Baywater Custom Builders is a premier ADU contractor in South Carolina & Georgia's Lowcountry. With 75+ years of experience, they specialize in detached ADUs, garage conversions, in-law suites & granny flats, boosting property value and rental income.
read more
JOST is a family-owned custom home builder in Columbia, SC, founded by John Strevens in 2020. Rooted in generations of Irish craftsmanship, JOST follows a Design, Plan, Build process, delivering quality, transparent, client-focused custom home construction.
read more
Charleston ADU Co. builds accessory dwelling units in Charleston, SC. Services include detached ADUs, garage conversions, and basement conversions. Free site evaluation, 3D design, 6-month delivery guarantee, and flexible financing available.
read more
Bradley Knapp Homes is a leading ADU builder in South Carolina with 26+ years of experience. They offer custom homes, detached ADUs, pool houses, and home offices with full permitting support, financing options, and a 10-year workmanship warranty.
read more
D.A.R.T Construction builds ADUs across South Carolina, including detached backyard cottages, garage apartments, in-law suites & granny flats. They manage permits, inspections & utility coordination with a structured, phased build process.
read more
Concrete foundations for ADUs in Greenville County, SC offer durability, moisture resistance, and low maintenance. Virtue Concrete provides expert residential and commercial concrete services across Upstate South Carolina, including Anderson, Spartanburg, and Pickens counties.
read more
Daniel Builders, a licensed South Carolina builder, specializes in ADUs, tiny homes, and guest houses in Greenville and Anderson. These structures range from 500–1,200 sq ft, with costs varying from $100/sq ft to $700,000+.
read more
Bald Cypress Builders LLC follows a 3-phase remodeling process: Explore & Understand, Design & Plan, and Build & Bring to Life. Clients complete a questionnaire, collaborate on designs, and receive regular updates through to a final walkthrough.
read more
Charleston ADU Co builds custom ADUs in Charleston, SC, offering detached units, garage conversions & basement conversions. Enjoy free 3D design, 6-month delivery, 12-month warranty & no payments for 18 months.
read more
Nunley Custom Homes builds ADUs in Greenville, SC—detached units, garage conversions, basement & attic ADUs. Costs range $150–$400/sq ft. Full permitting, zoning, and construction management included. 34+ years experience.
read more
An Accessory Dwelling Unit (ADU) is a self-contained secondary unit on your property. Benefits include rental income, family housing, and increased property value. Options range from garage conversions to detached backyard cottages.
read more
HHI Builders is Hilton Head & Bluffton SC's preferred luxury design-build remodeler, specializing in ADU construction, kitchen & bathroom renovations, home additions & whole home remodels with transparent pricing & a satisfaction guarantee.
read moreSouth Carolina's warm climate, growing population, and booming real estate market have made Accessory Dwelling Units (ADUs) increasingly popular across the state. Cities like Charleston, Columbia, and Greenville have seen a surge in demand for ADUs as homeowners look to add rental income, house family members, or increase property value. South Carolina's strong tourism industry also makes ADUs an attractive option for short-term rental opportunities, particularly in coastal areas like Myrtle Beach and Hilton Head Island.
One of the most important aspects of working with ADU contractors in South Carolina is understanding the state's local zoning regulations. Unlike some states that have passed statewide ADU legislation, South Carolina leaves most zoning decisions to individual municipalities and counties. This means regulations can vary significantly depending on your location. Key regulatory considerations include:
Hiring the right ADU contractor in South Carolina is critical to ensuring your project is completed legally, safely, and on budget. A qualified contractor should be licensed through the South Carolina Contractor's Licensing Board (SCCLB), which requires contractors to pass examinations and meet financial and experience requirements. When evaluating potential contractors, consider the following:
The cost of building an ADU in South Carolina typically ranges from $80,000 to $250,000, depending on the type of unit, size, location, and materials used. Detached ADUs generally cost more than garage conversions or basement units. Construction timelines can range from a few months for simple conversions to over a year for custom-built detached structures. Working with an experienced South Carolina ADU contractor who understands local permitting timelines can help keep your project on schedule and within budget.