How United Build Partners helps Moreno Valley homeowners
We're not a construction company. United Build Partners is an ADU advisory and contractor-matching service: we start with a free review of your property and goals, help you understand what's realistic for your lot under Moreno Valley's rules, and — when it's a good fit — connect you with up to three contractors in our network suited to your project type and neighborhood. From there, you compare proposals and decide who to work with; the licensed contractor you choose handles the actual design and construction.
ADU rules and permitting in Moreno Valley
Like every California city, Moreno Valley's ADU rules build on the statewide floor — ministerial review and a 60-day clock on complete applications (our California ADU laws guide covers the framework). The Community Development Department publishes an unusually complete ADU resource at moval.gov/adu, including the plan catalog and submittal requirements.
What's specific to Moreno Valley
- Seven free pre-approved detached plans. The city offers city-designed detached ADU plans at no cost: Studio A (415 sq ft), Studio B (306 sq ft), 1-Bed A (730), 1-Bed B (586), 2-Bed A (910), 2-Bed B (779), and 3-Bed (988), each with exterior options. Because the design is already reviewed, permitting is faster than a fully custom plan.
- Pre-approved plans have real eligibility limits. To use a pre-approved plan, the lot must be zoned residential with an existing single-family home or duplex, and must NOT be in a geo-hazard zone, landslide zone, flood zone, or Wildland-Urban Interface (WUI) area. Moreno Valley has meaningful terrain and hazard mapping — confirm your parcel's status before assuming a plan is available.
- Four ADU types recognized. The city expressly covers converted-space, attached, detached (custom or manufactured, with restrictions), and Junior ADUs (existing space of 500 sq ft or less within a single-family home) — a full menu, clearly documented.
- Solar is required on detached ADUs. The city states plainly that state law requires solar panels on a new free-standing ADU — budget for it. Our solar requirements guide covers the Title 24 rule.
- Manufactured/prefab detached units allowed. Detached ADUs can be custom-built or a pre-fabricated/manufactured home subject to restrictions — worth exploring if schedule matters; see our prefab ADU guide.
Property and lot considerations
Moreno Valley is a large, relatively young Inland Empire city with broad residential tracts and significant terrain and hazard mapping toward its edges — which is exactly why the pre-approved program's zone exclusions matter. A conventional flat R-1 lot in the city's core is often a strong candidate for a free pre-approved detached plan; a parcel near the hills or in a mapped hazard zone will need a custom path and extra site engineering. Lot geometry and hazard status, not averages, decide your options — which is what a property review sorts out.
Common ADU types for Moreno Valley homeowners
On eligible lots, a detached ADU from the free catalog is Moreno Valley's most streamlined and cost-effective path. A garage conversion or converted-space ADU suits homeowners reusing existing structure, a Junior ADU is the lowest-cost interior option, and the city's manufactured-home allowance makes a prefab unit genuinely worth pricing here.
Cost factors in Moreno Valley
Inland Empire construction pricing generally runs below the coastal counties, and Moreno Valley's free pre-approved plans eliminate much of the design line for eligible lots — a real, city-provided saving. Budget the required solar and any hazard-zone site work early; anchor against our cost guide and soft-cost categories, then confirm fees with the city.
Financing your Moreno Valley ADU
Most homeowners fund ADU construction through a HELOC, cash-out refinance, a construction loan, or some combination — see our ADU financing overview and loan payment calculator for how each works. Financing options aren't generally city-specific, but a lender may consider your neighborhood and local rents when evaluating projected rental income as qualifying income.
How our process works
Frequently asked questions
Yes — the city publishes seven free pre-approved detached ADU plans (306 to 988 sq ft) that eligible homeowners can use, which removes most of the custom-design cost and speeds permitting. Eligibility requires a residential lot with a single-family home or duplex, outside geo-hazard, landslide, flood, and Wildland-Urban Interface zones.
Seven options: Studio A (415 sq ft), Studio B (306 sq ft), 1-Bedroom A (730), 1-Bedroom B (586), 2-Bedroom A (910), 2-Bedroom B (779), and 3-Bedroom (988) — each with multiple exterior options. Custom designs remain available for lots or layouts the catalog doesn't fit.
For a new free-standing (detached) ADU, yes — the city notes state law requires solar panels on it. Conversions of existing space are generally treated differently. Our solar guide explains the Title 24 rule; confirm specifics with the city.