Miami-Dade County, FL: Owner-Builder Allowed

Unincorporated Miami-Dade County, Florida requires a building permit to build, enlarge, alter, repair, move or demolish a structure, and some permit-exempt work still needs zoning approval¹². County zoning governs unincorporated land, while cities such as Doral and Biscayne Park issue their own building permits and set their own zoning³⁴⁵. Septic permits for every address in the county come from the Florida Department of Health in Miami-Dade County, and county DERM reviews new and total-replacement systems⁶.

At a glance

Building permit: Required in unincorporated areas for construction, alteration, repair, moving and demolition; cities issue their own inside city limits¹²⁷
Zoning: County zoning applies in unincorporated areas; cities administer their own zoning³⁷
Septic permit: The local state health department permits and inspects; DERM reviews new and total-replacement systems, and conventional Type 1 systems are not allowed for them⁶
Owner-builder exemption: Available conditionally; the owner pulls permits and signs a responsibility acknowledgment⁸
Lot dimensions: Minimum lot size, setbacks, lot coverage and height all depend on the parcel's zoning district⁹¹⁰¹¹¹²¹³
Private well: Health department approval is required to drill and install a potable well where public water is unavailable¹⁴
Federal & conservation land: About 57% of the county is federal land, mostly Everglades and Big Cypress conservation land¹⁵
Property tax: About 0.8% effective rate; median bill around $3,516/year¹⁶¹⁷

Who to call

Building permits

Miami-Dade Regulatory and Economic Resources (RER) - Herbert S. Saffir Permitting and Inspection Center

Reviews and issues building permits for construction, remodeling and repair in unincorporated Miami-Dade County under the Florida Building Code

786-315-2000

11805 SW 26 Street, Miami, FL 33175

Zoning

Miami-Dade RER Development Services Division (Zoning Improvement Permit)

Issues the Zoning Improvement Permit (ZIP) confirming a project complies with the applicable zoning district's land use, height, coverage and setback rules

786-315-2660

11805 SW 26 Street, Miami, FL 33175

Septic permits

Florida Department of Health in Miami-Dade County (Onsite Sewage Tanks and Disposal Systems)

Permits and inspects onsite sewage treatment and disposal systems (septic) in Miami-Dade County under Florida's Clean Waterways Act of 2020

786-654-6620

hrsdoh@flhealth.gov

Online permits →

Also useful

Miami-Dade Division of Environmental Resources Management (DERM), Water and Wastewater Section

Reviews and approves new and replacement septic systems under county Ordinance No. 22-83, which pushes systems that hadn't obtained a building permit by January 1, 2023 toward advanced treatment standards

305-372-6789

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

Off-grid gear

Going off-grid in Miami-Dade County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in unincorporated Miami-Dade County, Florida?

Unincorporated Miami-Dade County requires a building permit to construct, enlarge, alter, repair, move or demolish a building, to change its occupancy, and to install or replace regulated electrical, gas, mechanical or plumbing systems¹. Painting or wallpapering interior areas, installing a ceiling fan in an existing outlet, portable playground equipment and resurfacing an interior floor do not need a permit¹. Some permit-exempt work may still need a Zoning Improvement Permit, so permit-exempt does not mean approval-free². Miami-Dade County currently reviews work under the 8th Edition Florida Building Code, and permit applications submitted on or after December 31, 2026 must comply with the 9th Edition¹⁸. The county's building-permit process applies only to properties whose folio numbers start with 30, which the county identifies as unincorporated Miami-Dade¹⁹. Inspections are required for new construction, remodeling, renovation and trade work, and must happen before work is covered or concealed; the approved stamped plans and permit card must be on site, and each inspection beyond the initial one and one follow-up carries a fee²⁰²¹. After final inspection approvals the county issues a Certificate of Occupancy²².

Who issues building and zoning permits in Miami-Dade County, and how do you reach them?

