Design Center & Showroom · 614 S Euclid St, Fullerton · Mon–Fri 9am–5pm

New Construction and Custom Rebuilds

New Home Construction and Custom Rebuilds in Orange County and LA

New home construction in Orange County and LA: tear-down rebuilds and ground-up custom homes on your lot, from feasibility and permits to final inspection.

Plan Your Project

Tell us about the house. A project manager will call to set up a walk-through.

Prefer to talk? Call (714) 449-9035

18+Years building in Southern California
1,500Projects completed
A+BBB rating

New home construction in Orange County rarely starts with an empty field anymore. It usually starts with a lot someone already owns, a house that’s past saving or too small to fix, and a family that wants to stay on that street. Horizon Construction & Remodeling builds new homes and full tear-down rebuilds on lots like that across Orange County and Los Angeles County.

We’re a licensed Class B general building contractor with more than 18 years in Southern California construction. On a new build, we take the project from the first feasibility check through design, engineering, permits, demolition, construction and the final inspection.

Rebuild or Remodel?

This is the first question on most of our new-construction calls, and the honest answer is that it depends on the house and the lot. A rebuild tends to make sense when:

  • The foundation has serious problems, or the house sits on an old raised floor that would need major structural work anyway
  • You’d be replacing nearly every system and finish, plus changing most of the walls
  • The layout can’t be fixed without moving the house’s footprint
  • You want a second story and the existing structure can’t carry one without extensive reinforcement
  • The lot allows a much larger or better-placed house than the one on it

If the bones are good and you mostly want a new layout and new finishes, a whole home remodel or complete renovation usually gets you there for less and with a simpler permit. We’ll walk the property and give you a straight comparison before you commit either way.

Start with What the Lot Allows

Before anyone draws a house, we look at what the city’s zoning code will let you build. That means setbacks from each property line, maximum height, lot coverage and floor area limits, and parking requirements. In some neighborhoods there are also design guidelines or an HOA with its own architectural rules.

We also check for conditions that change the scope:

  • Coastal zone. Properties near the ocean may need a coastal development permit from the California Coastal Commission or the city.
  • Fire hazard severity zones. Hillside and canyon lots in both counties often fall in mapped zones that require ignition-resistant construction. CAL FIRE’s fire hazard maps show where those rules apply.
  • Soils and grading. A geotechnical report tells the structural engineer what the foundation needs. Sloped lots may need a grading permit.
  • Utilities. The size and location of the water, sewer, gas and electrical connections affect cost and layout.

That feasibility work is what keeps a new-build design from being redrawn three times in plan check.

New home construction orange county project by Horizon Construction & Remodeling

How a New Home Build Runs

  1. Feasibility and survey. Zoning review, a boundary and topographic survey, and a soils report.
  2. Design. Floor plans, elevations and site plan, developed with you until the house fits how you live.
  3. Engineering and energy compliance. Structural calculations and Title 24 energy documents. New single-family homes in California must meet the Building Energy Efficiency Standards, including solar PV requirements, and the 2025 standards apply to permits filed on or after January 1, 2026.
  4. Plan check and permits. Plans go through the building department and often planning, fire and public works. We handle the comments and resubmittals.
  5. Demolition. In Southern California, the air district requires a notification before most demolitions, and an asbestos survey comes first. South Coast AQMD Rule 1403 covers how that’s done.
  6. Foundation and framing. Forms, steel, inspections and pour, then the framing package, shear walls, roof structure and sheathing.
  7. Rough-in. Plumbing, electrical, mechanical and fire sprinkler lines, each inspected before the walls close.
  8. Exterior and interior finishes. Roofing, windows, stucco or siding, insulation, drywall, cabinets, tile, flooring, fixtures and paint.
  9. Final inspection. The building department signs off and the house is ready to move into.

Code Requirements That Shape a New California Home

A new house built today looks different from one built even ten years ago, partly because the codes changed. A few requirements surprise people:

Fire sprinklers. The California Residential Code requires automatic fire sprinklers in new one- and two-family homes. That affects your water service size and ceiling layout.

Solar. New single-family homes have needed solar PV since the 2019 energy standards took effect, and the current standards build on that.

CALGreen. The California Green Building Standards Code sets requirements for water use, construction waste recycling, indoor air quality and EV charging readiness.

Impact and school fees. Most cities and school districts charge fees on new square footage. They vary a lot by city, so we flag them early in the budget.

We design to these requirements from the first sketch, so they don’t turn into change orders during construction.

A Torrance ADU Built from the Ground Up

Adding an ADU to a New Build

If you’re building new, it’s the easiest time to add an accessory dwelling unit. Utilities can be sized for both units at once, and the site plan can give each its own entry and outdoor space. State law makes ADUs allowed on most single-family lots, and the California Department of Housing and Community Development publishes the current rules. See our ADU and additions page for more.

New Home Construction and Custom Rebuilds work by Horizon Construction & Remodeling

What Drives the Cost of a New Home

We don’t publish per-square-foot prices for new construction, because they don’t hold up. The biggest variables are:

  • Size and complexity of the house, especially second stories, large spans and lots of corners
  • Foundation type, which depends on soils and slope
  • Site work: demolition, grading, retaining walls, utility upgrades
  • Agency requirements, such as coastal or fire-zone construction
  • Finish level throughout
  • Fees, which vary by city and school district

After feasibility, we put together a detailed budget broken into those categories so you can see where the money goes and where you have choices.

Why Build with Horizon

  • One team from survey to final. Design, engineering coordination, permits and construction under one contract.
  • Licensed and insured. Class B license active since 2009, contractor’s bond on file, workers’ compensation. Check our license.
  • Local permit experience. Years of plan check with city building departments across Orange County and Los Angeles County, plus OC Public Works and EPIC-LA for unincorporated areas.
  • Selections in one place. The Horizon Design Center in Fullerton has cabinetry, tile, stone and fixtures you can see in person.
  • Recognized work. NARI and NKBA member, A+ BBB rating, and Best of Houzz recognition across multiple years.

Where We Build

We build throughout Orange County and Los Angeles County, including Newport Beach, Costa Mesa, Huntington Beach, San Clemente, Villa Park, Yorba Linda, Manhattan Beach, Rancho Palos Verdes and La Cañada Flintridge. See all Orange County and Los Angeles County service areas.

New Home Construction and Custom Rebuilds work by Horizon Construction & Remodeling

New Construction Service Areas

We work across four Southern California counties. Each county page links to the city pages, with local permit and housing details for every city we serve.

Frequently Asked Questions

Still have a question?

Talk to a project manager. No pressure, no sales pitch.

Call (714) 449-9035

Design and permitting can take as long as construction, especially when planning review or a coastal permit is involved. We’ll give you a schedule for your lot after the feasibility review.

Yes. Most clients stay put through design and permitting, then move out shortly before demolition.

We can do a feasibility review on a lot you’re considering buying, so you know what can be built before you close.

No. Our team handles design and brings in engineers as needed. If you already have an architect or a finished plan set, we’ll build from it.

Generally, new construction is assessed when completed. The Board of Equalization explains reassessment rules, and your tax advisor can tell you how they apply to your project.

Yes, either with a new home or on their own.

Thinking about building new? We’ll look at your lot and tell you what it can hold. Schedule a consultation or call (714) 449-9035.