Whole Home Remodeling in Westminster
Whole home remodeling in Westminster tends to draw homeowners who have already decided they are staying put. The house sits on a good flat lot, the neighborhood is familiar, and the location works. What doesn’t work is the house itself. Westminster’s residential streets are filled with modest postwar tract homes, most of them built during the wave of development that ran through the 1950s and into the 1960s, and those houses were designed for a different era. The floor plans are chopped up, the kitchens are small and cut off from the rest of the living space, and the plumbing and wiring behind the walls have not kept pace with how a household actually runs today.
A whole home remodel addresses all of that as a single coordinated project rather than a series of disconnected jobs spread over several years. We move walls to open the floor plan, update the plumbing and wiring, rework multiple rooms at once, and pull one permit that covers the full scope of work through the City of Westminster Building Division. Doing it that way keeps the disruption concentrated, lets every trade sequence correctly, and produces a house that fits together rather than one that was patched together over time.
Services We Offer
Structural & Seismic Work
Roof, Windows & Envelope
Additions & ADUs
Our Whole Home Remodeling Process in Westminster
A whole home remodel in Westminster starts well before anyone picks up a hammer. Because most homes here were built during the tract construction that ran from the 1950s into the 1960s, we begin every project with a full walk-through of the entire house, not just the rooms on your wish list. We look at the attic, the crawl space or slab, the electrical panel, and the supply lines. Where something is uncertain, we investigate before we draw anything. That means a sewer camera if the drain lines are original cast iron, asbestos testing on textured ceilings common in postwar construction, and a structural review of any framing that may have been altered over the decades. Getting those answers early keeps the budget honest.
Once we know what we are working with, we draw the existing house and the proposed new layout so you can review and revise everything on paper, where changes cost nothing. Structural engineering calculations and the Title 24 energy compliance documents go into the same plan set, and we submit that complete package to the City of Westminster Building Division for a single permit. All finish selections, cabinets, tile, flooring, and fixtures for every room, are made at the Horizon Design Center in Fullerton before demolition begins, so materials are confirmed and lead times are accounted for before the project opens up your walls.
Construction follows a fixed sequence: demolition, structural work, rough plumbing, electrical and HVAC rough-in, inspections, insulation, drywall, and finishes. Because the entire house is covered under one coordinated plan, the plumber reroutes lines once and the new flooring runs continuously through the house without a threshold where an old project stopped. One project manager from Horizon carries the job through every trade, every inspection, and the final walk-through with you and the building inspector.
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A whole home remodel in Westminster almost always requires a full building permit with plan check, because the work touches structure, plumbing, electrical and mechanical systems at the same time. All of that goes through the City of Westminster Building Division within the Community Development Department. One practical point worth knowing early: no unusual local overlay applies here, so the California Building Code and any applicable association rules are what govern your project. We review both against your scope at the very start, since they can shape exterior material choices, setbacks and the review path before a single wall comes down. Getting that right on paper saves time once the permit is in process.
The age of the house drives most of what we find once work begins. Westminster’s postwar tract homes, the majority of them built through the 1950s and into the 1960s, were constructed with materials and wiring methods that are now decades past their intended service life. Homes built before 1978 may contain lead-based paint, and federal EPA Renovation, Repair and Painting rules require specific work practices any time that paint is disturbed. Popcorn ceilings, certain resilient flooring and older duct wrap can also contain asbestos, so suspect materials are tested before any demolition, and removal is handled by a licensed abatement contractor. Galvanized steel supply lines and undersized electrical panels show up regularly in houses of this era, and a whole home remodel is the right time to address them while the walls are already open.
Two state-level code items come up on nearly every permitted whole house job in California. Civil Code 1101.4 requires that older high-flow toilets, showerheads and faucets be replaced with water-conserving fixtures on many permitted remodels of homes built before 1994, so we include it in the fixture schedule from the start rather than catching it at final inspection. California’s Title 24 energy code applies to remodels as well as new construction, covering new windows, insulation, lighting and HVAC changes, and we prepare the compliance documentation with the permit drawings.
Structure is often the biggest variable inside these homes. Removing a load-bearing wall to open a kitchen or living area requires an engineered beam, proper posts and sometimes new footings. Raised-floor foundations common in older Westminster tracts can also benefit from seismic bolting and cripple-wall bracing while the work area is accessible. Unpermitted additions, enclosed patios and garage conversions from past decades are common throughout the city, and they typically need to be legalized, brought up to code or rebuilt before the Building Division will sign off on the rest of the house. If additional space is part of the plan, state law allows an ADU on most single-family lots, and that work can be coordinated alongside the remodel.
Other Remodeling Services We Offer
A kitchen remodel touches more trades than any other room in the house: layout, cabinetry, plumbing, electrical, ventilation and finishes. Horizon designs and builds kitchen remodels under one contract, from the measured layout to the final inspection.
Whether you envision a classic Southern California pool or a fully customized backyard oasis, Horizon Construction & Remodeling delivers the highest level of quality and service. Our comprehensive pool design and remodeling services cover everything from layout and decking to built-in BBQs and final touches like landscaping. Let Horizon be your trusted partner in transforming your backyard into the perfect outdoor retreat.
