Bolthole Index

St. Lucie County, Florida

Building permits, zoning and land rules in St. Lucie County, Florida

45Index Score / 100
#59 of 67 in Florida

Unincorporated St. Lucie County, Florida requires a building permit for a home, and the county's Permitting/Zoning Division administers zoning and development review123. Inside Fort Pierce, the city sets its own zoning4. Septic permits for every address come from the Florida Department of Health in St. Lucie County, which also permits all wells56.

At a glance

Building permit
Required, issued by the county's Permitting/Zoning Division1
Zoning
Yes, under the county's Land Development Code72
Septic permits
Required through the Florida Department of Health in St. Lucie County8
Owner-builder
Available with owner occupancy or use and direct onsite supervision9
RV living on your own land
Restricted outside approved parks; a narrow guest exception applies10
Private wells
All wells require a permit through the local health department11
Septic soil suitability
Almost no soil is free of severe limits for a conventional drain field12

Who to call

Building permits

St. Lucie County Planning and Development Services, Permitting/Zoning Division

Building permits, plan review and inspections, and zoning administration under the county's Land Development Code for unincorporated St. Lucie County

(772) 462-1553

2300 Virginia Avenue, Fort Pierce, FL 34982

Septic permits

Florida Department of Health in St. Lucie County, Environmental Public Health

Onsite sewage treatment and disposal system (septic/OSTDS) construction, repair and abandonment permits, soil/site evaluations, and septic/well permit records for St. Lucie County

772-873-4931

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

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Do you need a building permit in St. Lucie County, Florida?

Yes. St. Lucie County requires a permit for construction, erection, alteration, repair and occupancy of buildings in unincorporated St. Lucie County1. Florida has adopted the Florida Building Code statewide, and its 8th Edition became effective December 31, 20231314. Development in unincorporated St. Lucie County, including a driveway connection, is not authorized without the necessary Development Permits, and a Certificate of Zoning Compliance comes first15. County development-review applications are accepted only after the minimum submittals are provided, then transmitted to the Development Review Committee; requirements vary by application type and more may emerge during review3. Florida's owner-builder exemption requires direct onsite supervision, personal signature on the permit application, owner occupancy or use, and compliance with building and zoning rules; a sale or lease within one year creates a presumption that the work was undertaken for sale or lease9. County fees include a $75 minimum plan-review fee; the listed single-family residence fee is $250 for a contractor permit or $350 for an owner-builder permit, before other applicable charges16.

Who is the St. Lucie County building department, and how do you reach them?

Building permits for unincorporated St. Lucie County are issued by the county's Planning and Development Services Permitting/Zoning Division17. The permit center is at 2300 Virginia Avenue, first floor, southwest corner of the building, in Fort Pierce, open Monday through Friday from 8:00 a.m. to 4:30 p.m.; call (772) 462-155317. The same division administers zoning for unincorporated areas, making it the first stop for both a parcel's zoning district and its building-permit path7. The county's rules here apply to unincorporated land; whether Fort Pierce runs its own building permits we could not confirm, so ask the city. The county publishes building and zoning fees, including $25 for zoning verification and $25 for a flood-zone verification letter16.

Does St. Lucie County have zoning?

Yes. Unincorporated St. Lucie County has county zoning and land-development regulation; Chapters 3, 4 and 7 of the Land Development Code cover zoning districts, overlays and development-design standards218. Inside Fort Pierce, the city adopts its own zoning districts4; the county's zoning rules do not apply there. A zoning district must be compatible with the parcel's future-land-use designation unless a corresponding map amendment is requested19. In Residential Estate areas, intended for large-lot homes at one unit per gross acre, central utilities are not required, though connections should be provided when practical20. Under the Towns, Villages and Countryside policies, an accessory dwelling is limited: an individual lot owner need only verify potable water and sanitary sewer service, and an RV or mobile home is not an accessory dwelling21. Oak Ridge Ranches has separate site-specific rules, including parking and traffic review, no separate sale or subdivision of the accessory unit, and an affordability limit if it is rented22. We could not confirm countywide minimum dwelling size, minimum lot size or setback figures; ask the Permitting/Zoning Division for the standards tied to the parcel's district17.

How do septic permits work in St. Lucie County?

The Florida Department of Health's local county health department issues onsite sewage treatment and disposal system permits in St. Lucie County, and that applies in city and county alike523. Submit the septic application, site plan, building floor plan and fee to the local health department; a qualified professional must perform a site evaluation, and the final fee depends on the system and requested services24. The local instructions also call for a private soil evaluation, scaled site plan, three floor-plan copies and three site-plan copies; clear the lot and provide access information before applying25. Only about 0.4% of county soil is rated without severe limitations for a conventional drain field, making early evaluation especially important12. Since July 1, 2022, an owner, or a contractor with the owner's authorization, may hire a private provider to perform septic inspections26.

