ADU Company in Mission Viejo — Design, Permits and Build Under One Contract

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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ADU Company in Mission Viejo, CA

Kitchen remodeling in Mission Viejo means working inside homes built between the late 1960s and 1980s, where original layouts, dated electrical panels, and decades of Southern California heat have taken their toll. We’re Classic ADU Builders, and while ADUs are our specialty, we also run full kitchen remodels from the same crews that finish our ADU interiors. So the plumbing, cabinetry, and tile work that makes an ADU move-in ready is the same standard we bring to the main house. Call (877) 265-5587 to talk through what your kitchen needs and what it will actually cost here.

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Why Mission Viejo Homes Are Different

Mission Viejo is a master-planned community built largely by the Mission Viejo Company from the late 1960s onward. Most homes in 92691 and 92692 sit in tract subdivisions governed by active HOAs and CC&Rs that layer on top of California’s ADU laws, and that same dynamic shapes every remodel inside the house. For kitchens, it usually means you’ll face HOA architectural review if you’re adding an exterior vent, changing a window, or pushing a wall out, not just city permitting. The city’s own ADU ordinances are stricter than some neighboring south-Orange-County cities on parking and lot coverage, but kitchens have their own local quirks: many original homes have copper supply lines that are fine, electrical panels that are not, and slab foundations that make moving a sink or island drain more expensive than homeowners expect.

The climate matters too. Hot, dry summers and Santa Ana wind events mean ventilation, range hoods, and window placement aren’t aesthetic choices here, they’re functional. And because so much of Mission Viejo sits on sloped terrain with mature landscaping, exterior wall penetrations and gas line runs sometimes need to work around roots and grade changes that a flat-lot city never sees.

Our Main Mission Viejo Services

Most Mission Viejo homeowners call us for two things: building an ADU on their lot, or remodeling a bathroom in the main house as part of a broader update. Here’s how each works here.

ADU Builders in Mission Viejo

Adding an ADU in Mission Viejo means threading HOA architectural review, city parking and lot-coverage rules, and a lot that may slope or carry easements. We’ve built with prefab and modular systems from Abodu, Cover, Dvele, and Plant Prefab, plus Tuff Shed conversions and custom site-built units, so the recommendation comes from what actually fits your specific lot, not a sales quota. The Mission Viejo HOA review process often rejects detached ADUs visible over rear fences or blocking a neighbor’s view corridor, so placement and roofline drive the design from day one. Read more on our ADU Builders in Mission Viejo page.

ADU Builders in Mission Viejo

Bathroom Remodeling in Mission Viejo

Bathrooms in 1970s and 1980s Mission Viejo tract homes tend to share the same weak points: original cast-iron drain lines, single vanity layouts, and shower pans that have outlived their waterproofing. We handle gut-and-replace remodels, tub-to-shower conversions, and full ADU bathroom build-outs with the same crews and materials, including James Hardie backer and properly sloped pans. Because our teams also finish ADU interiors, we’re set up to do a main-house bath and a new ADU bath on the same permit cycle if that’s your plan. See Bathroom Remodeling in Mission Viejo for local pricing and scope.

Bathroom Remodeling in Mission Viejo
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What happens when you call

  1. 1
    A real person answersNo phone trees — you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Kitchen Remodeling in Mission Viejo

A kitchen remodel in Mission Viejo usually means replacing original 1970s or 1980s cabinets and laminate counters, upgrading an electrical panel that cannot support modern appliances, and reworking a closed-off galley layout into something that opens to the dining or family room. The hot, dry climate makes a properly vented range hood and a well-placed window or skylight more than nice-to-haves. We do the full job with our own crews, from demolition through custom cabinets, countertops, tile, lighting, and appliance installation, so you’re not coordinating three contractors. That full-service approach is the same one we use on ADU kitchens, and you can see the broader service picture on our Kitchen Remodeling hub page.

Full Gut Kitchen

Signs you need it

Original cabinets with failing hinges, warped particleboard boxes, a layout that no longer functions for the household, or water damage behind the sink and dishwasher.

What it costs in Mission Viejo

A full gut kitchen remodel in Mission Viejo typically runs $45,000 to $90,000 depending on cabinet line, countertop material, and how much plumbing and electrical relocation is needed.

How we do it

We demo to studs, move plumbing and electrical where the new layout requires, run new circuits and venting, then rebuild with cabinetry, counters, backsplash, flooring, and trim to a finished, inspected room.

