Unincorporated Lafayette County, Florida requires building permits for covered construction and applies county zoning and land-development regulations12. The county Building Department handles zoning review, plan review, building permits, and inspections, while the Florida Department of Health in Lafayette County permits and inspects septic systems34.
At a glance
- Building permit
- Required for covered work, subject to narrow statutory exemptions; the county reviews plans, issues permits, and inspects1
- Zoning
- County zoning and land-development regulations apply throughout unincorporated Lafayette County2
- Septic permits
- Handled by the Florida Department of Health in Lafayette County54
- RV living
- One travel trailer per parcel for up to 180 days in A-1, A-2, A-3, and ESA districts6
- Tiny home
- Possible in RSF-1 or RSF-2 if the unit qualifies as a single-family dwelling and meets all applicable standards7
- Owner-builder
- Allowed conditionally when the owner directly supervises the work and follows the statutory restrictions8
- Minimum dwelling floor area
- 150 sq. ft. of habitable rooms for the first occupant plus 100 sq. ft. per additional occupant before land-development compliance certification9
- Well permit
- Required before constructing, repairing, or abandoning a water well10
Who to call
Building permits
Lafayette County Building Department
Building permits, zoning review, plan review, inspections, and zoning administration
120 W. Main Street, Mayo, FL 32066
Septic permits
Florida Department of Health in Lafayette County, Environmental Public Health
Regulation, permitting, and inspection of septic tank systems in Lafayette County
140 SW Virginia Circle, Mayo, FL 32066
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Lafayette 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.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Lafayette County, Florida?
In unincorporated Lafayette County, covered construction, alteration, repair, and demolition require a building permit before work begins1. The Florida Building Code applies statewide without separate local adoption; the code applicable when a building-permit application is submitted governs the permitted work through the permit's life and extensions11. Work valued below $7,500 on an owner's single-family property can qualify for an exemption, but not in a flood-hazard area or for electrical, plumbing, structural, mechanical, or gas work; a written request and value documentation are required12. Qualifying nonresidential farm buildings, fences, and signs on bona fide agricultural land are exempt from the Florida Building Code and county or municipal code or fees, but residences and urban agriculture are excluded and floodplain requirements remain13. An agricultural zoning label alone does not establish that farm exemption: the building must primarily serve agriculture and be integral to a farm operation or on agricultural-classified land14.
Who issues Lafayette County building permits, and how do you reach them?
The Lafayette County Building Department is the first stop for building permits, zoning review, plan review, and inspections15. The office is at 120 W. Main Street, Mayo, FL 32066, and its phone number is (386)-294-361115. Residential permit pricing is $0.50 per square foot of conditioned space and $0.40 per square foot of unconditioned space; the published schedule also lists a $412.50 impact fee for new dwelling units, including RVs, effective October 1, 202516. The same schedule lists a $25 zoning-compliance fee and a $25 driveway permit, but it does not say when every driveway requires that permit16. Confirm the calculated fees and driveway requirements with the Building Department1516. The county zoning rules below apply to unincorporated land; inside Mayo, the town requires a development-permit application to its floodplain administrator before activities covered by its flood-damage-prevention article217. Septic permitting remains with the Florida Department of Health in Lafayette County, with additional town restrictions described below418.
Does Lafayette County have zoning?
Lafayette County zoning and land-development regulations apply throughout unincorporated Lafayette County2. For homes and mobile homes, agricultural minimum lot area and width are A-1: 40 acres and 660 feet; A-2: 10 acres and 330 feet; A-3: 5 acres and 230 feet19. Agricultural front/side/rear yards are A-1: 100/50/100 feet; A-2: 100/35/50 feet; A-3: 50/50/50 feet, with additional right-of-way and water setbacks20. RSF-1 single-family lots need 40,000 square feet and 125 feet of width; RSF-2 lots need 20,000 square feet and 100 feet of width21. RSF single-family yards are 25 feet front, 10 feet each side, and 15 feet rear; larger yards apply to other permitted uses22. Single-family homes and mobile homes in RSF/MH-1 and RSF/MH-2 have the same 25/10/15-foot yards, plus applicable right-of-way requirements23. Agricultural buildings have a 20% coverage cap; RSF single-family homes, duplexes, and accessory buildings have a 40% cap, and both district groups limit floor-area ratio to 0.52425. Agricultural and RSF structures generally cannot exceed 35 feet, subject to stated exceptions2627. Ask the Building Department to identify the parcel's district before designing15.
How do septic permits work in Lafayette County?
The Florida Department of Health in Lafayette County regulates, permits, and inspects septic tank systems4. Call Environmental Public Health at 386-294-1321; the office is at 140 SW Virginia Circle, Mayo, FL 3206628. Lafayette County's building-permit checklist requires contractors and property owners to provide a copy of the health department septic permit, so start the septic work early enough to support the building application29. Florida also requires inspection before an onsite sewage system is covered or placed into service, followed by final installation approval when the system complies30. USDA soil data rates 0% of Lafayette County soils as free from severe limits for a conventional drain field, making the site evaluation especially important before choosing a house location31. Inside Mayo, the town prohibits septic tanks within 200 feet of a sewer line and requires state-approved tanks; ask Environmental Public Health about the applicable septic approval before buying1828. A private well needs a separate permit through the appropriate water management district or delegated authority10.