Can you live in an RV or tiny home on your land in St. Lucie County?

Unincorporated St. Lucie County restricts using an RV-type unit as a residence outside an approved campground or travel-trailer park, subject to a possible code exception10. A gratuitous guest may temporarily occupy an RV for no more than 72 hours in any 30-day period10. An RV or mobile home also does not qualify as an accessory dwelling under the Towns, Villages and Countryside policy27. We could not confirm a complete tiny-home occupancy rule or countywide minimum dwelling size. A tiny home proposed as a dwelling still requires building-permit and zoning review, so ask the Permitting/Zoning Division whether the parcel's district and the proposed structure qualify12817.

Building a home in St. Lucie County: the steps, in order

  1. Confirm the parcel's zoning district, future-land-use designation and proposed use with the Permitting/Zoning Division1917.
  2. If dividing land, prepare for subdivision review and a preliminary record plat with property-owner or homeowners-association documents; additional requirements may arise during review2930.
  3. If the parcel is off sewer, obtain a site evaluation and submit the septic application, site plan, floor plan and fee to the local health department24.
  4. If the parcel needs a private well, apply through the local health department, which permits all wells in St. Lucie County631.
  5. Choose a licensed contractor or satisfy the owner-builder conditions, including direct onsite supervision and owner occupancy or use9.
  6. Submit complete building and development-review materials; incomplete applications are not accepted for review32.
  7. In an identified 100-year flood zone, follow the county's Flood Damage Protection regulations33.

What to check before you buy land in St. Lucie County

Check sewer availability and soil suitability before treating a parcel as buildable: only about 0.4% of county soil is rated without severe limitations for a conventional septic drain field12. Every well in St. Lucie County needs a permit from the Florida Department of Health in St. Lucie County, under a program delegated by the South Florida Water Management District11. Large-lot Residential Estate areas are not required to have central utilities, so confirm whether water and sewer reach the parcel20. Determine whether the home site falls in a Special Flood Hazard Area, because the county requires an Elevation Certificate at three stages for residential construction there34. Confirm legal access and driveway requirements with the Permitting/Zoning Division because we could not confirm the complete county driveway-permit rule17. For carrying costs, the median property-tax bill is about $2,893 a year, the effective property-tax rate is about 0.9%, and typical homeowners insurance is about $2,777 a year353637.

Watch-outs

  • Only about 0.4% of St. Lucie County soil is rated without severe limitations for a conventional drain field, so order the required private soil evaluation early128.
  • A home in a Special Flood Hazard Area needs an Elevation Certificate with its construction documents, during construction and before final approval34.
  • Residential RV use is restricted outside an approved campground or travel-trailer park; the guest exception allows no more than 72 hours in any 30-day period10.

Sources

  1. St. Lucie County Planning & Development Services (2026 county census)
  2. Development Review Per Application Type, quoted and re-checked
  3. Development Review Per Application Type, quoted and re-checked
  4. Fort Pierce: Fort Pierce Code Sec. 125-196 High density residential zone (R-5) (St. Lucie County), quoted and re-checked
  5. Onsite Sewage FAQ - Permitting, quoted and re-checked
  6. Private Wells, quoted and re-checked
  7. Development Review Per Application Type (2026 county census)
  8. Onsite Sewage Disposal, quoted and re-checked
  9. Florida Statutes § 489.103, Exemptions, quoted and re-checked
  10. St. Lucie County Land Development Code § 7.10.06, Recreational Vehicles; Use as Residence Outside of Approved Camps or Parks Restricted, quoted and re-checked
  11. Private Wells, quoted and re-checked
  12. 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
  13. 61G20-1.001 Florida Building Code Adopted (Florida statewide rule), quoted and re-checked
  14. Elevator Safety – Statutes & Rules, quoted and re-checked
  15. Ordinance 12-003 discussion document, quoted and re-checked
  16. Building Permit Fees, quoted and re-checked
  17. St. Lucie County Planning and Development Services, Permitting/Zoning Division (stlucieco.gov)
  18. Development Review Per Application Type, quoted and re-checked
  19. Future Land Use Element, quoted and re-checked
  20. Future Land Use Element, quoted and re-checked
  21. Towns, Villages and the Countryside Element, quoted and re-checked
  22. St. Lucie County Comprehensive Plan Future Land Use Element, quoted and re-checked
  23. Onsite Sewage Disposal, quoted and re-checked
  24. Onsite Sewage FAQ - Permitting, quoted and re-checked
  25. Onsite Sewage Disposal, quoted and re-checked
  26. Onsite Sewage Disposal, quoted and re-checked
  27. Towns, Villages and the Countryside Element, quoted and re-checked
  28. Development Review Per Application Type, quoted and re-checked
  29. Development Review Per Application Type, quoted and re-checked
  30. Development Review Per Application Type, quoted and re-checked
  31. Private Wells, quoted and re-checked
  32. Development Review Per Application Type, quoted and re-checked
  33. Future Land Use Element, quoted and re-checked
  34. Checklist for Single Family Residence and addition permits, quoted and re-checked
  35. Median property tax bill: Bolthole Index county data
  36. Effective property tax rate: Bolthole Index county data
  37. 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.

