Build Smart. Build Beautiful. Build Your ADU.
Are you looking to add a high‑quality, beautifully designed detached ADU in Orange County that maximizes your property value and fits seamlessly into your home and lifestyle?
At Kol & Co., with more than 15 years of hands-on construction experience, we don’t just build Accessory Dwelling Units — we craft spaces that feel like part of your home from day one. Whether you want a modern ADU for rental income, a guest suite, or a custom suite for family, we’re the trusted choice for Orange County homeowners.
We are licensed, fully insured, and bonded, and we specialize in designing and building detached ADUs, backyard cottages, and secondary dwelling units that are as beautiful as they are functional. Our work speaks for itself — and our clients tell the story best.
Contact us today for a consultation and let’s build the detached ADU you’ve been dreaming of!
What makes us different?
Turn your backyard vision into a fully realized, code-compliant ADU.
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Perfect for homeowners who want: a hassle-free, turnkey ADU built with precision, quality, and care.
Design the ADU that perfectly complements your home and your goals.
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Navigate Orange County codes and approvals with confidence.
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Building a Detached ADU in Orange County is an exciting way to add value, functionality, and modern living space to your property — but costs and timelines can vary depending on your ADU’s size, design complexity, finishes, and level of customization.
At Kol & Co., we provide transparent pricing, realistic timelines, and personalized guidance, so your ADU project fits your budget and lifestyle perfectly — without surprises along the way.
Proudly helping homeowners throughout Orange County, including neighborhoods near Irvine, Newport Beach, Costa Mesa, Tustin, Mission Viejo, Laguna Beach, and Anaheim Hills. We understand local zoning, city codes, and permit requirements — making your ADU build smooth, compliant, and stress-free.
Building a Detached ADU is a big decision, but with Kol & Co., it’s simple, transparent, and personalized. Call us at (949) 799-3668 or contact us now for a free estimate, and let’s start turning your backyard vision into reality.
A detached ADU (Accessory Dwelling Unit) is a standalone living space built in your backyard separate from your main home. Unlike attached ADUs or garage conversions, detached units offer privacy, rental income potential, and design freedom — all while complying with local setback and zoning rules.
Major cost factors include:
Cities closer to the coast or with stricter building codes can also add 10–20% to total costs.
Yes — every detached ADU in Orange County requires the proper city and county permits before construction can begin. The permitting process can be complex, involving zoning approvals, plan checks, and inspections.
That’s where Kol & Co. comes in. We handle the entire permitting process for you: from preparing your plans to submitting applications, coordinating with city officials, and ensuring all approvals are in place. Our goal is to make the process smooth, stress-free, and fully compliant, so you can focus on your dream ADU while we take care of the paperwork.