Building permits for unincorporated property run through Regulatory and Economic Resources at the Herbert S. Saffir Permitting and Inspection Center, 11805 SW 26 Street, Miami, FL 33175; call 786-315-2000²³. Zoning questions and Zoning Improvement Permits go to RER Development Services at the same address, 786-315-2660²⁴. The county's rules apply to unincorporated Miami-Dade; inside Doral and Biscayne Park, the city issues building permits⁴⁵, and every municipality has its own Building Official¹⁹. Septic permits and wells stay with the health department even inside a city (see the septic section). Building-permit fees vary with the permit type, work, home type, square footage and estimated project value, and other reviewing agencies may add charges²⁵. Residential owners may act as their own general contractor, but the owner must pull the proper permits and sign an owner-builder responsibility acknowledgment before issuance; licensed subcontractors may be hired⁸. The residential route covers a one-family or two-family residence or a farm outbuilding for the owner's own use, the property must be in a person's name rather than a company or trust, and selling or leasing within 24 months creates a presumption that the work violated the exemption²⁶.

Does Miami-Dade County have zoning, and what needs a Zoning Improvement Permit (ZIP)?

Unincorporated Miami-Dade County is regulated by the County's Zoning Code, while each incorporated municipality uses its own officials and regulations³⁷. Doral and Biscayne Park administer their own zoning²⁷²⁸, as do Coral Gables²⁹, Cutler Bay³⁰, Aventura³¹, Bay Harbor Islands³², Bal Harbour³³ and El Portal³⁴. Every unincorporated parcel has a zoning-district classification that controls permitted uses and conditions³⁵. No single countywide number answers the dimensional questions: minimum lot size, setbacks, lot coverage and building height all depend on the parcel's district⁹¹⁰¹¹¹³. Use the county's Land Management map or ask Development Services to identify the district before designing the site³⁶. Eligible owners in single-family districts may build or create an accessory dwelling unit with a site plan, county review and final approval³⁷.

How do septic permits work in Miami-Dade County?

Septic work in Miami-Dade has split oversight, and it does not move to a city when the city handles building permits and zoning³⁸. The Florida Department of Health in Miami-Dade County handles septic permitting and inspection, while county DERM reviews and approves new and total-replacement onsite sewage systems³⁹⁶. Conventional Type 1 systems are not allowed for new and total-replacement systems serving development, residential or commercial³⁹. The county also requires properties served by a septic system to be registered, with existing systems registered by January 1, 2024⁶. The owner may hire a private provider for septic inspections instead of waiting on the health department⁴⁰. Florida requires a site evaluation and the applicable permit to install, replace, repair, modify or abandon an onsite sewage system⁴¹. None of the county's mapped soils are rated without severe limits for a conventional drain field, so expect a site evaluation and an engineered or advanced-treatment system⁴². If a sewer lateral exists within the Water and Sewer Department service area, the property may be required to connect; moving from septic to sewer involves state abandonment approval, county allocation and plumbing approvals, Water and Sewer approval, and connection fees⁴³.

Can you live in an RV, trailer or modular unit on your land in Miami-Dade County?

In Miami-Dade County's mobile home code (Chapter 19A), a recreational vehicle or other motor vehicle used as a dwelling place on the same site for 14 or more continuous days is classed as a "mobile home or motor vehicle used as housing", so a long-term RV stay is treated as housing rather than as camping⁴⁴. Travel trailers used as housing only from November 30 through May 1 are exempt from that chapter⁴⁴. We could not confirm a countywide rule on whether such housing is allowed on a given parcel, or on temporary camping, tiny-home occupancy or minimum dwelling size. Ask Development Services whether the proposed use and structure are allowed in the parcel's zoning district before buying or placing a unit. A temporary trailer or modular building used during construction requires a Zoning Improvement Permit²⁴. Florida's RV-park rules allow transient occupancy in a permitted recreational vehicle park, but they do not establish permission to live in an RV on a private parcel outside a regulated park⁴⁵. A manufactured home needs an onsite installation inspection and a certificate of occupancy after compliance is confirmed, while Miami-Dade retains control over zoning, setbacks and site development⁴⁶. A tiny home must still fit the parcel's permitted use and district-specific dimensional rules⁴⁷.