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Compared with neighboring counties

Like all 6 of its neighbors, St. Lucie County requires a building permit for a home.

RuleSt. Lucie CountyIndian River CountyOkeechobee CountyMartin CountyHighlands CountyOsceola CountyPalm Beach County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsFL Dept. of Health in St. Lucie CountyFL Dept. of Health in Indian River CountyFL Dept. of Health in Okeechobee CountyFL Dept. of Health in Martin CountyFL Dept. of Health in Highlands CountyFL Dept. of HealthFL Dept. of Health in Palm Beach County

County locator

St. Lucie County in Florida

45
County map
St. Lucie County highlighted among the Florida counties · colored by Index score

How St. Lucie County scores

Seclusion16100% ev.
Self-Sufficiency50100% ev.
Admin Boringness44100% ev.
Durability64100% ev.
Property Autonomy91100% ev.
Carry Cost74100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$373kTypical home
0.9%Property tax
$6,408Land / acre
54.5"Annual rain
7.1% of yrsSevere drought
0.8 / yr (+0.8)Mid-century 100°F days
14.4 daysMid-century dry spell
2.6" (+2.8%)Mid-century 1-day rain
1.01×Wildfire change factor
100%Forward climate coverage
$2,777Home insurance / yr
-3.2% / yrInsurance growth
0.52%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
357,206People within 30 min
7,689,272People within 2 hr
361,853Radius comparison (15 mi)
653.5People / sq mi
0.1%Federal land
99.6%Land at 15% slope or less
0.4%Soils rated "not limited" for septic (strict USDA rating)
1,404 acWorkable land screen
35.4%Wooded land
28.1 tonsBiomass / forest ac
73.8°FAvg temp

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Cities and towns in St. Lucie County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Town of St. Lucie Village

Answers from the rulebook for St. Lucie County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

St. Lucie County rules

  • County-wide zoningPresent

    County zoning and land-development regulation in unincorporated St. Lucie County.

    • The cited county development-review material applies to the unincorporated county area.
    • Specific dimensional and use standards depend on the applicable zoning district, overlay district, and Land Development Code provision.
    “The goal shall be implemented by strictly enforced building, zoning and development codes [...] The following land use designations/intensities, as indicated on the Future Land Use Maps are provided as the pattern for the future development of the area within unincorporated St. Lucie County.”
  • Local zoningPresent

    County-administered zoning in unincorporated St. Lucie County.

    • Incorporated municipalities may administer their own local zoning rules.
    • The county source identifies zoning districts, planned-development districts, overlays, and Land Development Code standards.
    “Zoning District or Future Land Use Map Change [...] Development design standards may be found in Land Development Code Chapter 7 Development Design and Improvement Standards, Chapter 3 Zoning Districts, and Chapter 4 Overlay Districts.”
  • Zoning districtsPublished (with conditions)

    Published zoning-district and future-land-use compatibility material for unincorporated St. Lucie County.

    • The Future Land Use Element states that its land-use designations and intensities provide the pattern for future development within unincorporated St. Lucie County.
    • Zoning districts must be consistent with the Future Land Use designation unless accompanied by a corresponding future land-use map amendment request.
    “The following table shall be used to determine consistency of future land use designations and zoning districts to identify compatible zoning districts.”
    One more reviewed finding on this topic
    • Published — Zoning districts and overlays in unincorporated St. Lucie County.
      “Development design standards may be found in Land Development Code Chapter 7 Development Design and Improvement Standards, Chapter 3 Zoning Districts, and Chapter 4 Overlay Districts.”
  • Living in an RVLimited

    Use of recreational vehicle-type units as residences in unincorporated St. Lucie County.

    • Section 8.02.00 may provide an exception.
    • Residential use is allowed in an approved camping ground or travel trailer park.
    • A recreational vehicle may be temporarily occupied for no more than 72 hours in any 30-day period when its owner or operator is a gratuitous guest of the property owner or occupant.

    temporary guest occupancy: <= 72 hours (within any 30-day period) · guest occupancy period: per 30 days (temporary occupancy not exceeding 72 hours)

    “no recreational vehicle-type unit as defined by Section 320.01(1)(b), Florida Statutes, shall be used as a residence in the unincorporated area of the County”
  • Accessory dwellingsLimited

    Single-family units within the Oak Ridge Ranches Mixed-Use Activity Area in unincorporated St. Lucie County.

