New Construction in Monrovia
A tear-down rebuild is often the cleaner path when a house is too small, sits on a tired foundation, or cannot carry a second story without rebuilding most of it anyway. That situation is common in Monrovia, where most lots already carry an older foothill house sized to the streetcar and 1920s eras, built in waves from the 1886 townsite boom through the Pacific Electric years and the permit-record year of 1923. Horizon Construction and Remodeling manages new construction in Monrovia from the first lot review through design, engineering, permits with the City of Monrovia Community Development Department Building Division, demolition, and final inspection, under one contract.
Services We Offer
Engineering & Title 24
Permits & Plan Check
New Build ADUs
Our New Construction Process in Monrovia
New construction in Monrovia often starts on lots where an older streetcar-era or 1920s home already stands, so before a floor plan takes shape we commission a zoning review, a boundary and topographic survey, and a soils report to confirm what the ground and the city’s rules will support. Structural engineering and Title 24 energy documents are prepared alongside the drawings, keeping the plan set complete when it goes to the City of Monrovia Community Development Department Building Division for plan check. If the existing house carries a historic landmark designation under the city’s 1995 preservation ordinance, that review process runs concurrently and we coordinate accordingly.
While plans are in review we answer department comments, arrange utility work, and schedule any asbestos survey and air district notification required before demolition. Once permits issue, the sequence runs in order: foundation, framing, rough plumbing, electrical, mechanical and fire sprinkler lines, insulation, then exterior and interior finishes. One project manager oversees the work from the first inspection through final sign-off.
Read More →
Building a new house in Monrovia means working through a layered review process at the City of Monrovia Community Development Department Building Division. Planning looks at setbacks, height, lot coverage, and floor area. Building plan check reviews structural and energy documents. The fire department addresses sprinklers and site access, while public works covers grading, drainage, street trenching, and driveway approaches. If there is an existing structure on the lot, demolition requires its own 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 for most demolitions. Monrovia has designated 164 historic landmarks under its 1995 preservation ordinance, and any work on those properties goes through a Certificate of Appropriateness review, with Mills Act contracts available to qualifying owners.
Utility work follows the scope of the new house, not the old one. Fire sprinklers, now standard on new construction, often require a larger water meter and service line. A bigger home with modern electrical loads and a solar array may need a new service from the utility, and that coordination carries its own lead time that should be factored into the schedule early.
A geotechnical report is completed before foundation design begins. It identifies expansive clay, old fill, groundwater conditions, 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, design a post-tensioned slab or grade beams, and lay out the shear walls, hold-downs, and beams that California’s seismic requirements demand. On sloped lots, which are common along Monrovia’s foothill edges near Canyon Park, the same report drives the retaining wall design and grading plan, and the soils engineer typically signs off on footing excavations before any concrete is placed.
Energy compliance follows 2025 Title 24 standards, which apply to permits filed on or after January 1, 2026. New single-family homes must include solar PV, and some measures require field verification by a third-party HERS rater. Lots in a CAL FIRE Fire Hazard Severity Zone are built to wildland-urban interface standards: a Class A roof, ember-resistant vents, ignition-resistant exterior materials, and multipane windows with tempered glass. Inspections run from foundation forms and steel through framing, rough-ins, and insulation to the final sign-off.
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 Monrovia
Horizon Construction & Remodeling Inc. has been building in Southern California since 2009, and we hold a Class B general building contractor license, which covers the full range of trades a new home requires. We are licensed and bonded, and you can verify our standing directly through the CSLB before any contract is signed. A ground-up home is the most complex residential project there is, and we treat it that way from the first conversation.
We work design-build, meaning design, engineering coordination, permitting, and construction all run under one contract with one project manager. That structure matters in a city like Monrovia, where permits move through the Community Development Department Building Division and plan check comments can arrive at any stage. Requirements such as fire sprinklers, solar readiness, and CALGreen compliance get built into the drawings from the start rather than surfacing later as change orders.