What are the steps to build on land in Miami-Dade County?

Confirm whether the parcel is unincorporated or inside a municipality, because that determines the building and zoning authority⁷.
Identify the zoning district and verify the use, minimum lot size, setbacks, lot coverage and height before designing the project⁹¹⁰¹¹¹².
Ask Water and Sewer whether the site must connect to an available sewer lateral; if not, begin the health department site evaluation and septic application, then coordinate DERM review⁴³⁴¹⁶.
If public water is unavailable, obtain health department approval before drilling and installing a potable well¹⁴.
Submit the building-permit application to RER and obtain any separate Zoning Improvement Permit the work requires; confirm the plans meet the 8th Edition Florida Building Code, or the 9th for applications on or after December 31, 2026²²⁴¹⁸.
Schedule every inspection listed for the permit before covering or concealing the work, then obtain the Certificate of Occupancy after final inspection approvals²⁰²².

What should you check before buying land in Miami-Dade County, Florida?

Verify the parcel's jurisdiction and zoning district first; a Miami-Dade mailing address does not tell you whether county or municipal rules apply⁷. Confirm the allowed use and all parcel-specific dimensions before relying on a listing description⁴⁷⁹. Ask Water and Sewer about connection availability and price septic only after the required site evaluation, because none of the county's mapped soils are rated without severe conventional-drain-field limits⁴³⁴¹⁴². Confirm potable-water service or the approvals needed for a private well¹⁴. Also investigate floodplain requirements directly with the county before closing, because a complete parcel-level flood-development rule could not be confirmed. Carry realistic costs: the typical home-insurance premium is about $7,089 per year, while the effective property-tax rate is about 0.8% and the median tax bill is about $3,516 per year⁴⁸¹⁶¹⁷.

Watch-outs

Owner-builders still need the proper permits and must sign a responsibility acknowledgment before permit issuance⁸.
A temporary trailer or modular unit used during construction needs a Zoning Improvement Permit, so obtain zoning approval before placing it²⁴.
Conventional Type 1 septic systems are not allowed for new and total-replacement systems serving development in Miami-Dade County⁶.
A short-term vacation rental in unincorporated Miami-Dade County needs a Certificate of Use that must be renewed annually⁴⁹.
Living in an RV on the same Miami-Dade County site for 14 or more continuous days makes it a "mobile home or motor vehicle used as housing" under the county's mobile home chapter, so confirm with Development Services before parking one on a parcel⁴⁴²⁴.

Sources

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.

Compared with neighboring counties

Like all 6 of its neighbors, Miami-Dade County requires a building permit for a home.

Rule	Miami-Dade County	Broward County	Collier County	Palm Beach County	Monroe County	Hendry County	Martin County
Building permit	Required	Required	Required	Required	Required	Required	Required
County zoning	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Septic permits	FL Dept. of Health in Miami-Dade County	FL Dept. of Health in Broward County	FL Dept. of Health in Collier County	FL Dept. of Health in Palm Beach County	FL Dept. of Health in Monroe County	FL Dept. of Health in Hendry County	FL Dept. of Health in Martin County

How Miami-Dade County scores

Seclusion13100% ev.

Self-Sufficiency3291% ev.

Admin Boringness3990% ev.

Durability70100% ev.

Property Autonomy91100% ev.

Carry Cost39100% ev.