    • The Oak Ridge Ranches Mixed-Use Activity Area is limited to properties within the urban service boundary.
    • The site-specific sub-area policy controls where it addresses the issue; otherwise the adopted and effective Comprehensive Plan, Land Development Code, and site-specific Planned Unit Development zoning regulations in effect on the date of final decision control.
    • Single-family units may incorporate ADUs as defined by St. Lucie County Comprehensive Plan Policy 1.1.1.5.
    • ADUs incorporated into a single-family detached dwelling unit are not counted against density totals but must be accounted for in traffic-study impacts and must meet applicable parking-code requirements.
    • If rented, the ADU must be rented at an affordable rate to households not exceeding 120 percent of median annual adjusted gross income.
    • Homeowners Association rules and other private documents may not restrict ADUs if they are designed, permitted, and constructed along with the initial dwelling unit on a lot.
    • ADUs may not be subdivided or sold separately from the primary dwelling units.

    maximum renter household income: <= 120 percent of median annual adjusted gross income

    “Single-family units are allowed to incorporate accessory dwelling units (ADUs) as defined within the St. Lucie County Comprehensive Plan Policy 1.1.1.5.”
    2 more reviewed findings on this topic
    • Limited — Accessory dwelling units within single-family development addressed by the County’s Towns, Villages and Countryside policies.
      “When proposed by an individual lot owner, only verification of potable water and sanitary sewer service shall be required.”
    • Limited — Accessory dwelling units proposed within St. Lucie County Towns, Villages, and applicable TVC neighborhoods.
      “Accessory dwelling units shall be evaluated for concurrency purposes to determine availability of services when proposed as part of a Town or Village.”
  • Who permits septicState (with conditions)

    Onsite sewage treatment and disposal systems in St. Lucie County.

    • The Florida Department of Health page describes the OSTDS program as operating through permitting and inspection.
    • The page directs readers to the Florida Department of Environmental Protection for governing authorities and forms.
    • Florida Department of Health Division of Environmental Public Health fees may be paid in person or online.
    “Permits for OSTDS in these counties are issued by the Environmental Public Health Program of the Florida Department of Health's local county health department.”
    One more reviewed finding on this topic
    • Local — OSTDS permitting in St. Lucie County.
      “St. Lucie [...] Permits for OSTDS in these counties are issued by the Environmental Public Health Program of the Florida Department of Health's local county health department.”
  • Septic permitRequired

    OSTDS permitting in St. Lucie County.

    • Applications should include a soil evaluation by a private site evaluator.
    • Site plans must be to scale and contain required information.
    • Three copies of floor plans and three copies of site plans are submitted.
    • Plans and forms submitted by a licensed engineer must be dated, signed, and sealed.
    • The lot should be cleared before submitting the septic application.
    • Gate codes or property-access information should be provided.
    “Tips for Obtaining a Permit Quickly [...] Submit the application with the soil evaluation”
    2 more reviewed findings on this topic
    • Required — OSTDS permitting for septic systems in St. Lucie County.
      “Submit the application with the soil evaluation, completed by a private site evaluator (list of qualified individuals).”
    • Required — OSTDS construction permitting in St. Lucie County.
      “To apply for a permit, download and complete an Application Form (DEP4015, page 1) and submit it, along with a Site Plan (DEP4015, page 2), a building floor plan and the required application fee to your local county health department. A Site Evaluation (DH4015, page 3) is needed to determine the conditions on your property and must be performed by a qualified professional.”
  • Septic inspectionRequired

    OSTDS inspection and maintenance oversight in St. Lucie County.

    • Owners or contractors with owner authorization may hire a private provider to perform OSTDS inspections since July 1, 2022.
    • The program covers proper design, construction, and maintenance through permitting and inspection.

    private-provider inspection option effective date: 2022-07-01 (owners or contractors with owner authorization)

    “The OSTDS program ensures that the systems is properly designed, constructed, and maintained through permitting and inspection [...] Since July 1, 2022, owners or contractors with owner authorization have the option to hire a private provider to perform inspections of OSTDS.”
  • Well permitRequired

    Water-well construction, repair, and abandonment in St. Lucie County.

