Building permits in Greenville County, South Carolina
Find the right authority before you build. Greenville County permitting follows South Carolina law — here is exactly who issues the permit and where to start.
County + cities (mixed)
Greenville County — Building Safety & Code Enforcement
In South Carolina, building permits are issued locally. Greenville County Building Safety issues permits for unincorporated Greenville County; the cities of Greenville and Spartanburg run their own building departments inside city limits.
Open the official permit portal →
South Carolina’s building codes are adopted by the SC Building Codes Council (under LLR); local jurisdictions enforce them and may add ordinances. Greenville County submits permits through its eTRAKiT portal.
Permit cheat-sheet (South Carolina rules)
| Project | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | Permit required | city | Valuation-based building + trade permits per the local fee schedule. | Plan review; Charleston requires a full permit package (site plan, floor plans, often a floodplain elevation certificate). | Generally allowed | South Carolina has no statewide ADU law, but many cities (e.g., Charleston) allow accessory dwelling units in residential zones by local ordinance. Verify the specific district allowances (setbacks, parking, flood/storm requirements) with your city. Exempt: South Carolina has no single statewide ADU mandate; local zoning controls size/number of ADUs. |
| 🪵 Deck / Porch | Conditional | city | Valuation-based; Charleston adds an application + zoning-review fee on top of the permit fee. | Plan review ~2–3 weeks (Charleston); footing inspection before concrete. | Generally allowed | Coastal South Carolina design wind speeds reach 130–160 mph (Wind-Borne Debris Regions); hurricane-rated hardware and flood-zone elevation rules often apply. Exempt: S.C. Code § 40-59-265 exempts decks NOT exceeding 200 sq ft AND not more than 30 in above grade at any point. |
| 🧱 Fence / Wall | Conditional | city | Often no building permit under the height threshold; permit fee only if over threshold. | Over-the-counter / zoning review for tall fences. | Generally allowed | Pool-barrier fences must meet barrier requirements. Coastal wind loads and HOA rules may be stricter. Exempt: S.C. Code § 40-59-265 exempts fences not over 7 ft high. |
| 🛖 Shed / Outbuilding | Conditional | city | Valuation-based when over the exemption size; small sheds may only need zoning/site-plan review. | Small exempt sheds need no building permit; permitted sheds go through plan review. | Generally allowed | Even exempt sheds need site-plan/zoning approval for setbacks and lot coverage; coastal wind/flood rules can apply to all sizes. Exempt: S.C. Code § 40-59-265 exempts one-story detached accessory structures ≤200 sq ft without utilities. |
| 🪜 Basement Finish | Permit required | city | Valuation-based; includes trade permits. | Standard plan review 2–4 weeks. | Generally allowed | Basements are uncommon in much of South Carolina; coastal/floodplain grades affect foundation work. Exempt: Cosmetic finishing (paint, flooring) is exempt. |
| 🚗 Garage / Carport | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review; coastal wind-load connections reviewed. Exempt: All garages over the 200 sq ft exemption require a permit. |
| ☀️ Rooftop Solar PV | Permit required | city | Building + electrical permits (South Carolina follows the 2020 NEC with SC modifications). | Rooftop PV review typically 2–3 weeks (longer in historic districts needing BAR approval). | Generally allowed | South Carolina is solar-friendly, but Charleston’s wind zones and historic-district BAR rules can add review steps. Exempt: No size exemption; rooftop PV requires building and electrical permits. |
| 🌡️ HVAC Replacement | Conditional | city | Mechanical permit; fee set by the city. | In-kind replacement is often exempt/over-the-counter; full review 1–2 weeks for new systems. | Generally allowed | South Carolina requires a licensed mechanical contractor and licensed electrician for HVAC/electrical work (DIY electrical is not allowed). Exempt: Portable heating/cooling units are exempt; installed HVAC needs a mechanical permit. In-kind same-location swaps are often exempt in Charleston. |
| 🍳 Kitchen Remodel | Conditional | city | Valuation-based when structural/plumbing/electrical work is included. | Standard review for permitted scopes. | Generally allowed | Renovations that change layout or systems require permits; plumbing under the 2021 IPC with SC modifications. Exempt: Cabinet/countertop swap in the same layout is exempt (finish work). |
| 🛁 Bathroom Remodel | Conditional | city | Valuation-based when plumbing is relocated. | Standard review for permitted scopes. | Generally allowed | Ventilation to the exterior required; plumbing under the 2021 IPC with SC modifications. Exempt: Fixture-for-fixture swap in place is often exempt. |
| 🏗️ Room Addition | Permit required | city | Valuation-based; includes trade permits and impact fees. | Plan review several weeks (historic-district BAR review can add 4–6 weeks in Charleston). | Generally allowed | Coastal floodplain elevation and wind-load design are reviewed; historic districts require BAR approval first. Exempt: No exemption — any new conditioned footprint requires a permit. |
