ADU Rules in Greenville, SC (2026)
ADU rules, permit requirements, size limits, and fees for Greenville, SC. Source-cited from official municipal code.
Whether ADUs are allowed in Greenville, SC has not been confirmed — see the official source before proceeding.
Whether Greenville, SC permits accessory dwelling units (ADUs) has not been confirmed from an official source. ADUs — also called granny flats, in-law units, or secondary suites — are secondary housing units on a single-family or multifamily lot. Contact the local building department through their official website to verify current ADU rules before proceeding, as regulations may have changed since this data was last reviewed.
ADU Size Limits
ADU Size Limits in Greenville: Detached ADU: size varies by zoning — see official source (max height: varies — see official source). Attached ADU: size varies by zoning — see official source.
| Type | Max Size | Max Height |
|---|---|---|
| Detached ADU | See official source | See official source |
| Attached ADU | See official source | See official source |
Permit Fees
ADU Permit Fees in Greenville: Plan check fee: Varies. Building permit fee: Varies. Impact fees: None. School fees: None or N/A. Total estimated permit cost: Varies.
| Fee Type | Amount |
|---|---|
| Plan Check | $200–$700 |
| Building Permit | $400–$2,000 based on construction value |
| Impact Fees | None |
| School Fees | None |
| Total Estimate | See official source |
Permit Timeline
Greenville ADU Permit Timeline: Permit timeline has not been confirmed — contact the department for current processing times. Apply through the local building department online permit portal. Contact them through their official website for current contact information.
Setback Requirements
ADU Setback Requirements in Greenville: Front setback: follows zone standard. Side setback: no minimum. Rear setback: no minimum.
Parking Requirements
Parking Requirements: Parking requirements have not been confirmed — see official source.
Restrictions & Requirements
- Maximum one ADU per single-family residential lot
- ADU must be on same lot as primary dwelling
- Historic Hampton-Pinckney neighborhood properties may require additional design review
- ADU must have independent entrance from primary dwelling
- Lot coverage limits by zone apply — ADU footprint counts toward coverage
How Many ADUs Are Allowed?
Number of ADUs Allowed in Greenville: Single-family lots: not confirmed — see official source. Multifamily properties: not confirmed — see official source.
- Single-Family Lots
- 1
- Multifamily Properties
- Additional units within base zone density limits
Statewide Preemption
ADU Preemption
We could not confirm a statewide ADU preemption statute for South Carolina.
View South Carolina preemption detailsFrequently Asked Questions
Can I build an ADU in Greenville?
Yes. Greenville, SC allows accessory dwelling units. On a single-family lot you can build 1.
How big can an ADU be in Greenville?
The maximum size for a detached ADU in Greenville is 900 square feet.
How long does it take to get an ADU permit in Greenville?
The typical ADU permit timeline in Greenville is Greenville Planning and Development processes permits. Standard ADU: 4-6 weeks. Greenville's online permit portal: https://aca.greenvillesc.gov/. Greenville's growth pace means permit backlogs can occur — early application submission recommended.. Total estimated permit fees are $800–$4,000 total fees.
Do I need extra parking for an ADU in Greenville?
Greenville parking rules for ADUs: 1 parking space per ADU. Greenville's downtown core and walkable neighborhoods near Main Street may qualify for reduced parking requirements. Greenville Transit Authority (GTA) bus service extends to many residential areas. Properties within 1/4 mile of GTA routes may qualify for parking reduction under Greenville LMO.
Do I have to live on-site to have an ADU in Greenville?
Owner-occupancy requirement in Greenville: No owner-occupancy requirement for ADUs in Greenville. Both primary dwelling and ADU may be rented simultaneously. Greenville's rapid growth and housing demand support ADU investment property development.
Source: City of Greenville Land Management Ordinance (LMO); Building Code. Last verified April 6, 2026. View source