Unincorporated Florence County, South Carolina requires a county building permit before you build a home1. The Florence County Planning Department implements the county zoning ordinance and building codes23. Where public or community sewer is unavailable, SCDES must approve the septic system before the county can issue the building permit45.
At a glance
- Building permit
- Required, issued by the county Planning Department1
- Zoning
- Yes; confirm the parcel's district and standards with county Planning6
- Septic permits
- State-issued by SCDES, not the county75
- Owner-builder exemption
- Yes, if you personally supervise and file the required notice8
- Septic permit validity
- 5 years before renewal is required5
- Residential well permit
- $70 Notice of Intent filed with SCDES before drilling9
- Soils rated favorable for a standard septic field
- About 17% of the county's soils10
- Inspections
- Required at specified phases of permitted work11
Who to call
Building permits
Florence County Planning Department
Building permits, zoning, engineering, code enforcement, E-911 addressing and floodplain determinations for Florence County
Building permits
Florence County Planning Department (Florence office)
The Planning Department's physical office location in Florence
518 S. Irby St., Florence, SC 29501
Contact details are copied from each office’s official page and were checked against it on September 27, 2026.
Do you need a building permit in Florence County, South Carolina?
Unincorporated Florence County requires a building permit for a home, and the Florence County Planning Department implements the building and residential codes13. If the home will not be on public or community sewer, the county cannot issue that building permit until you hold the state septic permit5. South Carolina law lets a property owner act as their own unlicensed builder for a home intended for the owner's or the owner's family's occupancy, but the owner must personally supervise construction, personally sign the permit application, and use licensed contractors where required8. The owner must also file the required notice with the register of deeds; selling or renting within two years is evidence that the exemption should not have applied unless the commission approves otherwise12. Florence County requires inspections at specified phases of permitted building, electrical, plumbing, mechanical, and gas work11. The current statewide code set is the 2021 South Carolina Building Codes, effective since January 1, 202313.
Who is the Florence County building department, and how do you reach them?
The Florence County Planning Department is the starting point for county building permits, building inspection, zoning, code enforcement, engineering, E-911 addressing, and floodplain questions14. Reach the department's main office at (843) 676-860014. The Planning Department's Florence office is at 518 S. Irby St., Florence, SC 2950115. Florence County's published process calls for zoning compliance, the building permit application, the plan-review fee, and three complete plan sets, along with other documents that apply to the project16. The county states an initial review time of two days for residential plans and fourteen days for commercial plans16. Permit fees vary with total project cost, while the plan-review fee is half the permit fee16.
Does Florence County have zoning, and what does it mean for your land?
Florence County has a zoning ordinance administered by the Planning Department, but the applicable district and district-specific standards still must be checked for each parcel62. South Carolina law lets a county zone its entire unincorporated area or selected parts of it after the required comprehensive-plan work17. Zoning rules must be uniform within a district, although standards can differ between districts17. Our reviewed sources do not establish the operative minimum home size, minimum lot size, setbacks, lot coverage, building height, accessory-dwelling rules, or agricultural exemptions for a particular Florence County parcel. Ask the Planning Department to identify the parcel's zoning district and the current use and dimensional standards before relying on a listing description14. If a tract will be divided, Florence County publishes subdivision review and charges a $100 county review fee plus $25 per lot or acre18.
How do septic permits work in Florence County?
Florence County does not issue septic permits itself: South Carolina requires site approval and a permit from the state before you build a home or place a manufactured home on land not served by public or community sewer, and the county will not issue a building permit until you have it75. As of July 1, 2024, that state authority is the South Carolina Department of Environmental Services (SCDES), which took over septic permitting from DHEC7. A Permit to Construct a septic system is good for five years; renewing it or changing the approved design both require a new application and fee5. South Carolina law does not require routine inspection of an existing septic system unless a local ordinance says otherwise, but a new home using a septic system must have its site evaluated by SCDES before the permit is issued, and the installer must call SCDES for a final inspection before the system is covered19. An onsite wastewater permit cannot be issued at all where public sewer is accessible to the parcel, so that has to be checked first20. Only about 17% of Florence County's soils are rated free of severe limits for a conventional drain field, which is worth planning for before you commit to a parcel10. If you will need a well instead of, or alongside, a septic system, South Carolina requires a Notice of Intent filed with SCDES before drilling, with a $70 fee for an individual residential well and a review that the state targets within 48 hours9.
Can you live in an RV or tiny home on your land in Florence County?