| 🪟 Window / Door Replacement | Conditional | city | Usually no fee for in-kind swap; permit needed if opening is enlarged. | In-kind swaps typically need no review. | Generally allowed | Coastal wind-borne-debris glazing may be required in designated regions; products must meet energy-code when triggered. Exempt: Same-size, in-kind replacement is generally exempt (2021 SC Residential Code R105.2). |
| 🏘️ Roof Replacement | Conditional | city | Often over-the-counter or exempt for same-footprint re-roof; otherwise valuation-based. | Re-roof often processed quickly (Charleston 1–2 weeks plan review). | Generally allowed | Coastal South Carolina may require wind-/impact-rated shingles (e.g., Impact IV) in higher wind zones. Exempt: Same-material, same-pitch re-roof is often exempt/over-the-counter; structural deck changes require a permit. |
| 🅿️ Driveway / Parking Pad | Conditional | city | Building permit often not required (sidewalks/driveways are broadly exempt in SC); curb-cut/right-of-way work is separate. | Right-of-way permits reviewed by the city/public works. | Generally allowed | A separate right-of-way permit is usually needed to cut the curb or connect to the street; Charleston enforces strict impervious-surface limits. Exempt: S.C. Code § 40-59-265 expressly exempts sidewalks and driveways (broader than the base IRC’s 30-in limit). |
| 🏊 Swimming Pool / Spa | Permit required | city | Valuation-based; includes barrier/fencing and electrical bonding review. | Plan review several weeks; barrier inspection required before filling. | Generally allowed | South Carolina pool-barrier rules apply; electrical bonding under the 2020 NEC with SC modifications. Floodplain setbacks may apply. Exempt: S.C. Code § 40-59-265 exempts prefabricated pools <24 in deep; permanent/in-ground pools always permitted. |
| 🧱 Retaining Wall | Conditional | city | Valuation-based when over the height threshold. | Over-threshold walls need plan review (engineering for surcharge). | Generally allowed | Coastal grading and floodplain/drainage rules can affect wall design; engineered retaining may be required in higher hazard areas. Exempt: S.C. Code § 40-59-265 exempts retaining walls not over 4 ft measured from bottom of footing to top, unless supporting a surcharge. |
| 💥 Demolition / Teardown | Permit required | city | Demolition permit fee set by the issuing authority; verify locally. | — | Generally allowed | A full teardown or major strip-out requires a demolition (building) permit. Demolition permits commonly require proof of utility disconnects (water, gas, electric, sewer) and may require asbestos/lead-paint clearance for pre-1978 homes before work begins. Verify the issuing authority for your specific property. |
| 🚰 Septic System | Permit required | county | Septic permit fee set by the local environmental/health authority; engineered systems cost more. | — | Generally allowed | New or replacement onsite wastewater (septic) systems require a permit from the state environmental/health department (or local health district). A soil/perc evaluation and engineered design are typically required; licensed installers perform the work and the system is inspected before backfill. |
| 🔌 EV Charger | Conditional | city | Electrical permit; fee set by the issuing authority. | — | Generally allowed | A home EV charging station (240V branch circuit + wall-mounted EVSE) requires an electrical permit and must meet the NEC (Article 625). Many jurisdictions fast-track residential EVSE. A load calculation and possible service upgrade are reviewed. |
| ⚡ Standby Generator | Conditional | city | Mechanical/electrical permit; fee set by the issuing authority. | — | Generally allowed | A permanently installed standby generator requires mechanical and electrical permits (transfer switch, fuel gas/propane line). Setback, carbon-monoxide ventilation, and noise rules apply; some HOAs restrict generator placement. |
Frequently asked questions
Who issues building permits in Greenville County, South Carolina?
Greenville County — Building Safety & Code Enforcement is the permitting authority for Greenville County. Permitting is split — cities issue for incorporated areas, the county for unincorporated areas. Start at the official portal linked above.
Do I go to the county or my city for a building permit in Greenville County?
Permitting is split — cities issue for incorporated areas, the county for unincorporated areas.
What home projects need a permit in Greenville County?
The same project types shown in the cheat-sheet above (ADU, deck, fence, shed, solar, and more) — rules follow South Carolina state law. Whether the county or your city issues it depends on your property's incorporation status.
How do I apply for a permit in Greenville County?
Use the official permit portal linked above. Most offices accept online submissions; have your plans, site information, and contractor details ready before applying.
Sources: Greenville County, SC — Building Safety & Code Enforcement · South Carolina Code § 40-59-265 — Exemptions from Building Permit Requirements · South Carolina Building Codes Council (2021 SC Code Adoptions) · City of Columbia — Planning & Development (Building Codes) · City of Greenville — Building & Permit Center