I convert a garage to living space in Santa Clarita?

The city’s FAQ says converting a garage into living space is prohibited by the Municipal Code. Ask Planning about ADU options.

Can I sell a house in Santa Clarita with an unpermitted ADU?

Yes. It can complicate a traditional sale, so disclose it and choose between legalizing it, discounting the price, or selling as-is to a cash buyer.

Can I convert my Santa Clarita garage into living space?

The city’s code enforcement FAQ says converting a garage into living space is prohibited by the Municipal Code. Ask Planning whether an ADU conversion is possible.

What does the Santa Clarita Planning Division charge for an ADU?

The 2024 Planning fee schedule lists an ADU fee of $400. Confirm the current amount with Planning at 661-255-4330.

Sources

• City of Santa Clarita: ADU FAQs
• City of Santa Clarita: Planning FAQs
• City of Santa Clarita: Director’s Policy, ADUs and JADUs
• City of Santa Clarita: Planning Division Fee Schedule
• City of Santa Clarita: Code Enforcement FAQs

This guide is general information, not legal advice. ADU and zoning rules change; confirm with the City of Santa Clarita.