    • The program is delegated from the South Florida Water Management District.
    • Requirements are detailed in Chapters 62-532 and 40E-3, Florida Administrative Code.
    “The program is delegated from South Florida Water management to be responsible for permitting ALL wells in this county.”
    2 more reviewed findings on this topic
    • Required — All wells in St. Lucie County.
      “The program is delegated from South Florida Water management to be responsible for permitting ALL wells in this county.”
    • Required — All water wells in St. Lucie County.
      “The program is delegated from South Florida Water management to be responsible for permitting ALL wells in this county. The Florida Department of Health in St. Lucie County permits, inspects, and investigates complaints regarding proper construction and abandonments of water wells as detailed in Chapters 62-532 and 40E-3, Florida Administrative Code.”
  • Mandatory utility hookupConditional

    Residential Estate future-land-use areas in unincorporated St. Lucie County.

    • Central utilities are not required for the cited Residential Estate designation.
    • Service connections should be provided when at all practical.
    “The RE designation is intended for large lot, single-family detached residential dwellings, at a density of one unit per gross acre. These areas are not required to be served with central utilities, however when at all practical, service connections should be provided.”
  • Subdividing landRegulated (with conditions)

    Subdivision and development review under the County Land Development Code.

    • A preliminary record plat with property-owner or homeowners-association documents is listed for all subdivisions.
    • The checklist states that additional standards and requirements may be identified during pre-application or development review.
    “Preliminary record plat with POA or HOA documents”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision of land under the St. Lucie County Land Development Code.
      “Preliminary record plat with POA or HOA documents LDC 11.03.02 (all subdivisions) [...] This list is not intended to be inclusive of all requirements but is to assist you in providing an application in compliance with the County’s Land Development Code. Additional standards and requirements may be identified at the pre-application meeting or throughout the development review process.”
  • Building in a floodplainRequired

    New construction, reconstruction, or additions within identified 100-year flood zones in unincorporated St. Lucie County.

    • The requirement applies to all new construction, reconstruction, or additions to existing facilities, regardless of type, that are permitted within identified 100-year flood zones.
    • The applicable County Flood Damage Protection regulations must be followed.

    flood-zone threshold: 100-year flood zones

    “Enforce the County's Land Development Code, which require that all new construction, reconstruction or additions to existing facilities, regardless of type, that is permitted within the identified 100 year flood zones is subject to the County's Flood Damage Protection regulations.”
    One more reviewed finding on this topic
    • Limited — Residential construction in a Special Flood Hazard Area in unincorporated St. Lucie County.
      “Homes located in the Special Flood Hazard Area will be required to submit an Elevation Certificate with Construction Documents, Under Construction, and Prior to Final.”
  • Permit feesPublished

    County building and zoning permit fees published in St. Lucie County’s fee schedule.

    • Plan review fees are non-refundable unless no staff review was performed.
    • The minimum plan review fee is $75.00.
    • Residential permits include one inspection trip; each additional inspection/trip, if required, is $75.00.
    • Private-provider reductions do not apply to surcharge, trust, or BIMS fees.
    • The schedule states it was amended by Resolution #2024-53, among other listed amendments.

    minimum plan review fee: 75 USD · additional inspection/trip: 75 USD (Each additional inspection/trip if required.) · single-family residence contractor fee: 250 USD · single-family residence owner/builder fee: 350 USD · zoning verification fee: 25 USD · flood zone verification letter: 25 USD

    “All plans examination fees are NON-REFUNDABLE unless there was no review performed by staff. Minimum Plan Review Fee is $75.00.”
  • Permit processPublished (with conditions)

    Development permitting and zoning-compliance procedures in unincorporated St. Lucie County.

    • Development is not authorized without first obtaining all necessary Development Permits.
    • A Certificate of Zoning Compliance is required before issuance of an occupational license or Development Permit required by the section.
    • The Planning and Development Services Director determines whether an application complies with the County Code and Comprehensive Plan.
    • If compliance depends on conditions or exceptions, those conditions or exceptions are included in the Certificate of Zoning Compliance.
    • If the application does not comply, it is returned with a written statement identifying the noncompliant provisions.
    • The cited ordinance states that it takes effect upon filing with the Florida Department of State.
    “No erection, alteration, construction, reconstruction or any type of development within the unincorporated areas of St. Lucie County involving a building, structure, paved parking area, driveway connection, or impact upon a protected natural habitat, is authorized without first obtaining all necessary Development Permits in accordance with the provisions of this Section.”
    2 more reviewed findings on this topic
    • Published (with conditions) — County development-review applications in unincorporated St. Lucie County.
      “Applications will not be accepted for review until the minimum required submittal items are provided. [...] Upon receipt of the required items, your application will be transmitted to the Development Review Committee.”
    • Published (with conditions) — County development-review applications in unincorporated St. Lucie County.
      “Applications will not be accepted for review”
  • Building permitRequired

    Per Florida Building Code 102.2 as administered by St. Lucie County, a permit is required for construction, erection, alteration, repair and use/occupancy of buildings in unincorporated St. Lucie County.

