Simpsonville, SC Accessory Structures: Garage Conversions (2026)
Garage conversion rules in Simpsonville, SC, sometimes called garage-to-ADU or accessory living unit conversions, govern permits, ceiling height, egress, and parking replacement.
Key Facts
- Special conversion rule
- None; general permit rules apply
- Building permit
- Required (change of occupancy)
- Second dwelling unit
- Not allowed via garage (Sec. 3.3.4)
- Governing chapter
- Ch. 8 Buildings; Zoning Sec. 7.7
- Parking
- Must still meet off-street standards
Summary
Simpsonville's Zoning Ordinance has no special garage-conversion allowance. Converting a garage into living space is a change of use of a structure that triggers a building permit under Chapter 8; it may not create a second dwelling unit, since accessory dwelling units are limited to upper floors of nonresidential buildings
This Section is intended to ensure that no construction, reconstruction, alteration, demolition, change in the use or occupancy of any land, building, or other structure occurs without first obtaining the appropriate permit approval...
Full Breakdown
The Zoning Ordinance treats any change in the use or occupancy of a building as regulated activity requiring compliance and permits (Sec. 7.7.1). A garage-to-habitable-room conversion within a single-family home is generally allowed as long as it meets building-code and off-street-parking requirements, but it cannot be used to create a separate rentable dwelling because Section 3.3.4 restricts accessory dwelling units to stories above the ground floor of nonresidential buildings. Building-permit and inspection requirements are administered through the Building/Codes division under Chapter 8 (Buildings and Building Regulations) and the South Carolina building codes. Homeowners should verify parking and setback compliance before converting.
Violations & Fines
An unpermitted conversion or an illegal second unit is a code violation; the City may issue stop-work orders, withhold certificates of occupancy, and require reversal. Penalties follow Code section 1-9.
Frequently Asked Questions
Do I need a permit to convert my garage into a room?
Can I turn my garage into a rental apartment?
Sources & Official References
Other rules in Simpsonville
Compare Simpsonville to another location·View the South Carolina accessory structures overview
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