If you are planning a complete bathroom remodel or simply want to change your tub, shower, update your plumbing fixtures, or make the space more efficient, our team at Horizon will help you through the process with expert advice, professional craftsmanship, and affordable options with beautiful results. Learn more about our bathroom remodeling services.
Transform your space with our expert interior work services. We offer a comprehensive range of solutions — from space planning and custom design to the selection of high-quality finishes and materials. Our team of experienced professionals works closely with you to create a space that’s both functional and stylish, tailored to your unique needs, goals, and budget. Whether you’re updating a single room or overhauling your entire interior, we bring precision, creativity, and craftsmanship to every project.
At Horizon, we believe your home is more than just four walls — it’s where life happens. It’s the place you relax, gather with family and friends, and create lasting memories. That’s why we offer a full range of exterior work services designed to elevate your outdoor living space. From patios and hardscaping to custom decks and exterior renovations, we help turn your vision into a dream yard that complements your lifestyle and enhances curb appeal.
At Horizon Construction & Remodeling, our expert team includes a dedicated design and planning division that works hand-in-hand with licensed architects and structural engineers. We take care of everything — from detailed plans and blueprints to securing city permits — so you don’t have to deal with delays or red tape. Our goal is to streamline the process and provide a fully approved set of documents that aligns with both your vision and city regulations, saving you time and stress.
Why Choose Horizon Remodeling For Whole Home Remodeling in Westminster
Homeowners in Westminster hire us for whole home remodeling because a project that touches multiple rooms, multiple trades, and structural work is exactly what a Class B general building contractor license is designed to cover. We have held that license since 2009, and we are bonded. One license, one contract, one project manager overseeing everything from the first permit application to the final inspection.
The design-build side of how we work matters more than people expect. The drawings, the engineering coordination, the permits, and the construction all sit under the same roof and the same agreement. You are not passing messages between an architect in one office, a structural engineer in another, and three separate trade contractors who have never met. The people who laid out your floor plan are the same team talking to the crew framing the walls. Finishes for every room are selected together at our design center in Fullerton, which keeps the kitchen, the bathrooms, and the flooring reading as one consistent house rather than a collection of separate jobs.
We are also straightforward about the parts of a remodel that are uncomfortable to discuss. We will tell you plainly whether living in the house during construction is realistic for your situation, what an older home typically hides behind the drywall that needs to be addressed, and which items on your wish list can be deferred without costing you more down the road. That kind of honesty is something Westminster homeowners tell us they do not always get from the first contractor they call.
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Whole Home Remodeling FAQ
How is a whole home remodel different from a regular home remodel?
A typical remodel focuses on one room, like a kitchen or a bathroom, and leaves the rest of the house untouched. A whole home remodel treats the house as one connected system. Walls come down, the floor plan changes, and plumbing, electrical, and HVAC are updated throughout, all drawn, permitted, and sequenced together so trades move through once instead of reopening finished work later. For the postwar tract homes common in Westminster, that coordinated approach often makes more sense than stringing together separate projects over several years.
What's the difference between a whole home remodel and a complete home renovation?
The two terms overlap more than most people realize. A remodel typically means changing layouts and finishes, while a renovation focuses on restoring the house itself, covering structure, windows, plumbing, wiring, and heating and cooling. Most whole home remodeling projects in Westminster end up being both, especially in the postwar tract houses that make up a large share of the city’s housing stock, where aging systems often need attention before new finishes go in. We scope both together, addressing anything that protects the house first, then systems that become hard to reach once walls close, then the finishes you see every day.
Do we have to move out during a whole home remodel?
Whether you need to move out depends on the scope of work and how the project is phased. If the kitchen and every bathroom are being rebuilt at the same time, or drywall and flooring are coming out through the whole house, most families leave for at least the heaviest stretch of construction. Many of Westminster’s postwar tract homes are compact enough that a full gut makes staying uncomfortable and impractical. If the work can be sequenced to keep one bathroom running and a temporary kitchen set up, some homeowners do stay, though phasing adds time to the overall schedule. We walk through that trade-off once the plan is drawn.
How long does a whole home remodel take?
A whole home remodel typically runs several months in construction alone, and design plus plan check with the City of Westminster Building Division can take just as long before a single wall gets touched. Many of Westminster’s postwar tract homes from the 1950s and 1960s reveal hidden conditions once walls open up, and that can add time. We build a schedule specific to your house with the proposal, and getting drawings started early is the single biggest lever on your move-back-in date.
Who handles the permit for a whole home remodel in Westminster?
We handle the permit. For a whole home remodel in Westminster, that means submitting to the City of Westminster Building Division within the Community Development Department. Our team prepares the plan set, including structural engineering and Title 24 energy documents, then responds to plan-check comments until the permit is issued. During construction we schedule and attend all required inspections and close out the permit at final. If an HOA also applies to your property, we build that review into the project schedule.
What drives the cost of a whole home remodel?
Cost comes down to the scope of structural and systems work your specific house needs, and two homes the same size can land far apart in price. Removing a load-bearing wall, relocating a kitchen or bathroom on a slab foundation, repiping, rewiring, panel upgrades, and any lead or asbestos handling all move the number significantly. Many of Westminster’s postwar tract homes from the 1950s and 1960s need at least some of that systems work. Added square footage and the finish level you choose add more. Our proposals break every item out line by line.
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Horizon is a licensed Class B general building contractor serving Westminster and the surrounding Orange County communities.