3 Best ADU Builders in Charleston, South Carolina
Verified ADU contractors and builders in Charleston, SC
Showing 1–3 of 3 listings
Canter Construction
Transform your Charleston garage into a functional living space with expert conversion services tailored to your home's unique layout and needs. From design through completion, we handle every detail of converting your garage into a bedroom, office, or recreation area that adds value and comfort to your South Carolina home.
Oak Angel Builders
Oak Angel Builders became popular because of the design flexibility and uncompromising craftsmanship we bring to every job. Our passion is delivering beautiful homes that our customers love.
Oceanside Construction & Design
Transform your underutilized garage into a functional living space with expert conversion services in Charleston, SC. From design concept through completion, our team specializes in garage-to-living-space renovations that maximize your home's potential and value.
Frequently Asked Questions — ADU Builders in Charleston
How much does it cost to hire an ADU builder in Charleston?
ADU construction costs in Charleston, South Carolina 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 Charleston to get accurate quotes for your specific project.
How long does it take to build an ADU in Charleston?
In Charleston, 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 South Carolina local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Charleston?
Yes, a building permit is required for ADU construction in Charleston, South Carolina. Your ADU builder will typically handle the permit application as part of their service. South Carolina has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Charleston?
Common ADU types in Charleston 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 Charleston ADU builder can advise on what's allowed on your specific parcel.