Accessory Dwelling Unit (ADU) Building in Orange County, CA
Colin Brothers Construction builds accessory dwelling units across Orange County, CA for homeowners ready to add real living space to their property.
Expert Accessory Dwelling Unit (ADU) Building in Orange County, CA
Adding an ADU to your Orange County property is one of the most practical ways to put your lot to work. Colin Brothers Construction handles the full build process, from planning your layout to completing the finished unit. We build detached ADUs, attached ADUs, garage conversions, and Junior ADUs, so the right fit depends on your lot, your goals, and how you plan to use the space. Orange County cities each carry their own development standards layered on top of California state law, and getting those details right from the start keeps your project on track. Whether you want a private space for a family member, a rental unit to offset your mortgage, or a flexible guest suite, we work through the specifics with you before a single board goes up. Adrian Colin built this company by learning every step of the process hands-on, and that ground-level knowledge shows in how we approach each build. We serve homeowners across Orange County and the surrounding Southern California region.
What's included
- Adds a fully self-contained living unit to your existing lot without purchasing new land
- Creates a legal rental unit that can generate income in Orange County's tight housing market
- Provides private, on-site housing for aging parents or adult children without sharing your main home
- Increases your property's appraised value and broadens buyer appeal when you sell
- Covers all ADU types, including detached builds, attached additions, and garage conversions
- Builds to California state ADU standards, including the 4-foot rear and side setback requirements now required across OC cities
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Accessory Dwelling Unit (ADU) Building FAQ
Common questions about accessory dwelling unit (adu) building in Orange County, CA.
Yes, California state law allows homeowners to build at least an 800-square-foot ADU with no minimum lot size requirement. Most residential lots across Orange County qualify as long as the unit fits within the required setbacks.
We build detached ADUs, attached ADUs, garage conversions, and Junior ADUs across Orange County. The right type depends on your lot layout, your goals, and the rules specific to your city.
A detached ADU gives tenants the most privacy and typically attracts stronger rental interest in Orange County's competitive market. A garage conversion costs less upfront and works well when your existing structure is in good condition.
Yes, cities across Orange County add their own development standards on top of state law, covering things like maximum size, height, and parking. We work through your city's specific requirements before your build begins.
Yes, a permitted ADU in Orange County can serve as family housing now and a rental unit later. California law removed owner-occupancy restrictions, so you have flexibility in how you use the space over time.
Yes, we serve homeowners in Los Angeles County, Riverside County, San Bernardino County, and San Diego County in addition to Orange County. Contact us to talk through your project location and lot details.
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Phone
(949) 613-1602Hours
- Monday 8:00 AM - 5:00 PM
- Tuesday 8:00 AM - 5:00 PM
- Wednesday 8:00 AM - 5:00 PM
- Thursday 8:00 AM - 5:00 PM
- Friday 8:00 AM - 5:00 PM
- Saturday 8:00 AM - 5:00 PM
- Sunday Closed