#1 ADU Contractor in Palmdale
Custom Builds by Horizon Remodeling
Horizon Construction & Remodeling Inc. builds accessory dwelling units and home additions for Palmdale homeowners who need more living space on their property. Most homes here went up during the 1980s and 1990s growth surge, and the typical flat lot with an attached garage is well suited to a detached backyard unit or a garage conversion. We coordinate design, budgeting, permit submissions to the City of Palmdale, material selection, and construction across every trade involved, with specialty work handled by appropriately licensed subcontractors we manage directly.
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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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Finding the right adu contractor in Palmdale means understanding both California’s evolving ADU statutes and the specific permit process that applies to your parcel. State law governing ADUs now sits in Government Code sections 66310 through 66342, and changes that took effect January 1, 2026 are worth knowing before you draw anything. Square footage is now measured as interior livable space, the City of Palmdale has 15 business days to determine whether your application is complete, and 60 days to approve or deny it. Approval is ministerial, meaning no public hearing and no discretionary design review stands between a complete application and a decision.
Because Palmdale is an incorporated city, your permit goes to the City of Palmdale rather than to any county counter. That distinction matters in Los Angeles County, which contains 88 incorporated cities, and where the responsible agency changes from one municipality to the next even when the underlying state rules do not. The county’s own ADU ordinance, amended in July 2025, was found non-compliant with state law by the California Department of Housing and Community Development in December 2025. Among other findings, it caps detached ADUs on multifamily lots at two where state law allows up to eight. That ordinance governs unincorporated territory only, but it is a useful reminder that a local handout pulled from a county website is not always current with the statute.
Palmdale incorporated in 1962 as the first city in the Antelope Valley, and its population grew from roughly 12,000 in 1980 to more than 150,000 by 2010. Most of that growth produced the tract housing that defines the city today: one and two story homes on flat lots with attached garages, built during the 1980s and 1990s. That housing stock shapes ADU work in a practical way. Because these are not prewar floor plans with load-bearing walls running in every direction, the work is usually finishes, cabinets, and mechanical systems rather than structural rearrangement, which keeps the scope more predictable.
The high desert climate adds its own layer of detailing. Palmdale summers run hot and nearly dry, winters bring freezing nights, and annual rainfall averages around six inches. That combination puts real pressure on insulation choices, glazing performance, and HVAC sizing in any new unit. We factor those conditions into the plans from the start, because undersizing a system in this climate creates comfort and energy problems that are expensive to fix after the drywall goes up. California’s Title 24 energy efficiency requirements apply, and a unit built here needs to meet them for both the permit and the long-term livability of the space.
State law sets a floor of protections that applies wherever the parcel sits. A local agency cannot cap an ADU below 850 square feet of interior livable space, or below 1,000 square feet for a unit with more than one bedroom. Side and rear setbacks cannot exceed four feet. Owner-occupancy cannot be required as a condition of building an ADU. Construction of a unit cannot trigger a fire sprinkler retrofit of the main house. And there are no impact fees on a unit of 750 square feet or less. We walk every parcel before drawing anything, checking setbacks, utility routes, equipment access, and grade so the design reflects what the lot will actually support.
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 Palmdale ?
Horizon Construction and Remodeling builds ADUs in Palmdale as a licensed Class B general building contractor, bonded, and in business since 2009. We handle the plan, the permit submittal to the City of Palmdale, and the build itself, so nothing falls between separate contracts.
Most Palmdale properties are flat-lot tract homes from the 1980s and 1990s, which generally means the ADU work centers on finishes, cabinets, and mechanical systems rather than restructuring an older floor plan. The high desert climate shapes a lot of those decisions. With summers that run extremely hot, winter nights that drop below freezing, and roughly six inches of rain per year, insulation, glazing, and HVAC sizing matter from the first drawing.
We work through those details before permit drawings are finalized, because a plan that skips them tends to come back as a redesign. Areas we regularly work in include Anaverde, Rancho Vista, Portal Ridge, and Pearland.
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ADU Contractor Services in Palmdale
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ADU Contractor in Palmdale FAQ
What is an ADU and why should I build one?
An ADU is a secondary housing unit on your property, such as a backyard cottage, garage conversion, or in-law suite, and building one with Horizon Construction and Remodeling can add rental income, expand your living space, or give a family member a place of their own. In Palmdale, where most homes are tract-built properties from the 1980s and 1990s sitting on flat lots, a garage conversion is often a practical starting point, though any ADU here has to account for the high desert’s extreme heat, freezing winter nights, and minimal rainfall through careful insulation, glazing, and HVAC decisions. The City of Palmdale issues the required building permits for this work.
How much does it cost to build an ADU in California?
Pricing an ADU in Palmdale depends on details no contractor can know without visiting the property: the unit size, whether the plan calls for a garage conversion or new detached construction, what utility runs your lot requires, and the finish level you choose. Palmdale’s typical 1980s and 1990s tract homes on flat lots often make garage conversions straightforward from a structural standpoint, but the high desert climate adds real weight to insulation, glazing, and mechanical choices that affect the final number. What the law does protect you from is worth understanding. A unit of 750 square feet or less of interior livable space is exempt from impact fees. School fees apply only above 500 square feet. Connection fees for a conversion or junior ADU are limited because state law does not treat those as a new residential use. An ADU also cannot trigger a fire sprinkler retrofit of your existing home.
Anyone quoting a firm price before walking your parcel is guessing. We visit the site, confirm setbacks, utility locations, and any conditions the City of Palmdale may flag during permitting, and then give you a fixed scope and price you can hold us to. One warning worth repeating: the CalHFA ADU grant program is closed, its funding fully allocated, and the agency itself states that anyone offering to help you obtain an ADU grant is running a scam.
Do I need permits for an ADU in Palmdale?
Yes, an ADU always requires a building permit, but approval is ministerial rather than discretionary, meaning there is no hearing and no design review board to satisfy. Applications for properties inside city limits go to the City of Palmdale. Under state law the agency has 15 business days to determine completeness and 60 days to approve or deny, and any denial must identify the specific deficiencies and how to correct them; submitting a pre-approved plan shortens that review window to 30 days. Palmdale’s flat-lot tract homes, most built during the 1980s and 1990s boom, tend to make the permit package straightforward since the work centers on finishes, cabinets and mechanical systems rather than structural changes to an older floor plan. Horizon prepares and submits the full application and carries the project through every inspection, so the process never lands back in the homeowner’s lap.
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 Palmdale?
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. manages the full ADU process, from design and City of Palmdale permitting through construction and final inspection, so your project meets building codes and stays within budget. Palmdale’s high desert climate means insulation and glazing choices carry real weight in every build.
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?
Call us to schedule a free consultation, where we assess your property, discuss your goals, offer design recommendations, and deliver a detailed estimate, then guide you through every phase of your ADU project in Palmdale.
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Horizon is a licensed Class B general building contractor serving Palmdale and the surrounding Orange County communities.
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