New Construction in Whittier
Most new construction in Whittier starts with a lot that already has a house on it, and the existing structure shapes every early decision. The city grew in layers, from its Quaker-founded core incorporated in 1898 through the postwar tracts that spread across former orange groves, leaving behind a mix of compact Uptown-era houses with separate kitchens and wider-lot tract homes. When a house is too small, sits on a tired foundation, or cannot carry a second story without rebuilding most of it anyway, a tear-down rebuild is often the cleaner path. We handle new construction in Whittier from the first lot review through design, engineering, permits, demolition, and the final inspection, under one contract.
Services We Offer
Engineering & Title 24
Permits & Plan Check
New Build ADUs
Our New Construction Process in Whittier
New construction in Whittier starts with understanding what the lot and the city will allow before a single line gets drawn. We open with a zoning review, a boundary and topographic survey, and a soils report, because what the foundation requires depends entirely on what those documents show. From there, design moves forward: site plan, floor plans, and elevations developed with you until the layout matches how your household actually functions. Structural engineering and Title 24 energy documents are prepared alongside the drawings so the plan set enters the City of Whittier Community Development Department’s Building and Safety Division as a complete submission.
While plans are under review, we respond to any comments, coordinate utility work, and handle the asbestos survey and air district notification required before demolition. If the project sits within one of Whittier’s four locally designated historic districts, exterior scope also moves through a Certificate of Appropriateness process, and we account for that timeline. Once permits issue, the build runs in sequence: foundation, framing, rough plumbing, electrical, mechanical, fire sprinkler lines, insulation, and finishes. One project manager stays on from start through final inspection.
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Permits, Approvals, and Site Conditions for New Construction in Whittier
Permit applications for new construction in Whittier go to the City of Whittier Community Development Department, handled through its Building and Safety Division. A new house typically moves across more than one review desk before the permit issues. Planning checks setbacks, height limits, lot coverage, and floor area ratio against the zoning code. Building plan check reviews the structural drawings and energy documents, the fire department looks at sprinkler systems and site access, and public works covers grading, drainage, any street trenching, and the driveway approach. If an older structure sits on the lot, demolition requires its own separate permit, and most building departments want the gas and electric service disconnected and the sewer lateral capped before that permit is issued. The South Coast AQMD also requires an asbestos survey and advance notification before most demolitions proceed.
Whittier has four locally designated historic districts: Hadley-Greenleaf, Central Park, College Hills, and Earlham. In those areas, exterior work is subject to a Certificate of Appropriateness review, which runs alongside the standard building permit process. Anyone building on a lot within those boundaries, or adjacent to contributing structures in the Uptown era neighborhoods, should expect that layer of review before construction drawings are finalized. The older housing stock throughout Uptown Whittier makes this a practical reality for more lots than homeowners sometimes anticipate.
Utility sizing for a new house starts from scratch rather than carrying over what served the original structure. Required fire sprinklers often call for a larger water meter and service line. A house with modern electrical loads and a solar PV system may need a new utility service, and that upgrade carries its own lead time that should be built into the project schedule. California’s 2025 Title 24 energy standards, which apply to permits filed on or after January 1, 2026, require solar PV on new single-family homes, and certain measures require field verification by a third-party HERS rater. Lots within a CAL FIRE Fire Hazard Severity Zone add another layer: a Class A roof, ember-resistant vents, ignition-resistant exterior cladding, and multipane windows with tempered glass.
Before foundation design begins, a geotechnical report identifies site-specific conditions such as expansive clay, old fill, groundwater depth, and slope stability. In state-mapped liquefaction or landslide zones, a site-specific investigation is required. The structural engineer uses those findings to size footings or design a post-tensioned slab or grade beams, then lays out shear walls, hold-downs, and beams to meet California seismic requirements. On sloped lots, which are common in areas like Friendly Hills and Murphy Ranch, the same report drives the retaining wall design and grading plan. The soils engineer typically signs off on footing excavations before any concrete is placed. From that point, inspections follow each stage of construction: foundation forms and steel, framing, rough mechanical and electrical, insulation, and the final walkthrough.