Evidence strength: 96%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$523kTypical home

0.8%Property tax

$50,161Land / acre

57.5"Annual rain

5.9% of yrsSevere drought

0.6 / yr (+0.6)Mid-century 100°F days

15.1 daysMid-century dry spell

2.68" (+2%)Mid-century 1-day rain

1.01×Wildfire change factor

100%Forward climate coverage

$7,089Home insurance / yr

0.7% / yrInsurance growth

0.33%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

166,520People within 30 min

5,938,019People within 2 hr

1,705,458Radius comparison (15 mi)

1,414.2People / sq mi

57%Federal land

99.1%Land at 15% slope or less

0%Soils rated "not limited" for septic (strict USDA rating)

0 acWorkable land screen

76.3°FAvg temp

Answers from the rulebook for Miami-Dade County

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

Miami-Dade County rules

Building permitRequired
New structures, building changes, repairs, and demolitions in unincorporated Miami-Dade County.
- Some projects may be exempt from a building permit but may require a Zoning Improvement Permit.
- Incorporated municipalities administer permits within their city limits.
“A building permit is required to build a new structure, make changes, repairs, and/or demolish a building.”
Homeowners General Permit Information ↗Re-checked Sep 25, 2026
One more reviewed finding on this topic
- Required — Construction, enlargement, alteration, repair, moving, demolition, occupancy changes, and regulated electrical, gas, mechanical, or plumbing work in unincorporated Miami-Dade County.
  “Any owner, authorized agent or contractor who desires to construct, enlarge, alter, repair, move, demolish or change the occupancy or occupant content of a building or structure, or any outside area being used as part of the building's designated occupancy (single or mixed) or to erect, install, enlarge, alter, repair, remove, convert or replace any electrical, gas, mechanical or plumbing system, the installation of which is regulated by the technical codes, or to cause any such work to be done, must first submit an application and obtain the required permit for the work.”
  How to Apply for Permits ↗Re-checked Oct 5, 2026
Owner-builder exemptionConditional
Owner-builder permits for residential and limited commercial work.
- Residential work is limited to a one-family or two-family residence or farm outbuilding for the owner's own use or occupancy.
- The property must be in a person's name, not a company or trust.
- Commercial work is limited to a one-story building or addition of not more than 500 square feet, or maintenance/repairs not exceeding $5,000.
- Sale or lease within 24 months creates a presumption that the work was performed for sale or lease and violates the exemption.
- Owner-builder validation is required; failed validation requires a licensed contractor.
commercial addition maximum: <= 500 square feet · commercial maintenance or repair maximum: <= 5000 USD · sale or lease presumption period: 24 months
“For residential properties, you may build or improve a one-family or two-family residence or a farm outbuilding. The building or residence must be for your own use or occupancy.”
Owner-Builder Permits ↗Re-checked Oct 5, 2026
One more reviewed finding on this topic
- Available (with conditions) — Residential property owners acting as their own general contractor for permitted work.
  “In Miami-Dade County, homeowners may be considered owner/builders – meaning, you may act as your own general contractor”
  Homeowners General Permit Information ↗Re-checked Sep 25, 2026
Building code adoptedAdopted (with conditions)
Building-code review administered by Miami-Dade County.
- The county page states it is currently using the 8th Edition Florida Building Code.
- The 9th Edition (2026) becomes effective December 31, 2026; permit applications submitted on or after that date must comply with it.
current code edition: 8th Edition Florida Building Code (subject to the stated 2026 transition date)
“Miami-Dade County is currently using the 8th Edition of the Florida Building Code.”
Homeowners General Permit Information ↗Re-checked Sep 25, 2026
One more reviewed finding on this topic
- Adopted (with conditions) — Building-code administration by Miami-Dade County.
  “Miami-Dade County is currently using the 8th Edition of the Florida Building Code.”
  General Permit Information — Applicable Building Codes ↗Re-checked Oct 1, 2026
InspectionsRequired
Work performed under a Miami-Dade County building permit.
- Approved stamped plans and the permit card must be at the construction site.
- A permit holder pays a fee for each additional inspection beyond the initial and one follow-up inspection.
