top of page

Home Remodeling in Simi Valley

Whole-home remodeling, additions and garage conversions for Simi Valley tract homes, from design through inspection with one licensed contractor.

Home Remodeling in Simi Valley, CA - Master Construction

The classic Simi Valley remodel starts with a compartmentalized floor plan from 1972 and ends with an open kitchen, new systems and a house that finally works the way its owners live. We have run that transformation, and dozens of variations on it, across Ventura County since 1994 as a licensed general contractor (Lic. #1027281), with our own crews in every major trade. The county practice is on our home renovations page; this page covers how it plays out in Simi Valley.

Remodeling a House Whose Systems Are All the Same Age

A whole-home remodel in this city is really two projects wearing one name. The visible one is walls coming down, a new kitchen, updated bathrooms and flooring throughout. The invisible one is the original systems, all installed the same year and all aging on the same schedule: galvanized pipe, an undersized panel, ducts from the first energy code or none at all. A remodel that ignores the second project buries fifty-year-old infrastructure behind brand-new finishes.

So our scoping walks both lists. Which walls open anyway, and what should be replaced while they are open? What does the panel need before the new appliances arrive? Where do duct runs and returns want to be once the floor plan changes? The cheapest moment to fix any of it is mid-remodel, and the most expensive is the year after.

We put the likely findings in the contract as priced line items at the start, which is why our remodels end near their original budgets and the horror stories you have heard tend to involve other people's contractors.

Heat Changes How a Remodel Should Be Designed

Opening up a floor plan changes how air moves through a house, and in the hottest city we serve that is not a footnote. A great room made from three small rooms often means the existing cooling system is now the wrong size or the ducts are in the wrong places, not simply old. We design comfort into the new layout, duct routing, return air, attic insulation, shading for the big new glass everyone wants on the yard side, as part of the remodel rather than as a separate job later, because retrofitting comfort into a finished house costs multiples of designing it in.

Additions follow the same logic plus structure: foundations, roof tie-ins that do not leak, and stucco and finishes matched so the addition reads as original. Garage conversions and ADUs, hugely popular across Simi Valley, get the full treatment, insulation to living standards, fire separation, a subpanel, their own cooling, so the new space is genuinely livable in August, not just technically finished.

Families stay in these houses while we work. Phasing keeps a kitchen or a bathroom functional at every stage, dust barriers hold the line, and the schedule states which rooms are lost when.

One Contract, One Schedule, One Number to Call

Whole-home remodels collapse when four contractors share one house. Our plumbers, electricians, framers, drywall finishers and painters work for the same company on the same schedule, so the classic failure, each trade waiting on another company's callback, does not exist here. You get a single fixed contract, a schedule you can hold us to, and one person who answers for all of it.

Property managers and boards use this page's service in their own way: unit renovations between long tenancies, accessibility retrofits, and repositioning projects where several units get the same scope. Those clients get per-unit pricing that holds across the run, certificates of insurance, and scheduling built around occupancy rather than around us.

Permits for structural changes, additions and conversions run through the City of Simi Valley, whose process reviews a submittal for completeness before plan check fees are invoiced. Our packages go in complete, with engineering attached, which routinely saves the second wait. We track corrections and walk every inspection through final sign-off.

Home Remodeling Services in Simi Valley

  • Whole-home & multi-room remodels
  • Open-concept floor plan conversions
  • Room additions & second stories
  • Garage conversions & ADUs
  • Kitchen & bathroom renovation
  • Repipe, rewire & panel upgrades in-scope
  • Duct, insulation & comfort redesign
  • Phased schedules for occupied homes
  • Multi-unit renovation programs
  • Engineering, permits & inspections handled

Simi Valley Home Remodeling - FAQ

Where should a remodel of a 1970s house start?

With a systems assessment, before any design falls in love with a layout. Panel capacity, pipe condition, ducts and insulation determine what the budget must carry beneath the finishes. An hour of inspection up front is the difference between a plan and a wish, and we do it at the first walkthrough.

Can you really open up these tract floor plans?

Almost always. The walls between kitchen, dining and living rooms are the usual targets, and each is either simple, bearing, or full of pipes and ducts, three different prices for the same-looking wall. We identify which is which before the design is final, so the open plan you approve is one we have already engineered.

Is a garage conversion or an addition the better way to add space?

The garage is faster and cheaper: the roof, slab and three walls exist. An addition preserves parking and storage and can be shaped exactly to need. Lot, budget and how you use the garage decide it, and we price both paths honestly since we build both every year in Simi Valley.

Do we have to move out during a whole-home remodel?

Usually not. We phase the work so a kitchen or bathroom stays functional at every stage, seal active zones behind dust barriers, and keep the AC running through summer phases. Full gut remodels are the exception where temporary housing genuinely pays for itself in speed, and we will tell you if yours is one.

What does a remodel like this cost?

Ranges are wide because scope is wide: cosmetic multi-room updates, opened floor plans with systems work, and additions each live in different brackets. What we promise is a fixed, itemized contract before work starts, likely hidden conditions priced as line items, and no pretending the systems project is not part of the number.

How long will the city's review take?

Simi Valley checks submittals for completeness first, then invoices plan check fees, then reviews, so a thin package waits twice. Our submittals go in complete with engineering attached, and we use the review window for material orders so the calendar overlaps. Construction itself runs two to six months for most whole-home scopes.

Can a property manager run several unit remodels through one contract?

Yes, and it is the efficient way to do it: one scope approved once, per-unit pricing that holds from first to last, materials ordered in bulk, access coordinated with your office, insurance certificates on file, and one contact reporting progress across the whole program.

Related Services

Zooming in on one room? See kitchen remodels in Simi Valley, bathroom remodels, design-build, or the whole Simi Valley lineup.

Ready for the Floor Plan You Actually Want?

Call (805) 667-8800 for a walkthrough that covers the finishes and the systems, with materials at our Ventura showroom.

bottom of page