    St. Lucie County Planning & Development Services ↗Scouted from the county site, not yet independently re-checked

Florida rules that apply here

  • Owner-builder exemptionAvailable (with conditions)

    Owners acting as their own contractors for farm outbuildings, one-family or two-family residences, and qualifying commercial buildings in Florida, including St. Lucie County, subject to local permitting requirements.

    • The owner must provide direct, onsite supervision of work not performed by licensed contractors.
    • Farm outbuildings and one-family or two-family residences must be for the owner's occupancy or use and not offered for sale or lease.
    • Commercial buildings qualify only when construction cost does not exceed $75,000 and the building is for the owner's occupancy or use and not offered for sale or lease.
    • The owner may not delegate direct supervision except as allowed for a registered or certified person acting within the scope of that person's license.
    • The owner must personally appear and sign the building permit application and satisfy local permitting-agency requirements, unless the statute's solar-project electronic-submission exception applies.
    • The construction must comply with applicable laws, ordinances, building codes, and zoning regulations.
    • Sale or lease within one year creates a statutory presumption that the project was undertaken for sale or lease.
    • For a partially completed project, local permitting-agency approval and a determination that the listed contractor substantially completed the project are required.

    commercial building cost ceiling: <= 75000 USD (owner occupancy or use and not offered for sale or lease) · sale or lease presumption period: <= 1 year (after completion)

    “Owners of property when acting as their own contractor and providing direct, onsite supervision themselves of all work not performed by licensed contractors”
    One more reviewed finding on this topic
    • Conditional — An owner acting as the owner's own contractor for construction, improvement, maintenance, repair, alteration, or addition to a one-family or two-family residence in Florida for the owner's own use and occupancy.
      “one-family or two-family residences on such property for the occupancy or use of such owners and not offered for sale or lease”
  • Building code adoptedAdopted

    The Florida Building Code, 8th Edition (2023), as amended and updated by the Florida Building Commission, as the building code for the State of Florida.

    • The current rule incorporates updates approved through December 9, 2025.
    • Local authorities having jurisdiction may adopt local amendments as permitted by Florida law; those amendments do not replace the statewide base code.
    • The Florida Building Commission website identifies December 31, 2023 as the effective date of the 8th Edition (2023).

    code edition: 8th Edition (2023) (as updated by the Florida Building Commission) · latest listed rule effective date: 2026-03-18 · base code effective date: 2023-12-31

    “The Florida Building Code, 8th Edition (2023), as updated by the Florida Building Commission on June 20, 2023, April 16, 2024, August 13, 2024, December 10, 2024, December 20, 2024, April 15, 2025, and December 9, 2025, and incorporated herein by reference is hereby adopted as the building code for the State of Florida.”
    3 more reviewed findings on this topic
    • Adopted — Florida Building Code applicable statewide, including St. Lucie County.
      “The Florida Building Code was created by the 2000 Florida Legislature to provide uniform regulations through out the state. The code is adopted by rule 61G20-1, Florida Administrative Code, by the Florida Building Commission within the Department of Business and Professional Regulation. The 8th Edition Florida Building Code became effective December 31, 2023.”
    • Adopted — The Florida Building Code for public and private buildings, including residential construction, throughout Florida.
      “The initial adoption of, and any subsequent update or amendment to, the Florida Building Code by the commission is deemed adopted for use statewide without adoptions by local government.”
    • Adopted — The Florida Building Code for public and private buildings and structures, including residential construction, throughout Florida.
      “is deemed adopted for use statewide without adoptions by local government.”
  • InspectionsRequired

    New construction, or repair or restoration that modifies the structural system or structural loading, of a Florida threshold building.

    • The enforcing agency must require a special inspector to perform structural inspections pursuant to a structural inspection plan prepared by the engineer or architect of record.
    • The structural inspection plan must be submitted to and approved by the enforcing agency before issuance of the building permit.
    • The fee owner selects and pays the special inspector, who must be an engineer or architect qualified under the cited statutes.
    • This threshold-building requirement is in addition to minimum inspections required by the Florida Building Code.
    “shall require a special inspector to perform structural inspections on a threshold building”
  • Certificate of occupancyRequired

    Projects using Florida’s private-provider building-code inspection process after completion of required inspections.