- Private-provider inspections may be used under the county's Professional Certification Program, but special-inspector work is in addition to mandatory department inspections.
“Inspections are required for new construction, remodeling/renovations, and other mechanical, electrical and plumbing work.”
Inspections ↗Re-checked Oct 5, 2026
One more reviewed finding on this topic
- Required — New construction, remodeling, renovation, and applicable trade work in unincorporated Miami-Dade County.
  “Inspections are required for new construction, remodeling/renovations, and other mechanical, electrical and plumbing work.”
  Inspections ↗Re-checked Sep 25, 2026
Certificate of occupancyRequired
New construction, remodeling, renovation, or change of use/occupancy where a Certificate of Occupancy is applicable.
- A Certificate of Completion rather than a Certificate of Occupancy applies to certain standalone fences, windows, similar permits, and shell buildings.
- A temporary CO/TCO may be valid for up to 90 days subject to stated conditions.
“Upon obtaining your permit, and receiving final inspection approvals, you will obtain a Certificate of Occupancy (that allows you to occupy the space).”
Certificate of Occupancy and Certificate of Use ↗Re-checked Oct 5, 2026
County-wide zoningPresent (with conditions)
Land use and development in unincorporated Miami-Dade County.
- The cited county zoning statement is expressly limited to unincorporated Miami-Dade County.
- Incorporated municipalities may administer their own zoning rules.
“The use of property in unincorporated Miami-Dade County is regulated by the County's Zoning Code.”
Miami Dade Zoning ↗Re-checked Oct 1, 2026
One more reviewed finding on this topic
- Present (with conditions) — Use and development of property in unincorporated Miami-Dade County.
  “The use of property in unincorporated Miami-Dade County is regulated by the County's Zoning Code.”
  Miami Dade Zoning ↗Re-checked Oct 5, 2026
Local zoningVaries (with conditions)
The county aggregate of zoning administration across incorporated municipalities and unincorporated Miami-Dade County.
- Incorporated municipalities have their own building and zoning officials and handle zoning and building permitting within their city limits.
- Unincorporated-area zoning and building permitting fall under Miami-Dade County.
- Municipal zoning districts and regulations are maintained separately from the county zoning jurisdiction.
“A polygon feature class of Miami-Dade County Municipal Zoning Districts.”
Centralized Review and Permitting Information Hub ↗Re-checked Oct 1, 2026
Zoning districtsPublished
Published zoning district classifications and related regulations in Miami-Dade County.
- The zoning districts page directs users to the Land Management map for the zoning assigned to a property.
- District-specific conditions include permitted uses, height, area, open space, and setbacks.
“Each property within Miami-Dade County is assigned a zoning district classification indicating the permitted land use activities and the conditions, such as height, area, open space and setbacks, under which those uses are allowed. Use the Land Management map to determine the zoning assigned to a property.”
Zoning Districts ↗Re-checked Oct 5, 2026
One more reviewed finding on this topic
- Published (with conditions) — Zoning-district classifications and associated development parameters in unincorporated Miami-Dade County.
  “Each property within Miami-Dade County is assigned a zoning district classification indicating the permitted land use activities and the conditions”
  Homeowners General Permit Information ↗Re-checked Sep 25, 2026
Minimum lot sizeSpecified
Minimum lot size in unincorporated Miami-Dade County zoning districts.
- The applicable minimum depends on the property's zoning district.
“Information available includes: the zoning of the site, the uses permitted within that zone and development parameters, such as the minimum lot size, the maximum density, the required setbacks from property lines, the maximum lot coverage and floor area ratio, the maximum height, parking and green area requirements.”
Miami Dade Zoning ↗Re-checked Oct 5, 2026
SetbacksSpecified
Development in unincorporated Miami-Dade County zoning districts.
- Setbacks vary by zoning district and property.
- The county directs applicants to use the Land Management map or contact Zoning for the applicable property-specific requirements.
“Each property within Miami-Dade County is assigned a zoning district classification indicating the permitted land use activities and the conditions, such as height, area, open space and setbacks”
Homeowners General Permit Information ↗Re-checked Sep 25, 2026
One more reviewed finding on this topic
