







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Simi Valley, CA
Mason Remodeling handles kitchen, bath, and whole-home projects across Simi Valley with a written price delivered before any work begins. Homeowners here deal with a specific mix of 1960s and 1970s tract homes, hillside lots with drainage quirks, and HOA requirements that change from one neighborhood to the next. If you’re planning a remodel, call (803) 680-2547 to schedule a free estimate. We’ll walk the project with you, explain what Simi Valley’s building department will want to see, and put every dollar in writing before you commit to anything.
Why Simi Valley Homes Are Different

Most Simi Valley housing stock dates from the 1960s through the 1980s, which means three things on nearly every remodel: original galvanized plumbing that’s near the end of its service life, electrical panels sized for a much lighter appliance load, and floor plans that were built before open-concept living became standard. Homes in the older pockets near the 118, around Sycamore Drive and Cochran Street, often have slab foundations, so relocating a kitchen sink or adding a bathroom means cutting concrete rather than running lines through a crawlspace.
Simi Valley’s summer heat and Santa Ana winds shape exterior and window decisions. Stucco is the dominant exterior, and it holds up well to the dry heat, but old single-pane windows in those 70s-era homes let conditioned air escape fast. Hillside lots in areas like Wood Ranch and Big Sky face erosion and drainage rules that flat neighborhoods never deal with. Some HOAs, especially in Wood Ranch and the newer developments off Madera Road, require design review before you can change exterior paint, windows, or rooflines. We account for that approval timeline in the schedule so it doesn’t surprise you mid-project.
Styles & brands we work with







Our Main Simi Valley Services
Three services carry most of the calls we get from Simi Valley homeowners. Each one has its own page with pricing, timeline, and what to expect.
General Contractor in Simi Valley
A general contractor holds the project together: permits, scheduling, subcontractors, inspections, and the daily walkthrough that catches mistakes before they’re buried behind drywall. In Simi Valley, that often means coordinating with the city’s building department on hillside foundation or retaining wall questions, and pulling the right trade specialists for electrical and plumbing work in older homes. If you’re planning an addition, a structural change, or a project with more than two trades involved, start with our General Contractor in Simi Valley page. It covers what a GC actually does and what to ask before you sign.

Bathroom Remodeling in Simi Valley
Simi Valley bathrooms from the 70s and 80s are compact by today’s standards, so a good remodel is usually about working smarter within the original footprint: niche storage, curbless showers, and vanities sized for real daily use rather than photo shoots. Water damage hiding behind old tile and failing shower pans is common in this housing era, and we scope for it during the estimate so it doesn’t become a surprise change order. Our Bathroom Remodeling in Simi Valley page walks through the cost, typical timeline, and what a tile-ready shower really requires.

Home Remodeling in Simi Valley
Whole-home remodels in Simi Valley usually happen because the floor plan fights the way a family actually lives now. Kitchens cut off from the living space, a bedroom that should be a home office, a garage that needs to become a guest suite. These projects touch framing, electrical, insulation, and often exterior work, and they need a single point of accountability across all of it. Visit our Home Remodeling in Simi Valley page for the full scope of what a whole-home project includes and where the budget typically goes.

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.
Brands We Service in Simi Valley
Simi Valley homeowners who choose prefab or panelized construction often ask about Abodu and Cover for ADUs, and Dvele for high-efficiency panelized homes. Our crews service these systems alongside traditional stick-framed work. Parts and materials are stocked through our regional suppliers, and standard components typically arrive within a week. Learn more on our brands page.
See the difference
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AfterPricing for Remodeling Company in Simi Valley, CA
| Service | Typical range in Simi Valley |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Countertop Installation | $2,000 – $6,500 |
| Window Replacement | $4,500 – $15,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Roof Replacement | $8,000 – $20,000 |
Simi Valley pricing gets pushed upward by hillside access, older slab foundations that require concrete cutting, and HOA-required design reviews that add time to the front end. Our written price is delivered before any work starts, on every project, every time. That number covers the scope we agreed on, and it doesn’t grow on the final bill unless you change the scope yourself.
Neighborhoods We Serve in Simi Valley

We work throughout Simi Valley, from the older neighborhoods near the 118 to the newer developments along the west side.
- Wood Ranch
- Big Sky
- Texas Tract
- Central Simi Valley
- Indian Hills
We schedule most estimates within a few business days across the whole Simi Valley area, with the shortest lead times in the central and eastern neighborhoods.
Service Area – Cities Near Simi Valley
Mason Remodeling also serves homeowners in Moorpark, CA, Oak Park, CA, Thousand Oaks, CA, and Westlake Village, CA. If you’re in one of those cities and planning a remodel, the same written-price standard applies. Dispatch and scheduling are coordinated from our Los Angeles office, with crews serving Simi Valley locally.
Serving Simi Valley, CA - Our Local Coverage Area
We’re based in the Simi Valley 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 Simi Valley

Most projects start within two to four weeks after the estimate and contract are signed. That lead time covers permit submittal where required and material ordering. HOA design review, common in Wood Ranch and other newer Simi Valley communities, can add one to three weeks. Call (803) 680-2547 to get a clear start-date estimate for your specific project.
Yes, on both counts. We pull city permits from Simi Valley’s building department when the scope requires them, and we prepare and submit whatever documentation your HOA asks for. You’ll know before we start whether your project needs design review, and what that timeline looks like. Call (803) 680-2547 and we’ll walk your project through the process.
If anything we built or installed is not right within 365 days from the completion date, we make it right at no cost to you. The written guarantee states exactly what’s covered, what’s excluded, and for how long. If a repair or installation fails, you get a free return visit, no dispute process, no conditions. Call (803) 680-2547 to talk through your project and get a free estimate.
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 Simi Valley Customers Say
"Good work on the hall bath. They found a rotted subfloor, which added cost, but showed me photos and a clear price first."
- Neil P."Great quality tile work. The countertop template slipped by a week, but the project lead explained and kept us updated."
- Susan Y."Basement refinish with egress window. Drywall finish is smooth and the electrician was tidy."
- Kyle S.