    • The applicant must submit a request for a certificate of occupancy or certificate of completion, the private provider’s certificate of compliance, all other government approvals required by law, and outstanding fees.
    • The local building official must issue the certificate or identify incomplete forms or documents within 10 business days, or within 2 business days for a permit relating to a single-family or two-family dwelling.
    • If the official does not provide timely notice of incomplete forms or documents, the request is automatically granted and deemed issued on the next business day; the written certificate must then be provided within 10 days.

    local official response deadline: 10 business days (2 business days for a permit relating to a single-family or two-family dwelling) · automatic issuance timing after missed deadline: next business day · written certificate after automatic issuance: 10 days

    “the local building official shall issue the certificate of occupancy or certificate of completion”
  • Minimum dwelling sizeSpecified

    Habitable attics in residential dwellings governed by the Florida Building Code, Residential, 8th Edition (2023).

    • The cited provision concerns habitable attics and requires compliance with the applicable ceiling-height requirement in Section R305.
    • The occupiable space must be enclosed by the roof assembly above, knee walls if applicable, on the sides, and the floor-ceiling assembly below.

    minimum occupiable floor area: >= 70 square feet

    “The occupiable floor area is not less than 70 square feet, in accordance with Section R304.”
  • Camping on your landLimited

    Temporary camping conducted as a recreational camp regulated under Florida Statutes Chapter 513.

    • The operator must obtain a Florida Department of Health permit before establishing or maintaining the recreational camp.
    • The camp must satisfy statutory and Department of Health requirements and inspection standards.
    • This claim does not resolve camping on private land outside a regulated recreational camp.

    permit renewal: annually · permit fee per space: 3.50-6.50 USD (Until rules setting fees are adopted, the fee is $3.50 per space.) · total permit fee: 50-600 USD (A recreational camp fee is based on an equivalency rate for which two camp occupants equal one space.)

    “recreational camp in this state without first obtaining a permit from the department.”
  • Manufactured homesAllowed (with conditions)

    An off-site-constructed residential dwelling, including a manufactured home constructed in whole or in part off site and treated as real property, in a zoning district where single-family detached dwellings are allowed.

    • The dwelling must be permitted as of right in a district where single-family detached dwellings are allowed.
    • Local governments may apply generally applicable architectural, aesthetic, design, setback, height, or bulk standards only when those standards are applied uniformly to all single-family dwellings in the same district.
    • Compatibility or design standards must be reasonable, may not exclude off-site-constructed residential dwellings, and must apply equally to single-family site-built dwellings.
    • The statute does not authorize occupancy without compliance with applicable building, permitting, installation, health, utility, or other generally applicable requirements.
    “An off-site constructed residential dwelling must be permitted as of right in any zoning district where single-family detached dwellings are allowed.”
    One more reviewed finding on this topic
    • Limited — Occupancy of a manufactured/mobile home installed in Florida.
      “each mobile home shall be issued a certificate of occupancy if the mobile home complies with department rules regarding the installation of mobile homes.”
  • Agricultural exemptionConditional

    Nonresidential farm buildings, farm fences, and farm signs located on lands used for bona fide agricultural purposes in Florida.

    • The land must be used for bona fide agricultural purposes.
    • The exemption does not apply to lands used for urban agriculture.
    • The exemption is from the Florida Building Code and county or municipal code or fee.
    • Floodplain-management code provisions remain applicable, including local, state, or federal provisions.
    • A farm sign on a public road remains subject to the standards listed in Florida Statutes § 479.11(4), (5)(a), and (6)-(8).
    • A nonresidential farm building is not intended to be used as a residential dwelling.
    • The statutory definition includes temporary or permanent buildings or support structures used primarily for agricultural purposes and located on land integral to a farm operation or classified as agricultural land under § 193.461; examples include a barn, greenhouse, shade house, farm office, storage building, or poultry house.
    “any nonresidential farm building [...] is exempt from the Florida Building Code and any county or municipal code or fee”
    2 more reviewed findings on this topic
    • Available (with conditions) — Nonresidential farm buildings, farm fences, and farm signs located on lands used for bona fide agricultural purposes statewide in Florida.
      “any nonresidential farm building, farm fence, or farm sign [...] is exempt from the Florida Building Code and any county or municipal code or fee”
    • Available (with conditions) — Nonresidential farm buildings, farm fences, and farm signs located on lands used for bona fide agricultural purposes in Florida.
      “any nonresidential farm building, farm fence, or farm sign [...] is exempt [...] except for code provisions implementing local, state, or federal floodplain management regulations.”
  • Short-term rentalsLimited

    Vacation rentals in Florida.

