#1 ADU Contractor in Cypress
Custom Builds by Horizon Remodeling
Horizon Construction & Remodeling Inc. builds accessory dwelling units and home additions in Cypress, managing design, permitting through the City of Cypress Building Division, budgeting, and material selection under one general contract. Most homes here are 1960s and 1970s slab-foundation tract houses, and that construction era shapes how we approach structural connections and utility routing on every project. Specialty trade work is handled by appropriately licensed subcontractors we coordinate directly. The result is a finished unit that meets current building code without putting that burden on you.
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 Cypress means working with someone who understands both state law and how that law lands on a specific parcel in this city. California ADU law, codified in Government Code sections 66310 through 66342, was updated on January 1, 2026. Square footage is now defined as interior livable space, and that same law sets firm limits that protect every property owner: no agency can cap an ADU below 850 square feet, or 1,000 square feet when the unit has more than one bedroom, side and rear setbacks cannot exceed four feet, and there are no impact fees on a unit of 750 square feet or less.
Applications in Cypress go to the City of Cypress Building Division. Under state law, the agency has 15 business days to determine whether a submission is complete and 60 days to approve or deny it. Approval is ministerial, meaning no hearing and no discretionary design review. No unusual local overlay applies here, so the building code and any applicable association rules are what actually govern the project.
Most of Cypress was developed in the 1960s and 1970s after the city incorporated in 1956 as Dairy City and the dairy farms gave way to tract housing. Those homes typically sit on slab foundations, one or two stories, with enclosed kitchens separated from living areas by a wall or pass-through. That layout directly affects where a detached unit can go and how far utilities need to run.
We walk every parcel before drawing anything, checking setbacks, grade, equipment access, and utility routes. Whether a garage conversion or a new detached build makes more sense depends on what the lot actually allows. State law also confirms that building an ADU cannot trigger a fire sprinkler retrofit of the main house, and owner-occupancy cannot be required as a condition of approval.
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 Cypress ?
Horizon Construction and Remodeling is a licensed Class B general building contractor, bonded, and in business since 2009. Cypress is a short drive from our Fullerton office, so this is local work for us, not a distant job site. The City of Cypress Building Division handles permits here, and because no unusual local overlay applies, the California building code and any applicable association rules are what shape the project from the start. We prepare HOA submittals alongside the building permit application rather than treating them as separate steps.
A detached ADU is essentially a small house added to a lot that already has one. It needs a foundation, framing, a roof, an exterior envelope, a kitchen, a bathroom, and separate utility connections. Most homes in Cypress were built in the 1960s and 1970s on slab foundations, and that existing site context directly affects how we approach placement, grading, and utility routing for the new structure.
Because the design decisions and the construction constraints are the same decisions on an ADU, having one company draw, permit, and build the unit matters. We also work in neighborhoods throughout Cypress, including Sorrento, Mackay Place, Tanglewood North, and the Lincoln Avenue corridor, as well as in nearby La Palma, Los Alamitos, and Stanton. Specialty trade portions of every ADU, such as electrical and plumbing, are performed by appropriately licensed subcontractors we coordinate directly.
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ADU Contractor Services in Cypress
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ADU Contractor in Cypress FAQ
What is an ADU and why should I build one?
An accessory dwelling unit is a self-contained secondary home on your property, built as a backyard cottage, a garage conversion, or an in-law suite. For homeowners in Cypress, where most lots date to the 1960s and 1970s tract-home era, adding an ADU can generate rental income, extend living space, or give family members a place of their own.
How much does it cost to build an ADU in California?
What an ADU costs in Cypress depends on factors we cannot assess from a web page alone. The size of the unit, whether you are converting existing space or building a new detached structure, the utility runs your lot requires, and the finish level you select all move the number in different directions. What state law does make predictable is where certain charges are capped or eliminated entirely. Any ADU at or under 750 square feet of interior livable space is exempt from impact fees. School fees apply only when the unit exceeds 500 square feet. Connection fees for a conversion or a junior ADU are limited because state law does not classify those as a new residential use, and adding an ADU cannot force a fire sprinkler retrofit on your existing home.
Most Cypress homes are 1960s and 1970s tract houses, and permits for any new construction or conversion run through the City of Cypress Building Division. Because no unusual local overlay applies here, the building code and any applicable association rules are what govern your project. We walk the property, verify the utility and setback conditions, and then give you a fixed scope and price. One point worth stating plainly: the CalHFA ADU grant program is closed, its funds fully allocated, and the agency itself warns that anyone offering to help secure an ADU grant is running a scam.
Do I need permits for an ADU in Cypress?
Yes, an ADU in Cypress requires a building permit, and the City of Cypress Building Division handles those applications. State law makes ADU approval ministerial rather than discretionary, meaning no public hearing or design review is involved. The agency has 15 business days to confirm a complete application and 60 days to approve or deny it, though a pre-approved plan shortens that review to 30 days. We prepare and submit the permit package and see it through every inspection, so the process does not land 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 Cypress?
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 work in Cypress from initial design through final inspection, coordinating permitting with the City of Cypress Building Division and keeping the project on budget. For the tract homes built across neighborhoods like Sorrento and Tanglewood North in the 1960s and 1970s, that full-process management matters.
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 & Remodeling Inc. to schedule a free estimate, and we will assess your Cypress property, talk through your goals, offer design recommendations, and walk you through every phase of your ADU project from start to finish.
Recent ADU and Garage Conversions
Three completed ADU and garage conversion projects from our Orange County portfolio. Every project below was built in San Clemente. Nothing loads from YouTube until you press play.
ADU project in San Clemente
ADU project in San Clemente
ADU project in San Clemente
Built by Horizon Construction & Remodeling, Inc. Licensed Class B general building contractor.
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Horizon is a licensed Class B general building contractor serving Cypress and the surrounding Orange County communities.
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