6 Best ADU Builders in Columbia, Missouri
Verified ADU contractors and builders in Columbia, MO
Showing 1–6 of 6 listings
CSG Restoration, LLC
Transform your unused garage into valuable living space with expert garage-to-living-space conversions in Columbia, MO. Our specialized restoration team handles everything from structural modifications to finishing touches, creating functional rooms that seamlessly integrate with your home.
G.P. Construction Services | The Garage Door Store
Transform your garage into functional living space with expert garage-to-living-space conversion services in Columbia, MO, where experienced builders handle everything from structural modifications to finishing touches. Whether you're adding a bedroom, home office, or recreation room, we'll bring your vision to life with quality craftsmanship and attention to detail.
Heartland Homes Remodeling & Roofing
Transform your unused garage into valuable living space with expert garage-to-living-space conversions in Columbia, Missouri. From structural modifications to full interior finishing, we specialize in creating functional rooms that seamlessly integrate with your home's existing layout and style.
Missouri Restoration & Construction LLC
We specialize in transforming underutilized garage spaces into functional living areas for Columbia homeowners, handling everything from structural modifications to finishing touches. Our expert team manages the complete garage conversion process, ensuring your new space seamlessly integrates with your home's existing design and meets all local building codes.
Monarch Architecture
Adrienne Stolwyk is a licensed architect in Columbia, Missouri, who is at the forefront of natural building compliant with city code. She is especially interested in net zero buildings—that is, those built with carbon-sequestering materials and designed to consume minimal energy throughout their lifespans.
New Beginnings Construction & Remodeling
We specialize in transforming underutilized garage spaces into beautiful, functional living areas for Columbia-area homeowners seeking to maximize their property's potential. From design consultation through completion, our experienced team handles every aspect of garage-to-living-space conversions with quality craftsmanship and attention to detail.
Frequently Asked Questions — ADU Builders in Columbia
How much does it cost to hire an ADU builder in Columbia?
ADU construction costs in Columbia, Missouri vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Columbia to get accurate quotes for your specific project.
How long does it take to build an ADU in Columbia?
In Columbia, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Missouri local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Columbia?
Yes, a building permit is required for ADU construction in Columbia, Missouri. Your ADU builder will typically handle the permit application as part of their service. Missouri has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Columbia?
Common ADU types in Columbia include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Columbia ADU builder can advise on what's allowed on your specific parcel.