- Specified — Setbacks in unincorporated Miami-Dade County zoning districts.
  “Information available includes: the zoning of the site, the uses permitted within that zone and development parameters, such as the minimum lot size, the maximum density, the required setbacks from property lines, the maximum lot coverage and floor area ratio, the maximum height, parking and green area requirements.”
  Miami Dade Zoning ↗Re-checked Oct 5, 2026
Lot coverageSpecified
Lot coverage in unincorporated Miami-Dade County zoning districts.
- Lot coverage depends on the property's zoning district.
“Information available includes: the zoning of the site, the uses permitted within that zone and development parameters, such as the minimum lot size, the maximum density, the required setbacks from property lines, the maximum lot coverage and floor area ratio, the maximum height, parking and green area requirements.”
Miami Dade Zoning ↗Re-checked Oct 5, 2026
Building heightDistrict specific (with conditions)
Development in Miami-Dade County zoning districts, principally in the county zoning jurisdiction.
- Height limits depend on the assigned zoning district and applicable conditions.
- The official zoning page directs users to the Land Management map to determine the zoning assigned to a property.
- Incorporated municipalities may apply their own zoning and height regulations.
“conditions, such as height, area, open space and setbacks, under which those uses are allowed.”
Zoning Districts ↗Re-checked Oct 1, 2026
One more reviewed finding on this topic
- Specified — Building height in unincorporated Miami-Dade County zoning districts.
  “Information available includes: the zoning of the site, the uses permitted within that zone and development parameters, such as the minimum lot size, the maximum density, the required setbacks from property lines, the maximum lot coverage and floor area ratio, the maximum height, parking and green area requirements.”
  Miami Dade Zoning ↗Re-checked Oct 5, 2026
Living in an RVLimited
A recreational vehicle or other motor vehicle used as a dwelling place on the same site for fourteen or more continuous days.
- The code defines a recreational vehicle as a motor vehicle-type unit primarily designed as temporary living quarters for recreational, camping, or travel use.
- A mobile home or motor vehicle used as housing is a unit used as a dwelling place and located on the same site for fourteen (14) or more continuous days.
- Travel trailers used as housing only from November 30 through May 1 are exempt from Chapter 19A.
continuous site occupancy threshold: >= 14 days (Travel trailers used as housing only during November 30th to May 1st are exempt from Chapter 19A.)
“Recreational vehicle: Classed under "motor vehicle," a recreational vehicle-type unit primarily designed as temporary living quarters for recreational, camping or travel use, which either has its own motive power or is mounted on or is drawn by another vehicle. [...] Mobile home or motor vehicle used as housing: A mobile home or motor vehicle used as a dwelling place and located on the same site for fourteen (14) or more continuous days.”
Chapter 19A, Section 19A-2 — Definitions ↗Re-checked Oct 10, 2026
Accessory dwellingsAllowed (with conditions)
Accessory dwelling units in unincorporated Miami-Dade County.
- A site plan showing the ADU is required for zoning and site-specific review.
- Permit application and plans must be submitted for county review and final approval.
- Certificate of Use materials state that ADUs in single-family zoned districts must meet applicable requirements and require an owner disclosure statement.
“Owners of residences located in single-family zoned districts meeting certain requirements can either build out a new unit or remodel part of their home”
Accessory Dwelling Unit (ADU) Blueprint for Homeowners ↗Re-checked Sep 25, 2026
Who permits septicMixed (with conditions)
Onsite sewage treatment and disposal systems in Miami-Dade County.
- The Florida Department of Environmental Protection implements the Florida statutes and regulations applicable to OSTDS.
- The county health department offices continue septic-tank permitting and inspection.
- Miami-Dade County DERM reviews and approves new and total replacement OSTDS.
- Miami-Dade County requires registration of properties served by OSTDS; new or existing systems may be registered from January 1, 2023, and all existing systems must be registered by January 1, 2024.
- Conventional Type 1 septic systems are not allowed for new and total replacement systems serving development in Miami-Dade County.
“The Florida Department of Environmental Protection (DEP) is responsible for implementing [...] county health department offices will continue to do the permitting and inspection for septic tanks”
