Unincorporated Calhoun County, Florida requires a development/building permit before construction begins, and the project must conform to the parcel's land-use district12. The Calhoun County Building Department issues building permits, while the Florida Department of Environmental Protection handles septic permits34. Owner-builders may pull their own building permit for a qualifying home they will occupy, subject to Florida's disclosure and supervision rules5.
At a glance
- Building permit
- Required for construction in unincorporated Calhoun County1
- Zoning
- County land-use districts govern unincorporated parcels2
- Septic permits
- Required through the Florida Department of Environmental Protection6
- Minimum home size
- 600 sq ft for a mobile home or single-family residence7
- Residential setbacks
- 25 ft front, 10 ft rear, and 20 ft combined side yards8
- Tiny home
- Unconventional habitable construction needs county review and approval9
- Owner-builder
- Available for a qualifying owner-occupied home with direct onsite supervision5
Who to call
Building permits
Calhoun County Building Department
Building permits, inspections, certificates of occupancy, and contractor registration for unincorporated Calhoun County
20867 SE Fannin Ave., Blountstown, FL 32424
Planning & zoning
Calhoun County Planning Department
Zoning, land-use districts, development orders, subdivisions, and the Land Use Map for Calhoun County
20867 SE Fannin Ave., Blountstown, FL 32424
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 Calhoun 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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Do you need a building permit in Calhoun County, Florida?
Yes. Construction cannot begin in unincorporated Calhoun County until the county issues the required development permit1. Construction, alteration, repair, moving, demolition, occupancy changes, and regulated trade work are subject to the Florida Building Code, 8th Edition (2023)10. Residential building-permit charges start with a $75 base fee plus valuation, and plan review costs one-half of the building-permit fee11. An owner may act as contractor for a qualifying one-family or two-family residence intended for the owner's own use, but must personally apply, directly supervise unlicensed labor, and comply with the building permit and code requirements5. The owner-builder route changes who manages the work; it does not remove the building-permit requirement5.
Who issues building permits in Calhoun County?
The Calhoun County Building Department is the building-permit contact for unincorporated property; call (850) 674-8046 or visit 20867 SE Fannin Ave. in Blountstown3. The Building Department's forms include an RV power-pole application and a manufactured-home application3. The Calhoun County Planning Department handles zoning and land-use questions at the same address and can be reached at (850) 451-587312. Before paying for plans, ask Planning to identify the parcel's district and ask Building which application, plan set, inspections, and fees fit the project123. Inspection requests for permitted residential work must be made at least 24 hours in advance, and the county requires the completed project to pass inspection before a certificate of occupancy is issued1314.
Does Calhoun County have zoning, setbacks and minimum lot sizes?
Yes. Calhoun County's land-use code applies throughout the unincorporated planning jurisdiction, where the Future Land Use Map assigns district-specific uses and density limits1516. For mobile homes and single-family houses, the residential table requires at least 25 feet in front, 10 feet in the rear, and 20 feet total across the side yards, with no more than 7 feet on one side and 13 feet on the other8. A mobile-home or single-family lot served by public water and sewer needs at least 10,890 square feet and 80 feet of width; a lot using septic needs at least 21,780 square feet and the same minimum width17. Those table minimums do not replace space needed for buffers, stormwater, parking, circulation, wetlands, or other applicable requirements17.
How do septic permits work in Calhoun County?
A Florida Department of Environmental Protection permit is required before constructing, repairing, modifying, abandoning, or operating an onsite sewage system in Calhoun County6. The application package uses DEP4015 pages 1 and 2, a building floor plan, and a site evaluation, and it may be submitted through DEP's online portal or by mail6. The evaluation examines soil, topography, and other site conditions to determine whether the property can support the proposed system4. Only about 5% of Calhoun County soils are rated without severe limitations for a conventional drain field, so complete the site evaluation before assuming a standard system will work18. We could not confirm a separate septic-inspection rule beyond FDEP's permit and site-evaluation process; ask FDEP what inspections the proposed system will require19.
Can you live in an RV or tiny home in Calhoun County?