Monrovia’s housing stock skews older, with many homes sized to the streetcar and 1920s eras rather than to the open floor plans most families want today. Building new here also means understanding the city’s historic preservation framework, since work near any of its 164 designated landmarks can trigger additional review. Call (714) 449-9035 to talk through what your Monrovia lot can support.
Schedule a Consultation
New Construction FAQ
Should I rebuild or remodel my house in Monrovia?
Whether a rebuild or a whole-home remodel makes more sense depends on the condition of the house and what the lot allows. A new build tends to be the right call when the foundation has serious problems, when nearly every system needs replacing and most walls would move anyway, when you want a second story the existing framing cannot carry, or when zoning allows a larger or better-sited structure. In Monrovia, where much of the housing stock dates to the streetcar and 1920s eras, older foothill homes sometimes carry structural limitations that make a full rebuild more practical than working around them. If the bones are sound and the goal is mainly a new layout and finishes, a whole-home remodel is usually the simpler path to permit through the City of Monrovia Community Development Department Building Division. We walk the property with you and give you a straight comparison of both options before you commit to anything.
What permits does a new home need?
New construction in Monrovia typically requires a demolition permit for the existing structure, a building permit for the new one, and grading, utility, and driveway permits from public works. Plans go through the City of Monrovia Community Development Department Building Division, with planning, fire, and public works departments also signing off. Properties in a fire hazard severity zone, including some foothill parcels common to the area, receive added fire-code review. We prepare the submittals and manage all comments and resubmittals.
How long does it take to build a new home?
Design and permitting often take as long as building the house itself. Plan check through the City of Monrovia Community Development Department Building Division commonly runs several months, and the timeline stretches further when planning review, hillside conditions, or fire-zone requirements are part of the picture. Construction of a custom home typically runs around a year, with larger footprints, sloped lots, and significant site work adding more time. Weather, utility scheduling, and inspection availability all play a role, so we provide a project-specific schedule after the feasibility review.
What drives the cost of building a new home?
Budget for new construction in Monrovia is driven by several overlapping factors, and understanding them early prevents surprises later. Square footage, a second story, long structural spans, and an irregular footprint all push costs up before finish selections are even discussed. Foundation design depends on soil conditions and slope, which vary considerably across the foothills and canyon-adjacent lots here. Site work, including demolition, grading, retaining walls, and utility upgrades, shifts from parcel to parcel. City and school district impact fees apply to new square footage, and if your property carries a historic landmark designation under Monrovia’s preservation ordinance, a Certificate of Appropriateness review adds a layer to the process. Fire-zone material requirements can affect both the budget and the material schedule. Once we complete a feasibility review, we break the numbers into these categories so you can see exactly where your decisions have the most weight.
Do new homes in California need solar and fire sprinklers?
Yes, new single-family homes in Monrovia must meet several statewide requirements, and we design to all of them from the start. The California Residential Code requires automatic fire sprinklers in new one- and two-family homes, which affects both water service size and ceiling layout. Solar PV has been mandatory under the 2019 energy standards, and the 2025 Title 24 updates apply to permits filed from January 1, 2026. CALGreen adds rules covering water use, construction waste recycling, indoor air quality, and EV charging readiness.
Can you build an ADU along with the new house?
Yes, adding an ADU during new construction is the most straightforward approach. Sizing water, sewer, and electrical service for both units at the same time avoids the cost of going back later, and the site plan can be drawn from the start to give each unit a private entry and usable outdoor space. State law permits ADUs on most single-family lots, though setbacks, height limits, and parking requirements still apply and are reviewed by the City of Monrovia Community Development Department Building Division. We can permit the ADU alongside the main house or carry it as a separate project, and we build guest houses as well.
Explore More in Monrovia
Horizon is a licensed Class B general building contractor serving Monrovia and the surrounding Los Angeles County communities.