Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Mission Viejo, CA
Home renovation in Mission Viejo means working on homes built mostly between 1970 and the early 1990s, when this master-planned city went up faster than almost anywhere else in Orange County. Those houses are now 30 to 50 years old, and the work homeowners call about is rarely cosmetic. We see re-pipes behind 1980s drywall, roof underlayment baked by inland heat, and original single-pane windows that rattle during Santa Ana winds. Square One Builders has served Mission Viejo since 2014, managing full-scope renovations under one contract so the homeowner never coordinates separate trades. Call (877) 688-9930 to talk through what your home needs.
Why Mission Viejo Homes Are Different
Mission Viejo is one of the largest master-planned communities in California. Most of the city was built out by the early 1990s as planned tracts, so nearly every construction project here is a remodel, addition, re-pipe, re-roof, or ADU conversion on an aging original home. There is no greenfield land left to build on. That reality changes the work: walls hide 1970s copper that has thinned at the elbows, original roof tile is nearing the end of its life, and floor plans from that era were not designed for how families live now.
The climate adds another layer. Inland Orange County summers are hot and dry, and Santa Ana wind events push fire-resistant roofing and exterior material choices to the front of every conversation. Winter rains, when they come, expose drainage and waterproofing problems on Mission Viejo’s hillside and slope-adjacent lots faster than anywhere flatter. Homes in tracts like Pacific Hills, Aegean Heights, and areas off Marguerite Parkway sit on grades where water wants to move, and a poorly flashed window or a cracked paver deck shows it within one wet season.
Then there is the HOA layer. Many Mission Viejo tracts are governed by architectural review committees with real authority. A homeowner cannot just pick a roof color or replace windows with a different style. Submittal packages, color and material approvals, and board review timelines are part of the job before a permit is even pulled. Contractors who work this city regularly know the review process for Lake Mission Viejo Association properties, the Viejo area, and the smaller neighborhood associations, and they build that time into the schedule instead of being surprised by it.
Styles & brands we work with







Our Main Mission Viejo Services
Most Mission Viejo homeowners reach out to us for one of two things: a whole-home renovation that needs one accountable team, or a full remodel of the spaces they use every day. Both are covered below with the local details that matter here.
General Contractor in Mission Viejo
When a Mission Viejo home needs work across multiple systems, a general contractor is the difference between a project and a full-time job for the homeowner. We coordinate demolition, structural work, roofing, windows, plumbing fixtures, cabinetry, countertops, and exterior work under one contract, on one schedule, with one point of accountability. On a 1970s tract home near Lake Mission Viejo, that often means sequencing a re-pipe around a kitchen remodel so walls are opened once instead of twice. HOA submittals, city permits for Mission Viejo, and trade coordination all run through us. For the full scope of what we handle, see General Contractor in Mission Viejo.

Home Remodeling in Mission Viejo
Mission Viejo’s original floor plans reflect how families lived in the 1980s: enclosed kitchens, compartmentalized bathrooms, small closets. Home remodeling here means opening those spaces deliberately, moving walls when the structure allows, and updating every system behind the finish work, not just the surfaces. We price and schedule each phase so a family living through a remodel knows what happens next and when. Homes in tracts like La Paz and Casta del Sol have their own HOA expectations, and we handle those approvals as part of the job. Read the detail at Home Remodeling in Mission Viejo.

