ADU Builder in Sun City, California

Your local ADU builder in Sun City

Sun City is one of Menifee's most established neighborhoods, with mature lots and a strong demand for flexible living space — from rental income to room for family. An ADU is one of the best investments a Sun City homeowner can make, and we build every type.

Many Sun City homes sit on generous single-story lots that are ideal for a detached backyard ADU, while others have spacious garages that convert affordably into rentable units. We assess your specific lot, setbacks, and utilities to recommend the option that returns the most for your budget.

Every ADU type, built locally

Whatever fits your lot and budget, we design, permit, and build it with our own crew:

• Detached ADUs — standalone backyard units from 500–1,500 sq ft, the highest-income option ($140K–$280K).
• Garage conversions — the fastest, lowest-cost route at $60K–$120K in 3–5 months.
• Junior ADUs (JADU) — up to 500 sq ft within your existing home, from $30K–$70K.
• Attached ADUs — up to 1,200 sq ft with a private entrance, ideal for multigenerational families.

Permitting for Sun City ADUs

Sun City is a community within the City of Menifee, so ADU permits are handled through City of Menifee Building & Safety. We prepare the full permit package — structural details and California Title 24 energy compliance included — and carry it through plan check and inspections so you never have to navigate the counter alone. If you want the most predictable path, ask us about the City of Menifee Permit-Ready ADU (PRADU) program, which uses pre-approved plans to speed up approval.

Why Sun City homeowners choose Full Circle Builders

We are a licensed California general contractor (CSLB #1009685) headquartered nearby in Temecula since 2004, and we self-perform every trade — foundation, framing, mechanical, electrical, plumbing, and finishes — rather than handing your project to a rotating set of subcontractors. That means one accountable team, a tighter schedule, and a 4.9-star average across 47 verified reviews. We build throughout Sun City and the surrounding Menifee neighborhoods including Audie Murphy Ranch, Heritage Lake, and the original Sun City core.

Frequently asked questions

Do you build ADUs in Sun City?

Yes. Sun City is part of our core service area. We design, permit, and build detached ADUs, garage conversions, JADUs, and attached ADUs for Sun City homeowners, all with our own licensed crew.

How much does an ADU cost in Sun City?

It depends on the type: garage conversions typically run $60,000–$120,000, JADUs $30,000–$70,000, attached ADUs $120,000–$200,000, and detached ADUs $140,000–$280,000. You receive a fixed written quote before any work starts.

Who handles the permits for a Sun City ADU?

We do. Sun City is a community within the City of Menifee, so ADU permits are handled through City of Menifee Building & Safety. We manage the entire submittal, plan check, and inspection process for you.

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