#1 ADU Contractor in Glendale
Custom Builds by Horizon Remodeling
Horizon Construction & Remodeling Inc. builds accessory dwelling units and home additions throughout Glendale, managing design coordination, budgeting, permitting through the City of Glendale Building and Safety Division, and material selection so every phase stays on track. Because Glendale’s housing ranges from 1920s period revival houses in neighborhoods like Rossmoyne and Verdugo Woodlands to postwar homes and 1980s condominiums, each ADU project starts with a close look at what the existing structure can support and what the site allows.
Services We Offer
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 Glendale means understanding both California’s updated state law and the specific permit pathway your property sits inside. California consolidated its ADU statutes into Government Code sections 66310 through 66342 in 2024, and amendments effective January 1, 2026 changed how square footage is counted, measuring interior livable space only, and set firm agency timelines: 15 business days to determine whether an application is complete and 60 days to approve or deny it. Approval is ministerial, meaning no public hearing and no discretionary design review.
In Glendale, that application goes to the City of Glendale Building and Safety Division. One detail that catches some property owners off guard is the Historic District Overlay Zone ordinance at Municipal Code section 30.25. If your parcel sits within a designated historic district, alterations and demolitions require approval from the Community Development Department or the Historic Preservation Commission before standard building permits can move forward. We verify this at the start, not after plans are drawn.
Glendale developed in distinct waves. A 1920s and 1930s construction boom followed the city’s 1906 incorporation, a postwar surge added another generation of homes, and a 1980s round of apartment and condominium development replaced many single-family lots. What that means practically is that the structure, the lot dimensions, and the utility layout you are working with depend entirely on the block you are on. A period revival house on a hillside street in Rossmoyne or Verdugo Woodlands presents a very different set of constraints than a postwar ranch or a 1980s condominium in another part of the city.
We walk every parcel before drawing anything, checking setbacks, grade, equipment access, and how far utilities need to run. That site read is what tells us whether a garage conversion or a new detached build makes more sense for your property and your goals.
State law sets a floor of protections regardless of where the parcel sits. A local agency cannot cap an ADU below 850 square feet of interior livable space, or 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, adding an ADU cannot trigger a fire sprinkler retrofit of the main house, and there are no impact fees on units of 750 square feet or less. Contact us to request a free estimate and talk through what your specific lot allows.
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 Glendale ?
ADU Contractor in Glendale
Horizon Construction & Remodeling Inc. is a licensed and bonded Class B general building contractor that has been building accessory dwelling units in Glendale since 2009. We handle the full scope under one contract: design, permit submittal to the City of Glendale Building and Safety Division, and construction. Keeping everything in-house means nothing falls through the gap between the person who drew the plan and the person who built it.
Glendale’s housing stock runs from 1920s period revival homes on hillside streets in Rossmoyne and Verdugo Woodlands to postwar houses in Adams Hill and Montrose to 1980s condominiums, and each era presents its own site conditions. We sort out grade, utility routing, and equipment access before drawings start, because a plan that ignores those realities costs time in redesign. If a property falls within Glendale’s Historic District Overlay Zone, alterations require review by the Community Development Department or the Historic Preservation Commission, and we account for that in the submittal.
Where state ADU law and a local ordinance point in different directions, we identify which governs and document it clearly for the reviewer. Specialty trade portions, including electrical and plumbing rough-in, are performed by appropriately licensed subcontractors we coordinate directly. Contact us to request a free estimate for your Glendale ADU project.
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ADU Contractor Services in Glendale
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ADU Contractor in Glendale FAQ
What is an ADU and why should I build one?
An accessory dwelling unit is a secondary home on your own lot, taking the form of a converted garage, a backyard cottage, or an attached in-law suite. Building one with Horizon Construction & Remodeling can add rental income, create independent space for family, or simply expand how you use your Glendale property.
How much does it cost to build an ADU in California?
Pricing an ADU in Glendale depends on variables that no contractor can resolve from a website alone. The unit type matters, whether you are converting an existing structure on a 1920s Rossmoyne bungalow or building a new detached unit behind a postwar house in Verdugo Woodlands. Site conditions, utility runs, setbacks, and finish level all move the number. What we can tell you is where the budget actually goes. A unit at or under 750 square feet of livable space is exempt from impact fees under state law. School fees apply only above 500 square feet. Connection fees for a conversion or junior ADU are capped because the state does not classify those as a new residential use. Building an ADU also cannot force a fire sprinkler retrofit on your existing home.
Anyone quoting a firm price before walking your lot is working from assumptions, not facts. We inspect the parcel, confirm utility locations, setback conditions, and any constraints tied to Glendale’s permitting process through the Building and Safety Division before we give you a fixed scope and a price you can hold us to. If your property falls within a Historic District Overlay Zone, approvals may also involve the Community Development Department or the Historic Preservation Commission, and we account for that in the schedule. One thing worth stating plainly: the CalHFA ADU grant program is closed and fully allocated. Anyone offering to help you obtain an ADU grant is running a scam, and the agency itself says so.
Do I need permits for an ADU in Glendale?
Every ADU in Glendale requires a building permit, but state law makes that approval ministerial rather than discretionary, meaning no hearing and no design review board. Applications go to the City of Glendale Building and Safety Division, which has 15 business days to determine whether your submittal is complete and 60 days after that to approve or deny it; any denial must identify the specific deficiencies and explain how to correct them. Submitting a pre-approved plan shortens that review window to 30 days. We prepare and submit the full permit package and carry it through every required inspection, so the process does not fall back on you.
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 Glendale?
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 ADU projects in Glendale from design through final inspection, coordinating permitting with the City of Glendale Building and Safety Division and keeping the work aligned with building codes and your budget throughout.
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?
Reach out to Horizon Construction and Remodeling 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.
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Horizon is a licensed Class B general building contractor serving Glendale and the surrounding Orange County communities.
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