#1 ADU Contractor in Hemet
Custom Builds by Horizon Remodeling
Horizon Construction & Remodeling Inc. builds accessory dwelling units and room additions for homeowners in Hemet, giving you additional living space or a rentable unit without the stress of managing the process yourself. We coordinate design, budgeting, permitting, and material selection from start to finish. Because Hemet grew rapidly through the 1980s and early 2000s, many single-story ranch homes on slab foundations have the lot space to support a detached or attached ADU. Permits for site-built work go through the City of Hemet Building and Safety Department, and we handle that process on your behalf.
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How Our ADU Process Works
When it comes to enhancing your living space, room additions combined with Accessory Dwelling Unit (ADU) construction offer unparalleled versatility and value. These projects not only increase square footage but also provide additional living accommodations, whether for extended family, rental income, or work-from-home setups, making them a popular choice for homeowners seeking to maximize their property’s potential. According to California’s Department of Housing and Community Development, ADUs are a key solution to expanding housing options in urban and suburban neighborhoods.
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If you are searching for an adu contractor in Hemet, the first thing worth understanding is how state law now shapes what you can build and how quickly the city must act on your application. California moved its ADU rules into Government Code sections 66310 through 66342 in 2024, and those rules were updated again on January 1, 2026. Square footage is now calculated as interior livable space only, and approval is ministerial, meaning no public hearing and no discretionary design review stands between your application and a decision.
Under the current law, the City of Hemet Building and Safety Department has 15 business days to determine whether your application is complete and 60 days to approve or deny it. That is the agency that handles permits for residential construction within city limits, so any ADU project on a standard single-family lot in Hemet goes through that office. Riverside County runs its own ADU ordinance, Ordinance 348, adopted in 2023, but the California Department of Housing and Community Development issued formal findings in May 2025 identifying eighteen provisions that do not comply with state law. Those provisions include a one-story or 16-foot height cap, a junior ADU limit set at 50 percent of the primary dwelling, and a parking requirement for interior ADUs. State law preempts all of them, so a homeowner reading the county handout alone may conclude they can build less than the law actually allows.
Riverside County also offers a Permit Ready ADU program with four free pre-approved plans ranging from a 499 square foot studio to a 909 square foot two-bedroom. Three of the four plans fall under 750 square feet, which keeps them below the state impact fee threshold. The program does exclude parcels in flood hazard or environmental constraint areas, so identifying which maps apply to your specific lot is an early and necessary step.
Hemet’s housing stock adds another layer of practical complexity. The city grew in distinct waves: a small older downtown core from its 1910 incorporation, large-scale mobile home park and retirement community development through the 1960s, single-family subdivisions in the 1980s, and a broader housing boom in the early 2000s. The most common home is a single-story three-bedroom ranch on a slab with a closed-off kitchen, and that layout affects where a detached ADU can be sited and how far new utility connections have to run.
One factor that separates Hemet from many other Southern California cities is the significant share of older housing located in age-restricted manufactured home communities. Work on a manufactured home does not follow the standard city building permit path. Instead, it falls under the jurisdiction of the California Department of Housing and Community Development, which operates a separate review and inspection process. Knowing whether your property is a standard site-built home or a manufactured home on a rental or ownership lot is one of the first questions we work through before any other planning begins.
Other Remodeling Services We Offer
A modern kitchen adds functionality, comfort, and lasting value to your home. At Horizon Construction & Remodeling, our kitchen remodeling experts bring fresh ideas and professional project management tailored to your unique needs. From layout design to material selection, we prioritize delivering a high-standard kitchen that’s both beautiful and energy-efficient — enhancing the way you cook, gather, and live every day.
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 As Your ADU Contractor in Hemet ?
Horizon Construction and Remodeling is a licensed Class B general building contractor, bonded, and in business since 2009. We handle ADU projects in Hemet from initial drawings through the City of Hemet Building and Safety Department permit process and on through final construction. One team manages the plan, the agency coordination, and the build, so nothing falls between the cracks.
Hemet’s housing stock shapes how we approach each project. Much of the city’s older residential base grew up in the 1960s as mobile home parks and retirement communities, and work on manufactured homes in those communities follows California Department of Housing and Community Development rules rather than the standard city building permit path. For the single-family ranch homes built during the 1980s subdivisions and the early 2000s housing boom, we plan around slab foundations, compact existing floor plans, summer heat loads, and any flood hazard or environmental constraints that affect which options are available on a given parcel.
