Zoning, building permits and septic rules in Largo, Florida

At a glance

Zoning

Largo's own Comprehensive Development Code, with land use districts¹

Building permits

City of Largo Building Services Division²

Septic permits

Florida Department of Health in Pinellas County³

Tiny homes

Allowed in the same places as their construction type (house, manufactured home or RV)⁴

Manufactured homes

Development Permit required before placement⁵

RV camping

Prohibited on city park grounds except where the city designates it; private land not confirmed⁶

Building code

Florida Building Code, 8th Edition (2023)⁷

Who to call

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Does Largo, Florida have zoning, and what does it mean for tiny homes and lot size?

Largo administers its own zoning through its Comprehensive Development Code, which sets land use districts for land inside city limits¹. Pinellas County's zoning applies only to unincorporated land, so the county's districts do not govern a lot inside Largo⁸.

Dimensional rules depend on the district. For older lots subdivided before 1983 or as originally platted, the infill table sets a minimum of 9,500 square feet in the Residential (R-1) district, with 25-foot front, 8-foot side and 10-foot rear setbacks⁹¹⁰. The Agricultural Estate (A-E) district is far larger: 87,120 square feet minimum, with 50-foot front and 25-foot side and rear setbacks¹¹¹². Single-family buildings may not exceed 2 stories¹³.

Largo allows tiny houses in the same locations as their classification is allowed: a Florida Building Code dwelling, a HUD manufactured home or an RV⁴. Only a code-built tiny house can be an accessory dwelling⁴. Camping on Largo park grounds is prohibited except at times and places the city designates⁶; we could not confirm a rule for living in an RV on private land, so ask the Planning & Development Services Division¹⁴.

Do you need a building permit in Largo, and who issues it?

Inside Largo, the city's Building Services Division oversees construction permits and inspections, and applicants use the Largo Civic Access Portal². We could not confirm the city's permit thresholds, fees or owner-builder rules, so call the division before you start. Pinellas County's building permit rules cover only unincorporated land, and county requirements do not apply inside city limits¹⁵.

Florida sets one statewide code: the Florida Building Code, 8th Edition (2023)⁷. Largo's building office says the 9th Edition takes effect 12/31/2026, and permit applications submitted on or after that date must comply². Manufactured homes need a Development Permit from Largo before placement, and pre-owned units need engineer inspections before and after relocation⁵.

How do septic permits work in Largo, Florida?

Septic permits are not a city function. In Pinellas County, septic permitting and inspection belong to the Florida Department of Health in Pinellas County, and the state requires a permit to install, repair or modify a septic system³¹⁶. Pinellas County allows onsite systems only where public sewer connection is not required and soils are suitable¹⁷.

The USDA soil survey rates 0% of Pinellas County soils as not limited for a conventional drain field, so conventional drain fields rate poorly and a site evaluation, often with an engineered system, is likely¹⁸. We could not confirm whether sewer connection is mandatory at a given Largo address, so ask the city before you plan on a septic system. Well permits come from the regional water management district, not the city¹⁹.

Building a home in Largo: the steps, in order

1. Confirm the lot's zoning district and its minimum lot size and setbacks with the Planning & Development Services Division¹⁴.
2. Ask the city whether public sewer is available at the address; if it is not, contact the Florida Department of Health in Pinellas County about a septic permit²⁰.
3. Apply for building permits through the Largo Civic Access Portal and the Building Services Division².
4. If the lot is in a flood zone, ask the city about floodplain requirements; we could not confirm the general permit rule inside Largo.
5. Plan inspections with the Building Services Division as work proceeds².

What stays with Pinellas County, and what to check before you buy in Largo?

For land outside Largo's limits, see the Pinellas County page for the county's rules in unincorporated areas. Septic stays with the county health department either way³.

County-level numbers: Pinellas County's effective property tax rate is 0.7%²¹ and typical home insurance runs about $4,764 a year²². Verify the lot's flood zone before you buy; Largo's building office describes a substantial damage process for flood hazard areas after the hurricanes².

Watch-outs

• The city of Largo and unincorporated Pinellas County have different building permit and zoning offices, so confirm the lot is inside city limits before calling anyone⁸.
• Largo's building code moves to the 9th Edition for applications submitted on or after 12/31/2026².
• We could not confirm Largo's permit fees, owner-builder rules, driveway rules or minimum dwelling size; ask the Building Services Division².

Sources

1. Largo CDC 17.5 Nonconformities (Largo), quoted and re-checked
2. City of Largo Building Services Division (largo.com)
3. Onsite Sewage Disposal and Septic Tanks, quoted and re-checked
4. Largo CDC 15.22.1 Tiny Houses (Largo), quoted and re-checked
5. Largo CDC 15.3.6 Manufactured Homes Permitting (Largo), quoted and re-checked
6. Largo Code Sec. 17-31 Camping (Largo), quoted and re-checked
7. 61G20-1.001 Florida Building Code Adopted (Florida statewide rule), quoted and re-checked
8. Zoning & Land Use - Pinellas County, quoted and re-checked
9. Largo CDC 8.3.2 Infill Lots, Table 8-2 (Largo), quoted and re-checked
10. Largo CDC 8.3.2 Infill Lots, Table 8-2 (Largo), quoted and re-checked
11. Largo CDC 8.3.2 Infill Lots, Table 8-2 (Largo), quoted and re-checked
12. Largo CDC 8.3.2 Infill Lots, Table 8-2 (Largo), quoted and re-checked
13. Largo CDC 8.5.3 Maximum Height (Largo), quoted and re-checked
14. City of Largo Planning & Development Services Division (largo.com)
15. Building Frequently Asked Questions, quoted and re-checked
16. OSTDS Construction Application (Florida statewide rule), quoted and re-checked
17. Onsite Sewage Disposal and Septic Tanks, quoted and re-checked
18. 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
19. Water Well Contractor Licensing and Permitting (Florida statewide rule), quoted and re-checked
20. Florida Department of Health in Pinellas County (pinellas.floridahealth.gov)
21. Effective property tax rate: Bolthole Index county data
22. Typical home insurance premium: Bolthole Index county data

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.