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

Home renovation in Mission Viejo is different from new construction because the bones of the house were set decades ago and the systems inside them are reaching the end of their service life. A 1978 tract home off Oso Parkway is likely holding original copper supply lines, a roof that has baked through inland summers, and windows with failed seals. Renovation means addressing those systems while updating the home’s look and function, in the right order, without tearing into walls twice. That sequencing, and the HOA approvals that come with Mission Viejo work, is the core of what we manage through Home Renovation.
Home Renovation Contractors
Signs you need it
You notice low water pressure across multiple fixtures, cracking at drywall seams, original single-pane windows, or an electric panel that trips when two appliances run at once.
What it costs in Mission Viejo
Full home renovation in Mission Viejo typically falls between $45,000 and $130,000 depending on square footage, scope, and how much original plumbing and electrical must be replaced.
How we do it
We open the walls once, replace or upgrade the mechanical systems, reframe where the plan calls for it, then close everything back with the finishes you selected.
Home Renovation Companies
Signs you need it
You have a renovation plan that touches three or more systems, you have gotten conflicting bids from single-trade contractors, or you are tired of managing the schedule yourself.
What it costs in Mission Viejo
A renovation company managing the full scope in Mission Viejo generally charges between $45,000 and $130,000 for a typical whole-home project, with kitchens and bathrooms priced separately within that scope.
How we do it
We scope the project from the ground up, produce a fixed line-item quote, pull the permits, prepare the HOA submittal if your tract requires one, and run every trade on our schedule.
Home Improvement Contractors
Signs you need it
Your home needs updates across multiple rooms, but no one trade alone can fix the full list, and you want one contract instead of five.
What it costs in Mission Viejo
Home improvement work that spans multiple rooms in Mission Viejo runs from $14,000 for a focused kitchen update to $130,000 for a broad interior and exterior renovation.
How we do it
We sequence the work so you are never living in a full construction zone longer than necessary, and we coordinate every trade from demo to final punch list.
Renovation Contractors
Signs you need it
You have a 30 to 50 year old Mission Viejo home with original systems and a floor plan that no longer works for the way you live.
What it costs in Mission Viejo
A renovation contractor for a full-scope Mission Viejo project typically quotes between $45,000 and $130,000, with the final number driven by structural changes and system replacement.
How we do it
We start with a site walk, measure everything, produce a written scope and fixed price, then run the project with one superintendent who is on site daily.
What Home Renovation Costs in Mission Viejo
| Item | Typical range in Mission Viejo |
|---|---|
| Whole-home renovation | $45,000 – $130,000 |
| Kitchen remodel within a renovation | $14,000 – $45,000 |
| Bathroom remodel within a renovation | $9,000 – $28,000 |
How long does a Mission Viejo renovation take?
A whole-home renovation in Mission Viejo usually runs 4 to 8 months depending on scope, with HOA approval timelines added on top when your tract requires review. We give you a written schedule before work starts. Call (877) 688-9930 for a straight timeline on your project.
Do you handle the HOA approval for renovation work?
Yes. For Mission Viejo tracts with architectural review committees, we prepare the submittal package, material and color sheets, and any required documentation, and we track the review while the project stays on schedule. Call (877) 688-9930 to ask about your specific neighborhood.
Brands We Service in Mission Viejo
We install and service material from a portfolio of 50+ nationally recognized brands across roofing, cabinetry, countertops, plumbing fixtures, windows, siding, hardscaping, and prefabricated structures. On Mission Viejo jobs we routinely quote Abodu and Dvele for ADU work, and Cover or Mighty Buildings where a prefab panel approach fits the lot. Parts and material lead times are confirmed before the contract is signed. See our brands for the full list.
See the difference
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AfterPricing for Remodeling Company in Mission Viejo, CA
| Service | Typical range in Mission Viejo |
|---|---|
| Kitchen remodel | $14,000 – $45,000 |
| Small kitchen remodel | $9,000 – $20,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Walk-in shower installation | $4,500 – $12,000 |
| Tub-to-shower conversion | $3,500 – $10,000 |
| Countertop installation | $2,000 – $6,500 |
| Window replacement | $4,500 – $15,000 |
| Roof replacement | $8,000 – $20,000 |
| Paver patio installation | $3,500 – $11,000 |
| Vinyl fence installation | $3,500 – $9,000 |
| Home addition | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
In Mission Viejo, two things push prices upward more than anywhere else we work. The first is hillside access: lots off Crown Valley Parkway and around the lake often need more foundation, drainage, and shoring work than flat tracts. The second is HOA review: materials and colors must match the association’s approved palette, and that narrows options and can add review time. Every quote we give is a fixed line-item price, and we do not change the number once work starts unless the scope changes and you approve it in writing first.
Neighborhoods We Serve in Mission Viejo
We work across the entire Mission Viejo area, from the lake-adjacent tracts to the inland neighborhoods along the 241 corridor and the communities around La Paz and Oso Parkway. Our dispatch for estimates is based on project scope and crew availability, and we typically schedule site walks within a week for most Mission Viejo homeowners.
- Lake Mission Viejo area
- Pacific Hills
- Casta del Sol
- La Paz tract neighborhoods
- Areas off Marguerite Parkway
Service Area – Cities Near Mission Viejo
Square One Builders serves Mission Viejo and the surrounding South Orange County communities. If you are in Coto De Caza, CA, Lake Forest, CA, Laguna Hills, CA, or Rancho Santa Margarita, CA, we cover your area with the same full-scope general contractor approach and the same fixed-price quoting.
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 Remodeling Company in Mission Viejo
For most structural, electrical, plumbing, and roofing work, yes. Mission Viejo pulls permits through the City of Mission Viejo, and HOA-governed tracts add an architectural review on top. We pull the permits, prepare the submittals, and track both so the project does not stall.
Scheduling depends on scope and current crew load. For kitchens and bathrooms we can often start within a few weeks of contract signing; full renovations and ADUs are scheduled further out. Call (877) 688-9930 and we will give you a current start window for your specific project.
Yes. If your tract has an architectural review committee, we prepare the submittal package with material and color documentation, file it, and track it through the review period. We have worked with Lake Mission Viejo Association and the smaller neighborhood associations since 2014.
Call (877) 688-9930 for a free estimate on your Mission Viejo renovation, remodel, or addition. One contractor, every system, from the ground up. Estimates are free and fixed-price once you approve the scope.
What happens when you call
- 1A real person answersNo phone trees — talk to a local construction pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Mission Viejo Customers Say
"Quality construction and a professional operation. Communication was strongest at the site meetings, and slower by email in between."
— Leela Singh"Framing crew was meticulous and the walls are straight everywhere. Drywall goes on a lot better when the framing is right."
— Renee Novak"He was upfront about a soil issue that added cost early rather than absorbing it and surprising us at the end."
— Sanjay Patel