How United Build Partners helps Redondo Beach 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 Redondo Beach'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 Redondo Beach
Like every California city, Redondo Beach's ADU rules build on the statewide floor — ministerial (no-hearing) review and a 60-day clock on complete applications, with detached units guaranteed to at least 800 sq ft, 4-foot side/rear setbacks, and 16-foot height (18 ft near transit). Our California ADU laws guide covers the framework; the city's standards sit in RBMC Title 10 and its Community Development pages.
What's specific to Redondo Beach
- An ADU legalization program (AB 2533). Redondo Beach publishes a dedicated pathway to legalize older unpermitted ADUs under AB 2533. If you bought a home with an unpermitted second unit, this is the relevant route — see our ADU legalization guide for how these programs generally work.
- An AB 1332 pre-approval pathway. The city maintains an AB 1332 page for plan preapproval, as state law requires since January 1, 2025 — check what plans, if any, are currently available before assuming a catalog exists.
- Owner-occupancy in single-family zones — confirm with the city. Per the city's materials, an owner-occupancy requirement applies to the primary dwelling or the ADU in single-family zones for units approved after January 1, 2025. State law (AB 976) broadly limited owner-occupancy mandates for standard ADUs, so how this applies to your specific project is worth confirming directly with Planning rather than assuming either way.
- Coastal Zone may apply. Redondo Beach is a coastal city, and parts of it fall within the Coastal Zone, where a Coastal Development Permit can be required in addition to the ADU permit. Whether your parcel is affected is address-specific — confirm early. Our coastal zone guide explains the added layer.
- Standard JADU rule. A Junior ADU must be within the single-family residence and no larger than 500 sq ft, consistent with state law.
Property and lot considerations
Redondo Beach is a dense, desirable coastal city with a mix of older beach-close neighborhoods and tighter lots — which makes two things especially relevant here. First, the legalization program matters: older unpermitted units are common in beach cities, and resolving one is often the first step. Second, whether your parcel sits in the Coastal Zone is a real, address-specific question that can add a permit layer. Lot geometry and coastal status decide more than averages do — exactly what a property review sorts out.
Common ADU types for Redondo Beach homeowners
On Redondo Beach's tighter coastal lots, a garage conversion or Junior ADU often fits where a large detached unit won't, while a detached ADU works where yard space allows. If you're dealing with an existing unpermitted unit, start with legalization before planning new construction.
Cost factors in Redondo Beach
Coastal Los Angeles County construction pricing runs at the higher end of our service area, and Coastal Zone review or corrosion-resistant coastal materials can add cost near the water. Anchor against our cost guide and soft-cost categories, and if legalizing an existing unit, budget for any corrective work the city requires.
Financing your Redondo Beach 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 a dedicated ADU legalization pathway under AB 2533, which is the relevant route for older unpermitted second units. What corrective work is required depends on the unit; our legalization guide covers how these programs generally work, and the city confirms specifics for your property.
The city's materials describe an owner-occupancy requirement in single-family zones for ADUs approved after January 1, 2025 — while state law (AB 976) broadly limited such mandates for standard ADUs. Because that interaction isn't something to guess at, confirm how it applies to your project directly with the Planning Division.
It can. Redondo Beach is a coastal city and parts of it fall within the Coastal Zone, where a Coastal Development Permit may be required alongside the ADU permit. Whether your specific address is affected is worth confirming with the city early, since it adds time and steps.