Unincorporated Alachua County, Florida generally requires a building permit for construction, alterations, demolition, occupancy changes, and electrical, gas, mechanical or plumbing work, issued by the county Building Division1. The county's Unified Land Development Code zones unincorporated land, and any lot split beyond one simple division is a subdivision needing Development Review2,3. Inside Gainesville, Archer and Alachua, the city sets zoning4,5,6. Septic permits come from the Florida Department of Health in Alachua County, city or not7.
Do you need a building permit in Alachua County, Florida?
Yes.
Yes. Alachua County generally requires a permit to construct, enlarge, alter, move or demolish a building, change its occupancy, or install or alter an electrical, gas, mechanical or plumbing system1. Redecorating and minor repairs such as cabinet or floor-covering replacement, painting, limited drywall repair, fixture replacement without plumbing changes, and appliance or light replacement without wiring changes generally do not require one1. Alachua County adopted the Florida Building Code with local administrative amendments and wind-speed lines, and the county currently lists the 2023 Florida Building Code, 8th Edition13. Permitted work must remain accessible and exposed until each required inspection is approved14. A new or altered building cannot be occupied until the building official issues a certificate of occupancy after the required systems pass inspection14. An Alachua County building permit is valid for 180 days, and construction must begin during that period1. In unincorporated Alachua County, a nonresidential farm building may qualify for the Florida Building Code permit exemption only on bona fide agricultural land when it is used primarily for agriculture and never as a dwelling; the county still requires a site sketch, zoning and setback review, and a flood-zone permit when applicable15.
Who is the Alachua County building department?
The Alachua County Building Division, at the County Annex Building, 10 SW 2nd Avenue in Gainesville, issues building permits and schedules inspections for unincorporated Alachua County.
The Alachua County Building Division, at the County Annex Building, 10 SW 2nd Avenue in Gainesville, issues building permits and schedules inspections for unincorporated Alachua County1. Call 352-374-5243, Monday through Thursday 8:00 a.m. to 4:00 p.m. or Friday 8:00 a.m. to 1:00 p.m., or email building@alachuacounty.us1. The same Growth Management department's Planning & Development side, reachable at 352-374-5249, handles comprehensive plan questions, rezonings and zoning-district interpretation1. Every building permit starts with a minimum base fee of $150 for single-family new construction, additions and alterations, plus a fee based on construction value, and starting work before approval adds a penalty of 100 percent of the usual fee16. An owner may perform work on a home the owner owns and occupies, but required permits still apply and the property cannot be offered for sale or lease for 1 year after final completion1. Bring a site plan if you are building a driveway, construction drawings for an addition, or a full construction document set for a new home; what you need depends on the project, so call ahead1.
Does Alachua County have zoning?
Yes.
Yes. New development in unincorporated Alachua County must meet the county's Unified Land Development Code, which publishes zoning districts, use rules, and development standards such as setbacks, parking, signs, landscaping and subdivision requirements2. A parent tract may be divided once without subdivision review only when the resulting lots meet the county's frontage, direct public-road access, minimum lot-size, driveway and recording conditions; every other lot split is a subdivision that must go through Development Review under Chapter 407, Article 8 of the ULDC, and any subdivision producing more than 2 lots from a parent parcel needs Development Review Committee approval3. On a single-family lot under 1 acre, the principal building's minimum setbacks are 10 feet front, 10 feet rear and 5 feet side; on a lot of 1 acre or more they are 15 feet front, 15 feet rear and 10 feet side10. Single-family residential districts have a 35-foot maximum building height10. Multifamily developments have perimeter setbacks of 25 feet at the front and street side, 20 feet at the rear and 10 feet at the interior side, with an increased interior-side setback for taller buildings next to single-family residential uses10. Maximum multifamily height varies by district: 35 feet in R-2, 45 feet in R-2a and 60 feet in R-310. Under the Family Homestead Exception, a Rural/Agriculture parent tract of at least 2 acres can yield a lot of at least 1 acre, with a 25-foot minimum front setback for the house17. In a Rural Cluster, a single-family lot served by a private well and septic tank needs at least 1 acre10. The county ULDC applies to unincorporated land. Inside Archer the city issues its own building permits and runs its own zoning5,18; inside Alachua the city administers its own Land Development Regulations6; inside Gainesville the city's Land Development Code governs zoning districts, permitted uses and development review4. Septic permits stay with the county health department for every address, city or not, including inside Archer, where city code defers to the state health department7,19.
How do septic permits work in Alachua County?
Septic (OSTDS) permits and inspections in Alachua County are handled by the Florida Department of Health in Alachua County.
Septic (OSTDS) permits and inspections in Alachua County are handled by the Florida Department of Health in Alachua County7. The state Department of Environmental Protection still enforces Florida's septic laws and rules even where the county health department issues the permit7. You need a permit for a proposed installation, repair, modification or approval of an existing system20. Soils matter here: only about 15.1% of Alachua County's soils rate as not severely limited for a conventional drain field, meaning most mapped soils have severe conventional-drain-field limitations and deserve an early site evaluation21. Private well and septic systems are allowed on residential lots that meet the ULDC's lot-size table, state standards and local health department approval22. New development or redevelopment within the county's Urban Cluster generally must connect when centralized water and sewer are available, subject to the stated exceptions22. Call Environmental Health at 352-334-7930 before relying on a seller's description of an existing system or designing a new one7.
Can you live in an RV, tiny home or accessory unit on your land in Alachua County?