Can you live in an RV, tiny home, or mobile home in Lafayette County?
In unincorporated Lafayette County's A-1, A-2, A-3, and Environmentally Sensitive Area districts, one travel trailer may occupy a parcel for no more than 180 days, excluding travel-trailer parks6. A mobile home or travel trailer used during active construction ordinarily cannot remain beyond 12 months without county commission approval based on continuing construction32. A tiny home in RSF-1 or RSF-2 must qualify as a single-family dwelling; mobile homes, vehicle-mounted housing, and temporary or portable housing do not qualify7. Before land-development compliance certification, an unincorporated dwelling needs at least 150 square feet of habitable rooms for the first occupant plus 100 square feet per additional occupant, with separate sleeping-room and ceiling-height standards9. Mobile homes are accommodated in RSF/MH and RMH districts subject to anchoring, skirting, and applicable building, floodplain, utility, and septic requirements33. In agricultural districts, an accessory mobile home may house relatives of the principal household under a temporary-use permit lasting up to 5 years, renewable by reapplication; it must stay outside required yards and at least 20 feet from any building34. Ask the Building Department to classify the proposed home and use before purchase15.
What are the steps to build a home in Lafayette County?
- Ask the Building Department to confirm the parcel's zoning district, allowed residential use, setbacks, access, and floodplain requirements1535.
- Arrange the health department's septic review and obtain the septic permit required for the county building-permit file2829.
- Obtain the separate water-well permit if the property will use a private well10.
- Submit building plans for zoning and Florida Building Code review, then pay the calculated permit fees316.
- Build only after approval and schedule county inspections through completion3.
What should you check before buying land in Lafayette County?
For a divided parcel in unincorporated Lafayette County, verify final-plat approval by the Board of County Commissioners and filing with the Clerk of the Circuit Court: nonconforming parcels created by subdivision after the regulations took effect cannot receive building permits36. Minor subdivisions require a pre-application conference and final plat; major subdivisions also require a preliminary plat and construction plans36. Published subdivision fees are $750 for minor applications and $2,000 for major applications37. Evaluate septic suitability before choosing the homesite because 0% of county soils are rated free of severe limitations for conventional drain fields31. In agricultural districts, structures generally need 35 feet from wetlands, 75 feet from the Suwannee River, and 50 feet from other perennial rivers, streams, and creeks, except permitted docks, walkways, and piers20. Ask the Building Department to reconcile district buffers, waterfront setbacks, and floodplain requirements for the parcel1538. The effective property-tax rate is about 0.6%, and the median annual bill is about $8503940.
Watch-outs
- The 180-day travel-trailer allowance is limited to specified rural and environmentally sensitive zoning districts; it is not a blanket permission for every parcel in Lafayette County6.
- An accessory mobile home in an agricultural district is a conditional temporary residence for relatives of the principal household, not a general second-home allowance34.
- A tiny home in RSF-1 or RSF-2 must qualify as a single-family dwelling; vehicle-mounted, temporary, and portable housing do not qualify under that use7.
- We could not confirm a general county certificate-of-occupancy procedure; ask the Building Department which final approvals apply before occupancy15.
Sources
- 2026 Florida Statutes § 553.79 — Permits; applications; issuance; inspections, quoted and re-checked
- Planning & Zoning, quoted and re-checked
- Lafayette County Building Department | Permits, Inspections & Codes, quoted and re-checked
- Septic Systems - Florida Department of Health, quoted and re-checked
- Florida Department of Health in Lafayette County – Onsite Sewage Disposal (2026 county census)
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- 2024 Florida Statutes — F.S. 489.103 Exemptions, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Water Well Contractor Licensing and Permitting, quoted and re-checked
- 2026 Florida Statutes, Section 553.73, quoted and re-checked
- 2026 Florida Statutes § 553.79 — Permits; applications; issuance; inspections, quoted and re-checked
- Florida Statutes § 604.50, Nonresidential farm buildings; farm fences; farm signs, quoted and re-checked
- Florida Statutes § 604.50, quoted and re-checked
- Lafayette County Building Department (lafayettecountyfl.org)
- Permit Fee Schedule | Lafayette County BOCC, quoted and re-checked
- Town of Mayo: Town of Mayo Code of Ordinances, Sec. 16-53 (Lafayette County), quoted and re-checked
- Town of Mayo: Mayo Code of Ordinances, § 28-29, Septic tank (Lafayette County), quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- lafayette-clerk.s3.amazonaws.com, quoted and re-checked
- lafayette-clerk.s3.amazonaws.com, quoted and re-checked
- Florida Department of Health in Lafayette County, Environmental Public Health (lafayette.floridahealth.gov)
- Permitting Requirements, quoted and re-checked
- Onsite Sewage Program (Florida statewide rule), quoted and re-checked
- 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
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Planning & Zoning | Lafayette County BOCC, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Permit Fee Schedule | Lafayette County BOCC, quoted and re-checked
- Lafayette County Land Development Regulations, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 10, 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.