    • A local law, ordinance, or regulation may not prohibit vacation rentals or regulate their duration or frequency.
    • The preemption does not apply to local laws, ordinances, or regulations adopted on or before June 1, 2011.
    • The preemption does not apply to a local law, ordinance, or regulation exclusively relating to property valuation as a criterion for vacation rental when approval by the state land planning agency is required under an area of critical state concern designation.
    • Local governments retain authority to inspect public lodging establishments for Florida Building Code and Florida Fire Prevention Code compliance.

    grandfather date: June 1, 2011 (local law, ordinance, or regulation adopted on or before this date)

    “A local law, ordinance, or regulation may not prohibit vacation rentals or regulate the duration or frequency of rental of vacation rentals. This paragraph does not apply to any local law, ordinance, or regulation adopted on or before June 1, 2011.”
  • Campground & park staysAllowed (with conditions)

    Occupancy of recreational vehicles as transient accommodations in Florida recreational vehicle parks and recreational camps regulated by Chapter 513.

    • The park or camp must obtain a permit from the Florida Department of Health before establishment or operation.
    • The permit must be renewed annually.
    • This claim does not establish statewide private-land zoning permission outside regulated parks or camps.

    park/camp permit renewal: annually

    “a recreational vehicle park that rents to transient guests”
  • county zoning authorityGeneral

    Florida counties' authority to establish, coordinate, and enforce zoning, including zoning of unincorporated county areas, subject to general and special law.

    • The county power is subject to general or special law.
    • The zoning and business regulations may not include the prohibitions in Florida Statutes § 377.8161.
    • This statewide authority grant does not identify a population threshold, named-county limitation, lake, military-base, reservoir, or similar geographic limitation.
    “Establish, coordinate, and enforce zoning and such business regulations as are necessary for the protection of the public”
    One more reviewed finding on this topic
    • General — Florida counties adopting and enforcing zoning regulations for county territory, including unincorporated areas.
      “Establish, coordinate, and enforce zoning and such business regulations as are necessary for the protection of the public, to the extent such zoning and business regulations do not include the prohibitions in s. 377.8161.”
  • county building authorityGeneral

    Florida counties requiring building permits and enforcing the Florida Building Code for residential and other construction within county territory outside incorporated municipalities.

    • The board of county commissioners may enforce the Florida Building Code and Florida Fire Prevention Code and may adopt local technical amendments at its discretion.
    • The authority described in § 125.56(1) applies within county territory outside the corporate limits of any municipality.
    • After adoption of the applicable code or amendment, construction, erection, alteration, repair, securing, or demolition requires a permit from the appropriate county authority, subject to reasonable fees.
    • An adopted amendment remains in force throughout the county's unincorporated area until otherwise notified by the Florida Building Commission or State Fire Marshal.
    • A county may provide a schedule of reasonable inspection fees and employ building-code inspectors and other necessary personnel.
    “The board of county commissioners of each of the several counties of the state may enforce the Florida Building Code and the Florida Fire Prevention Code as provided in ss. 553.80, 633.206, and 633.208 and, at its discretion, adopt local technical amendments to the Florida Building Code as provided in s. 553.73(4) and local technical amendments to the Florida Fire Prevention Code as provided in s. 633.202 to provide for the safe construction, erection, alteration, repair, securing, and demolition of any building within its territory outside the corporate limits of any municipality.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Minimum lot size — Minimum lot size in unincorporated St. Lucie County.
  • Setbacks — Building setbacks in unincorporated St. Lucie County.
  • Lot coverage — Lot coverage in unincorporated St. Lucie County.
  • Building height — Building height in unincorporated St. Lucie County.
  • Tiny homes — Tiny-home occupancy in unincorporated St. Lucie County.
2 more unanswered
  • Off-grid sanitation
  • Driveway access

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in St. Lucie County, Florida

Is St. Lucie County a good place to live off-grid or homestead?

St. Lucie County scores 45/100 on the Bolthole Index, a marginal county profile. Its strengths: a stronger property-autonomy legal backdrop and manageable long-term carry cost. Watch-outs: about 357,206 people within a 30-minute drive.

Do you need a building permit in St. Lucie County, Florida?

St. Lucie County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Florida Department of Health in St. Lucie County (OSTDS). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in St. Lucie County?

Living in an RV on your own land in St. Lucie County is limited to specific cases: Use of recreational vehicle-type units as residences in unincorporated St. Lucie County. Section 8.02.00 may provide an exception. Residential use is allowed in an approved camping ground or travel trailer park. Confirm with the county before relying on it.

How much does land cost in St. Lucie County, Florida?

Land in St. Lucie County runs about $6,408 per acre, based on the latest county data.

What is the water situation in St. Lucie County?

St. Lucie County gets about 54.5" of rain a year, with severe drought in roughly 7.1% of years.

How remote is St. Lucie County?

A representative private-land location has about 357,206 people within a 30-minute drive and 7,689,272 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How St. Lucie compares in Florida

Compare side-by-side →See all 67 Florida counties ranked →