Unincorporated Alachua County allows 1 RV or tiny house on wheels for living, sleeping and housekeeping on an individual legal lot in the A, A-RB and RM zoning districts, in place of an otherwise allowed primary home or accessory dwelling unit.
Unincorporated Alachua County allows 1 RV or tiny house on wheels for living, sleeping and housekeeping on an individual legal lot in the A, A-RB and RM zoning districts, in place of an otherwise allowed primary home or accessory dwelling unit23. The unit needs an issued address and zoning compliance permit, district setbacks, approved water and sewer or permitted septic connections, compliant electrical equipment, ground anchoring, alarms and recognized RV or tiny-house certification23. An RV may also be occupied in an RM-1 travel recreational vehicle park and campground district or in designated areas under an approved management plan for a park, preserve or historic site17. A manufactured or mobile home needs an onsite inspection for compliance with state installation standards before it gets a certificate of occupancy, and county zoning and site-development rules still apply24. While you build, a temporary placement permit from the county can allow a construction residence for an owner building a site-built home, valid only while the building permit is valid, and an emergency residence for up to 2 years after a fire or storm makes a home uninhabitable25. Alachua County allows one accessory dwelling unit in listed residential zoning districts and future land-use designations, with no minimum size and up to 1,700 square feet or 50% of the principal residence's gross square footage, whichever is greater11. A properly permitted accessory dwelling unit may be rented short term if tourist-development taxes are paid and the owner lives in either home on the property while maintaining the homestead exemption11. The zoning approval carries a $70 fee and comes before the building permit; on a rural property under five acres without central sewer, the Health Department must confirm that combined septic impact will not exceed 700 gallons per day11.
Building a home in Alachua County: what are the steps, in order?
Confirm your parcel's zoning district, setbacks and future land-use designation with Growth Management Planning & Development at 352-374-5249 before you design anything.
- Confirm your parcel's zoning district, setbacks and future land-use designation with Growth Management Planning & Development at 352-374-5249 before you design anything1.
- If you are not connecting to central sewer, get a site evaluation from the Florida Department of Health in Alachua County at 352-334-7930; on a Rural Cluster lot the minimum size for a well-and-septic lot is 1 acre7,10.
- If your lot touches a mapped floodplain, get a flood zone determination from Alachua County Public Works at 352-337-6140 and a flood hazard area permit before you build12.
- Apply for your building permit through the Building Division at 352-374-5243, with a site plan for driveway work or a full construction document set for a new home1.
- Schedule inspections as work proceeds under the statewide Florida Building Code26.
- Start construction within the permit's 180-day validity period1.
- After final inspection of electrical, gas, mechanical, plumbing and fire-protection systems, the building official issues your certificate of occupancy14.
What should you check before you buy land in Alachua County?
All mapped land in Alachua County is at a slope of 15% or less, and about 65.8% of the county is wooded.
All mapped land in Alachua County is at a slope of 15% or less, and about 65.8% of the county is wooded21. Septic feasibility is a major variable: only about 15.1% of the county's soils rate as not severely limited for a conventional drain field, so order a site evaluation before assuming a standard system will work21. Only about 0.5% of the county is federal land, but a buyer should still confirm whether a specific tract has conservation restrictions or protected areas21. The nearest city of 100,000 or more is about 3 miles from the county center, and countywide population density is about 326.6 people per square mile, so rural parcels may still sit near substantial development21. Typical home insurance is about $2,159 per year, while the median property tax bill is about $2,623 per year at an effective rate near 1%21. If the parcel is near a mapped flood zone, request a determination from Alachua County Public Works before closing because development in the floodplain requires a flood hazard area permit12. Confirm legal road access and whether a county right-of-way connection needs a driveway permit before treating an existing track as buildable access1.
Watch-outs
- Alachua County sets no minimum size for a qualifying accessory dwelling unit, but we could not confirm a countywide minimum size for a principal home or a maximum lot-coverage rule; confirm both design limits with Growth Management Planning & Development at 352-374-52491,11.
- Well permitting in Alachua County depends on which water management district your parcel sits in: the St. Johns River district requires a permit mainly for wells 6 inches or larger in diameter, while the Suwannee River district requires a permit for any well; confirm your district with the county before you plan a well27.
Sources
27 official pages, each quoted and re-checked · written October 16, 2026
- Building Permits
- Land Development Code (ULDC)
- Lot Splits
- Land Development Code
- Archer: Archer Comprehensive Plan Future Land Use Objective I.1 (Alachua County)
- Alachua: Alachua Code, Sec. 4.4 Accessory uses and structures (Alachua County)
- Onsite Sewage Disposal
- Land Development Code (ULDC)
- Building Permits (2026 county census)
- Unified Land Development Code, Chapter 403
- Accessory Dwelling Units
- Development Review & Flood Zone Information
- Building Codes
- Alachua County Building Code
- Affidavit of Qualification for Nonresidential Farm Building Permit Exemption
- Building Division Fee Schedule
- Unified Land Development Code, Chapters 400–410
- Archer: Archer Code Sec. 8-20 Building permit required (Alachua County)
- Archer: Archer Code Sec. 32-123 Method of disposal required (Alachua County)
- Septic Systems and Rebates
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- growth-management.alachuacounty.us
- Land Development Code (ULDC)
- Florida Statutes § 320.8285: Onsite inspection (Florida statewide rule)
- Unified Land Development Code
- Florida Statutes § 553.73, Florida Building Code
- Well Permits
Written October 16, 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.
Off-grid gear
Going off-grid in Alachua County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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