Placing an RV on a Calhoun County parcel requires the county's RV application, which addresses one RV per non-subdivided parcel, setbacks, two parking spaces, and a 30% cap on impervious surface for the RV and accessories20. In a floodplain, the RV must stay fewer than 180 consecutive days, remain on wheels or jacks, use quick-disconnect utilities, and have no permanent attachments20. A tiny home marketed for habitable use does not bypass county review: unconventional habitable construction requires approval by T.A.C. staff and the Planning Development Review Board, with a $250 application fee and digitally designed or CAD plans9. Unincorporated Calhoun County also requires at least 600 square feet of living area for a mobile home or single-family residence7. We could not confirm a general rule for temporary camping outside the county's RV process, so ask Planning about the intended occupancy before placing an RV12.
Building a home in Calhoun County: what are the steps?
- Ask the Planning Department to confirm the unincorporated parcel's land-use district, allowed residential use, density, setbacks, and lot standards122.
- Determine whether community water or sewer must be used: connection is required when a connection is possible and practicable within 200 feet of the lot21.
- If septic is appropriate, submit the FDEP application, site plan, floor plan, and site evaluation early6.
- Choose a licensed contractor or complete the owner-builder disclosure and prepare to supervise the work directly5.
- Submit code-compliant plans and the building-permit application to the Building Department, accounting for the base, valuation, and plan-review charges113.
- Schedule required inspections at least 24 hours ahead, then obtain the certificate of occupancy before moving in1314.
What should you check before buying land in Calhoun County?
Start with the parcel's mapped land-use district because unincorporated Calhoun County density varies from 1 home per 10 acres in the Agricultural district to higher densities in other districts15. Verify that the lot can fit the applicable home, setbacks, drainage, access, and septic area rather than relying on acreage alone2217. Check utility proximity because an available community water or sewer line within 200 feet may trigger a connection requirement21. Arrange the septic site evaluation early because only about 5% of county soils lack severe conventional-drain-field limitations18. We could not confirm the local authority or process for a private well permit, so ask the Building Department which water-management or delegated permitting authority applies before budgeting for a well3.
Watch-outs
- A single-family or mobile home in unincorporated Calhoun County must provide at least 600 square feet of living area, even when it is sold as a tiny home7.
- A residential lot using septic generally needs at least 21,780 square feet and 80 feet of width under the county table, but septic suitability and other site constraints still apply17.
- Community water or sewer connection may be mandatory when an available line can be reached with a connection no longer than 200 feet21.
- We could not confirm county-specific rules for off-grid sanitation, private-well permits, short-term rentals, or temporary camping outside the RV process; ask the Building and Planning Departments before relying on those uses312.
Sources
- Calhoun County Land Development Code, quoted and re-checked
- Calhoun County, Florida Land Development Code (2026 county census)
- Calhoun County Building Department (calhouncountyfl.gov)
- Onsite Sewage FAQ - Permitting, quoted and re-checked
- 2026 Florida Statutes § 489.103, Exemptions (Florida statewide rule), quoted and re-checked
- Florida Statutes § 381.0065, Onsite sewage treatment and disposal systems; regulation, quoted and re-checked
- Calhoun County, Florida Land Development Code, quoted and re-checked
- Calhoun County Land Development Code, quoted and re-checked
- Calhoun County Building Fee Schedule, quoted and re-checked
- Florida Building Commission, quoted and re-checked
- Calhoun County Building Fee Schedule, quoted and re-checked
- Calhoun County Planning Department (calhouncountyfl.gov)
- Calhoun County Land Development Regulations, quoted and re-checked
- Calhoun County Land Development Regulations, quoted and re-checked
- Calhoun County, Florida Land Development Code, quoted and re-checked
- Calhoun County Land Development Code, quoted and re-checked
- Calhoun County Land Development Code, 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
- Florida DEP - Onsite Sewage Program FAQ (Permitting Counties) (2026 county census)
- RV Application, quoted and re-checked
- Calhoun County Land Development Regulations Combined, quoted and re-checked
- Calhoun County Land Development Regulations Combined, quoted and re-checked
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.