Our reviewed sources do not confirm whether Florence County allows long-term RV living or temporary camping on a private parcel. The state rule limiting a state-park campsite to fourteen consecutive days without department permission applies to state parks, not private land21. Our reviewed sources also do not establish a Florence County rule specifically for tiny-home occupancy, accessory dwellings, or minimum dwelling size. Florence County does administer a zoning ordinance whose district-specific standards must be checked2. Before buying land for an RV or tiny home, ask the Planning Department whether the parcel's zoning district allows the proposed use, whether temporary occupancy during construction is allowed, and what building, septic, and utility approvals apply14. A manufactured home on land without public or community sewer requires SCDES approval and a septic permit before placement4.
Building a home in Florence County: the steps, in order
- Ask the Florence County Planning Department to confirm the parcel's zoning district, allowed use, address, floodplain status, and required county approvals14.
- If public or community sewer is unavailable, obtain the SCDES septic approval and Permit to Construct before applying for the county building permit5.
- If a residential well is needed, file the SCDES Notice of Intent and its $70 fee before drilling9.
- If you will use the owner-builder exemption, personally sign the application, supervise the work, use properly licensed trades, and record the required notice8.
- Submit the county building permit application, the plan-review fee, three complete plan sets, and the other project-specific documents listed by Florence County16.
- If the driveway enters a state highway, coordinate the qualifying residential entrance with SCDOT22.
- Request each required county inspection at the specified construction phase and correct violations before starting the next phase11.
What to check before you buy land in Florence County
Soils: only about 17% of Florence County soils are rated without severe limits for a conventional septic drain field, so make the SCDES site evaluation part of the purchase contingency when septic feasibility matters1019. Flooding: Florence County requires a permit for development in a regulatory floodplain or wetlands area, and regulatory-floodplain development requires elevation certificates during the construction process23. Terrain: about 99.7% of county land has a slope of 15% or less, but gentle ground does not establish that a parcel is outside a flood hazard area24. Access: a qualifying personal-use residential driveway within a state-highway right-of-way is handled by SCDOT, subject to safety and design conditions22. Florence County has about 137,000 residents and roughly 171 people per square mile; the nearest city of 100,000 or more is about 67 miles from the county center252627. The effective property-tax rate is about 0.4%, and the median annual property-tax bill is about $7242829.
Watch-outs
- South Carolina's Building Codes Council adopted the 2024 edition of the mandatory codes on August 26, 2025, but local jurisdictions including Florence County do not have to implement them until January 1, 2027, so confirm which code year applies to your permit date30.
- Septic permitting in Florence County moved from DHEC to the new South Carolina Department of Environmental Services (SCDES) on July 1, 2024; older sources naming DHEC describe the same permit now issued by SCDES7.
- Whether an RV, camper or manufactured home can be lived in on an individual lot is not itemized in what we found for Florence County; the only related state rule covers state park campsites, not private land, so confirm with the Planning Department before placing one2114.
Sources
- Florence County SC - Planning Department (2026 county census)
- Florence County Planning, quoted and re-checked
- Florence County Planning, quoted and re-checked
- Septic Tanks - Residential, Single Home Builder, quoted and re-checked
- Septic Tanks - Residential, Single Home Builder (South Carolina statewide rule), quoted and re-checked
- Florence County Planning (2026 county census)
- SC Department of Environmental Services - Septic Tanks (Residential) (2026 county census)
- South Carolina Code Title 40, Chapter 59 — Residential Builders (South Carolina statewide rule), quoted and re-checked
- Private Drinking Water Wells (South Carolina statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Florence County Building Permits and Inspections, quoted and re-checked
- South Carolina Code Title 40, Chapter 59, quoted and re-checked
- Building Code Adoption (South Carolina statewide rule), quoted and re-checked
- Florence County Planning Department (florencecountysc.gov)
- Florence County Planning Department (Florence office) (florencecountysc.gov)
- Florence County Building Permits and Inspections, quoted and re-checked
- South Carolina Code Title 6, Chapter 29 — Local Government Comprehensive Planning (South Carolina statewide rule), quoted and re-checked
- Florence County Fees, quoted and re-checked
- Septic Tanks - Frequently Asked Questions (South Carolina statewide rule), quoted and re-checked
- Professional Soil Classifiers - Sewer Accessibility Verification (South Carolina statewide rule), quoted and re-checked
- South Carolina Code Title 51, Chapter 3, State Parks (South Carolina statewide rule), quoted and re-checked
- Engineering Directive ED-16: Driveway Entrances (South Carolina statewide rule), quoted and re-checked
- Florence County Flood Plains, quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- County population: Bolthole Index county data
- Population density: Bolthole Index county data
- Distance to the nearest metro area: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- 2024 Building Code Modification Index (South Carolina statewide rule), quoted and re-checked
Written September 27, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.