Moreno Valley 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 Moreno Valley ADU pages; sources are listed at the end.

Moreno Valley has a dedicated ADU website with a step-by-step guide, city pre-approved plans and an FAQ, and it says an ADU must include permanent provisions for living, sleeping, eating, cooking and sanitation on a lot zoned for residential use that has an existing or proposed dwelling. Because ADU law has changed repeatedly, rely on the city’s current pages rather than older handouts.

Moreno Valley ADU basics at a glance

What are the steps to build an ADU in Moreno Valley?

The city’s FAQ lays out the sequence. Review the ADU checklist and other documents on the ADU home page and ADUforYOU, decide which type of ADU fits your needs, budget and lot, and obtain a permit before starting construction.

A design professional customizes the city’s template sheets, prepares a scaled site plan that meets the ADU site plan requirements, and includes the Title 24 sheets. You then submit an Address Request online through SimpliCITY with a dimensioned plot plan showing where the ADU sits on the property.

What does an ADU cost to permit?

The city says plan review, inspection and permit costs depend on several factors: the type and size of the ADU, special districts annexation fees, fire sprinkler plan and permit fees where required, public works grading fees where required, and charges from other outside agencies. The FAQ lists utility and district contacts, including water, sewer, gas, electric and school districts, because several outside agencies may charge fees.

How do I check Moreno Valley zoning?

Zoning controls whether an ADU is allowed and what type fits, so confirm it before paying for plans. The Community Development Department’s Planning Division can answer zoning questions, and the city’s property lookup tools show the parcel. Our sources did not list a direct zoning map link, so ask the permit counter or Planning for the current method.

How zoning and ADUs affect selling a house in Moreno Valley

A converted garage, a backyard cottage or a rented room is valuable only if buyers and lenders can see it was legally built. In California, sellers generally must disclose known problems, including work you know was done without a permit.

A unit with no permit or address on file may be treated as unpermitted living space, and a lender or appraiser may refuse to count it. The usual options are to permit it after the fact, remove it, lower the price, or sell to a buyer who accepts the risk.

If the unit is rented, remember the city’s business license requirement for rental property.

How to sell a Moreno Valley house with an unpermitted unit

1. Check the permit history. See whether the unit appears on SimpliCITY.
2. Check the address. A legal ADU has its own address assigned by Building and Safety.
3. Ask the city. Email permitcounter@moval.org about what it would take to legalize the unit.
4. Compare options. Legalize, discount, or sell as-is to a cash buyer.

We buy Moreno Valley houses as they are. Read how selling a house as-is in Moreno Valley works, or see our Moreno Valley cash-offer process. For permit records see our Moreno Valley building permits guide, and for citations our Moreno Valley code enforcement guide.

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

Checking whether a Moreno Valley ADU was set up properly

Moreno Valley’s FAQ describes a sequence that leaves traces in the city’s records, and those traces are what a buyer’s agent or lender will look for.

The city asks owners to review the ADU checklist, choose a type, obtain a permit before construction, have a design professional prepare a scaled site plan with the Title 24 sheets, and request an address for the unit through SimpliCITY with a dimensioned plot plan.

So for a unit you intend to sell with, look for four things: a permit, a final inspection, a separate address assigned by Building and Safety, and, if the unit is rented, the business license the city says a rental property owner must obtain.

Pre-approved plans and their limits

The city’s pre-approved plans are offered for residentially zoned lots with an existing single-family home or duplex, and the city notes they are outside geo-hazard, landslide, flood and wildland-urban interface zones.

If your lot sits in one of those areas, a pre-approved plan is not the route, which matters to a buyer who hopes to add a unit later. Ask Building and Safety at permitcounter@moval.org which category your lot falls in.

Questions a buyer is likely to ask about your unit

• Was it permitted, and was the permit finaled?
• Does it have its own address?
• Is it a junior ADU of 500 square feet or less inside the house, or a separate unit?
• Is there a rental business license?
• Were permit, plan review and fee amounts paid, including any special district annexation fees?

Moreno Valley zoning and ADU FAQ

Does an ADU in Moreno Valley need its own address?

Yes. The city says an ADU needs a separate address assigned by Building and Safety, requested online through SimpliCITY with a dimensioned plot plan.

Do I need a business license to rent an ADU in Moreno Valley?

The city says the owner must obtain a business license for a rental property.

What is a junior ADU in Moreno Valley?

Existing space of 500 square feet or less contained entirely within an existing or proposed single-family residence.

Does a Moreno Valley ADU need its own address?

Yes. The city says an ADU needs a separate address assigned by Building and Safety, requested through SimpliCITY with a plot plan.

Who qualifies for the city’s pre-approved ADU plans?

Residentially zoned lots with an existing single-family home or duplex that are not in geo-hazard, landslide, flood or wildland-urban interface areas.

Can I sell a Moreno Valley house with an unpermitted unit?

Yes, with proper disclosure. A cash buyer can purchase it as-is and account for the risk in the offer.

Sources

• City of Moreno Valley: Accessory Dwelling Units
• City of Moreno Valley: ADU Building FAQ
• City of Moreno Valley: ADU Step by Step Guide

This guide is general information, not legal advice. ADU and zoning rules change often; confirm requirements with the City of Moreno Valley.