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 New Construction in Whittier
Horizon Construction and Remodeling has held an active Class B general building contractor license since 2009, and we are licensed and bonded. Before you sign a contract, you can verify our license and bond directly through the CSLB website. New construction is the largest commitment a homeowner makes, so we think that kind of transparency matters from the start.
We work design-build, meaning design, engineering coordination, permits, and construction all sit under one contract with a single project manager. The people who draw your plans are the same people responding to plan check comments and overseeing the build. Permit applications for new homes in Whittier go through the City of Whittier Community Development Department, Building and Safety Division, and if your lot falls within one of the four locally designated historic districts, exterior work will also require a Certificate of Appropriateness. We account for those layers early rather than treating them as surprises later. Title 24 energy requirements, CALGreen standards, and fire sprinkler considerations come into the design at the first sketch.
Call us at (714) 449-9035 and we will look at your Whittier lot and tell you honestly what it can support.
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New Construction FAQ
Should I rebuild or remodel my house in Whittier?
Whether a rebuild or a whole-home remodel makes more sense depends on the condition of the house and what the lot allows. On the wider postwar tracts in areas like Murphy Ranch or Friendly Hills, zoning sometimes permits a larger or better-placed footprint that only a rebuild can deliver. A rebuild tends to make sense when the foundation has serious problems, when nearly every system needs replacing and most walls are moving anyway, or when you want a second story the existing structure cannot carry. If the bones are sound and the project is mainly a new layout and finishes, a whole-home remodel is usually simpler to permit through the City of Whittier Community Development Department. We walk the property with you and give a straight comparison before you commit to either path.
What permits does a new home need?
Replacing an existing house in Whittier typically requires a demolition permit for the structure coming down, a building permit for the new construction, and grading, utility, and driveway permits coordinated through public works. The City of Whittier Community Development Department, and specifically its Building and Safety Division, reviews the plans, with planning, fire, and public works each signing off as well. Lots in a fire hazard severity zone receive additional fire-code review. We prepare all submittals and manage every round of comments and resubmittals.
How long does it take to build a new home?
Custom home timelines vary widely, and design and permitting can take as long as the construction phase itself. Plan check commonly runs several months, and longer when planning review or fire-zone considerations are involved. In Whittier, projects near one of the four locally designated historic districts may also require a Certificate of Appropriateness before permits move forward. Building a custom home often runs around a year, more for larger homes or lots with significant grading. Weather, utility scheduling, and inspection availability all affect the pace, so we give you a schedule specific to your lot after the feasibility review.
What drives the cost of building a new home?
Budget for new construction in Whittier depends most on size, complexity, and site conditions. A two-story plan with long spans and many corners costs more to frame than a simple single-story footprint, and foundation design shifts based on soil type and slope, which varies across neighborhoods from the older Uptown-era lots to the wider postwar parcels in areas like Friendly Hills and Murphy Ranch. Site work covering demolition, grading, retaining walls, and utility upgrades is priced lot by lot. Finish level, city impact fees, and school district fees on new square footage add further variables. Once feasibility is confirmed, we break the budget into those categories so you can see exactly where your decisions affect the total.
Do new homes in California need solar and fire sprinklers?
Yes, new single-family homes in Whittier must include automatic fire sprinklers under the California Residential Code, which affects how water service and ceiling layouts are planned. Solar PV has been required since the 2019 energy standards, and the 2025 Title 24 updates raise the bar further for permits filed from January 1, 2026. CALGreen layers on requirements for water use, construction waste recycling, indoor air quality, and EV charging readiness. We account for all of it before the first drawing goes to the City of Whittier Building and Safety Division.
Can you build an ADU along with the new house?
Building an ADU alongside new construction is the most efficient approach because water, sewer, and electrical service can be sized for both units in a single design. The site plan can give each unit a private entry and outdoor space from the start, which is harder and more expensive to retrofit later. State law allows ADUs on most single-family lots, though setbacks, height, and parking rules still apply, and in Whittier those details run through the Building and Safety Division. We permit the ADU together with the main house or as a separate project, and we build guest houses as well.
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Horizon is a licensed Class B general building contractor serving Whittier and the surrounding Los Angeles County communities.