Cabinet Refacing and Countertop Replacement

Signs you need it

Cabinet boxes are structurally sound but the doors, faces, and hardware look worn, and the countertops are scratched, stained, or date the kitchen.

What it costs in Mission Viejo

Refacing and new countertops in Mission Viejo typically land between $18,000 and $35,000 depending on door style, finish, and whether you choose quartz, granite, or solid surface.

How we do it

We measure, order new doors and drawer fronts, apply matching veneers to the boxes, install new hardware, then template and set the new countertops in one coordinated sequence.

What Kitchen Remodeling Costs in Mission Viejo

Item Typical range in Mission Viejo
Full gut kitchen remodel $45,000 – $90,000
Cabinet refacing and new countertops $18,000 – $35,000
Kitchen island addition with plumbing and electrical $8,000 – $18,000

Does a kitchen remodel in Mission Viejo require HOA approval?

Only when the work changes the exterior: moving or adding a window, adding an exterior vent hood, or expanding beyond the existing footprint. Interior-only remodels, including most full guts, only need city permits. Call (877) 265-5587 and we’ll tell you which path applies to your house.

Do you handle the permits for a Mission Viejo kitchen remodel?

Yes. We pull the city permits, schedule inspections, and manage corrections through final sign-off so the work is fully permitted and documented for resale. Estimates are free, and the quote includes the permit process, not just labor and materials.

Brands We Service in Mission Viejo

We work with the brands Mission Viejo homeowners have already researched: Boxabl, Plant Prefab, Tuff Shed, and James Hardie fiber cement for exteriors that hold up to Santa Ana heat and dry summers. Parts and finish materials for these systems are stocked through our regional suppliers, which keeps most service and warranty work moving without multi-week waits. See our brands for the full lineup.

Pricing for ADU Company in Mission Viejo, CA

Service Typical range in Mission Viejo
Full gut kitchen remodel $45,000 – $90,000
Cabinet refacing and new countertops $18,000 – $35,000
Kitchen island addition $8,000 – $18,000
Tuff Shed ADU conversion $80,000 – $140,000
Prefab ADU (Boxabl, Plant Prefab) $150,000 – $300,000
Custom site-built ADU $250,000 – $450,000
Bathroom remodel (ADU or main house) $18,000 – $45,000

In Mission Viejo, sloped lots, older electrical panels, HOA-required design revisions, and long utility runs to detached ADUs push costs toward the upper end of these ranges. Every quote we give is a written, line-item price; if conditions change mid-job, you approve the change before any extra dollar is spent.

Neighborhoods We Serve in Mission Viejo

We work across Mission Viejo’s tract subdivisions, including the lake-adjacent lots, the hillside streets south of La Paz Road, and the flatter neighborhoods north of Crown Valley Parkway. Each HOA has its own review quirks, so the neighborhood drives the approval strategy more than the construction approach.

  • Lake Mission Viejo area (92692)
  • La Paz corridor (92691)
  • North Crown Valley (92692)
  • Oso Creek area (92691)
  • Pacific Hills and surrounding hillside tracts (92692)

Most estimate visits in Mission Viejo can be scheduled within a few business days, with evenings available for homeowners who want to walk the lot or kitchen after work.

Service Area – Cities Near Mission Viejo

Classic ADU Builders also serves nearby south Orange County communities. If you’re in Coto De Caza, CA, Lake Forest, CA, Laguna Hills, CA, or Rancho Santa Margarita, CA, the same crews and pricing structure apply, with local HOA and permit knowledge for each city.

Serving Mission Viejo, CA — Our Local Coverage Area

We’re based in the Mission Viejo area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.

FAQs About ADU Company in Mission Viejo

Ready to get started? Free estimates · Free written quotes response in Mission Viejo
Call (877) 265-5587

What happens when you call

  1. 1
    A real person answersNo phone trees — talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Mission Viejo Customers Say

★★★★★ 4.8 from 4+ reviews

"Unit came out great and the tenant is happy. The timeline ran long, largely because of how slow the city was on plan check, though a couple of the delays were scheduling on their end."

— Marcy Miller

"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."

— Beatriz Morales

"The kitchenette layout he suggested made better use of the space than the one on our original sketch."

— Eric Tran

How It Works in Mission Viejo

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu needs and we provide an upfront, transparent quote — no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Mission Viejo — typically within 30–60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

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