A few protections California state law provides are worth knowing. There is no owner-occupancy requirement for an ADU, no sprinkler retrofit triggered on the main house, and no impact fees on a unit with 750 square feet or less of interior livable space. We work in and around Historic Downtown Hemet, the Harvard District, Seven Hills, and Sierra Dawn Estates. Contact us to request a free estimate for your ADU project.
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ADU Contractor Services in Hemet
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ADU Contractor in Hemet FAQ
What is an ADU and why should I build one?
An accessory dwelling unit is a self-contained secondary home built on your existing property, taking the form of a backyard cottage, a converted garage, or an attached in-law suite. In Hemet, where much of the housing stock consists of single-story ranch homes on slab foundations, that footprint often lends itself well to adding a detached ADU in the rear yard. Building one with us gives you rental income, room for family, or both.
How much does it cost to build an ADU in California?
What an ADU Actually Costs in Hemet
Pricing an ADU honestly means accounting for details no web page can settle on your behalf. The size of the unit, whether you are converting an existing attached garage or building a new detached structure, how much site work your lot demands, and the finish level you select all move the number in different directions. What state law does nail down is where your money is protected. An ADU of 750 square feet or less of livable space is exempt from impact fees, school fees apply only above 500 square feet, and connection fees for a conversion or junior ADU are limited because the state does not classify those as a new residential use. A new ADU also cannot trigger a fire sprinkler retrofit on your existing home.
Most of Hemet’s single-family housing stock sits on slab foundations, which affects utility routing and trenching costs in ways that vary lot by lot. Permits for standard ADU work go through the City of Hemet Building and Safety Department, though any work touching a manufactured home in one of the city’s older age-restricted communities follows a separate path under state Department of Housing and Community Development rules rather than the ordinary building permit process. We walk the property, confirm the setback and utility situation, and give you a fixed scope and price before any work begins. One point worth stating plainly: the CalHFA ADU grant program is closed, its funding fully allocated, and the agency itself warns that anyone offering to help you obtain an ADU grant is running a scam.
Do I need permits for an ADU in Hemet?
Yes, an ADU always requires a building permit, and in Hemet that application goes to the City of Hemet Building and Safety Department. Approval is ministerial rather than discretionary, meaning there is no public hearing and no design review board to satisfy. Under state law the department has 15 business days to confirm the application is complete and 60 days to approve or deny it, though a pre-approved plan can shorten that review window to 30 days. Horizon prepares and submits the full permit package and sees it through every inspection, so the process does not fall back on the homeowner to manage.
How long does ADU construction take with Horizon Remodeling?
Most ADU construction projects take between 4 to 8 months from design to completion, depending on scope and permit approvals. Horizon Remodeling prioritizes efficient timelines while maintaining quality workmanship.
What types of ADUs can Horizon Remodeling build?
We specialize in building detached ADUs, attached ADUs, garage conversions, backyard cottages, and junior ADUs (JADUs). Our team can help you choose the right ADU style for your property and goals.
Can I build a detached ADU on my property in Hemet?
Yes, if your property meets California zoning and space requirements. Horizon Remodeling will assess your site, secure the necessary permits, and build a fully detached ADU tailored to your preferences.
Is Horizon Remodeling licensed to build ADUs in my area?
Yes, Horizon Remodeling is fully licensed, bonded, and insured to build ADUs throughout Orange County and surrounding areas. We have over 18 years of experience delivering high-quality ADU projects.
What are the benefits of hiring Horizon Remodeling for my ADU project?
Horizon Construction & Remodeling Inc. handles ADU projects in Hemet from design through final inspection, coordinating permits with the City of Hemet Building and Safety Department and managing every trade so your build stays on budget and on schedule.
Does Horizon Remodeling handle ADU design and permitting?
Absolutely! Horizon Remodeling provides complete ADU design services, including architectural plans and 3D renderings. We also handle city permits and inspections, streamlining your project and reducing stress.
How do I get started on an ADU with Horizon Remodeling?
Ready to move forward? Contact Horizon Construction & Remodeling Inc. to schedule a free estimate. We review your Hemet property, talk through your goals, offer design recommendations, and walk you through every phase of your ADU project from start to finish.
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Horizon is a licensed Class B general building contractor serving Hemet and the surrounding Orange County communities.
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