Onsite Sewage Tanks and Disposal Systems ↗Re-checked Oct 1, 2026
One more reviewed finding on this topic
- Mixed (with conditions) — OSTDS permitting and inspection in Miami-Dade County.
  “The Florida Department of Environmental Protection (DEP) is responsible for implementing Florida Statutes and regulations applicable to OSTDS. Under Florida’s Clean Waterways Act of 2020, the county health department offices will continue to do the permitting and inspection for septic tanks; please continue to work with them for all of your permitting-related needs.”
  Onsite Sewage Tanks and Disposal Systems ↗Re-checked Oct 5, 2026
Septic permitRequired
OSTDS/septic tanks in Miami-Dade County, including new and total replacement systems.
- The county health department offices perform septic permitting.
- Miami-Dade DERM must review and approve new and total replacement OSTDS.
- Conventional Type 1 systems are not allowed for new and total replacement systems serving any development in Miami-Dade County.
- The ordinance applies to residential and commercial developments served by an OSTDS.
“The OSTDS program ensures that the OSTDS is properly designed, constructed, and maintained through permitting and inspection and contributes to safe ground water, which provides 90 percent of Florida’s drinking water.”
Onsite Sewage Tanks and Disposal Systems ↗Re-checked Oct 5, 2026
Septic inspectionRequired
OSTDS/septic tanks in Miami-Dade County.
- County health department offices perform septic inspections.
- Owners or contractors with owner authorization may hire a private provider to perform OSTDS inspections.
“Owners or contractors with owner authorization have the option to hire a private provider to perform inspections of OSTDS.”
Onsite Sewage Tanks and Disposal Systems ↗Re-checked Oct 5, 2026
Well permitRequired
Privately operated potable-water supply systems and wells where public water utilities are unavailable.
- Florida Department of Health approval is required for drilling and installation of the well.
- Environmental plan review may be required.
- Commercial facilities may need a Certificate of Use or municipal occupational license/Certificate of Use.
- The operating permit is generally valid for one year and the permit cycle starts March 15.
“Obtain Florida Department of Health approval for drilling and installation of the well.”
Potable Water Supply Permit ↗Re-checked Oct 1, 2026
Mandatory utility hookupConditional
New construction, changes of use, renovations, and properties within the WASD service area.
- All new construction, changes of use, and most renovations must be evaluated and approved by WASD where applicable.
- Properties within the WASD service area with an existing sewer lateral may be required to connect to WASD sewer facilities.
- Septic properties connecting to sewer require state pump-out and abandon permitting, RER allocation approval, plumbing permitting, WASD approval, and connection fees.
“within the WASD service area, where an existing sewer lateral has been found are required to connect”
First Time Sewer Connection ↗Re-checked Oct 1, 2026
Short-term rentalsLimited
Short-term vacation rentals in unincorporated Miami-Dade County.
- A short-term vacation rental is a dwelling or residence rented to a transient occupant for less than 30 days or one calendar month, whichever is less.
- A Certificate of Use is required and must be reapplied for annually.
rental period threshold: < 30 days (or one calendar month, whichever is less)
“This type of CU may only be obtained online and must be reapplied for annually.”
Certificate of Occupancy and Certificate of Use ↗Re-checked Sep 25, 2026
Permit feesPublished (with conditions)
Miami-Dade County building permits and related agency reviews.
- Fees vary by permit type, work performed, home type, square footage, and estimated project value.
- The revised fee schedule was adopted June 30, 2025 and became effective October 1, 2025.
- Additional fees may be assessed by DTPW, Development Services, DERM, Fire Rescue, WASD, and the State of Florida for septic tanks.
revised fee schedule effective date: 2025-10-01 (adopted June 30, 2025)
“Effective Oct. 1, 2025 the Building Division will be implementing a revised fee schedule adopted by the Board of County Commissioners on June 30, 2025.”
Building Fee Schedules, Refunds & Cancellations ↗Re-checked Sep 25, 2026
Permit processPublished (with conditions)
Building permit application process for properties with folios beginning with 30, identified by the county as unincorporated Miami-Dade County.
- The applicant submits an application and obtains the required permit before covered work.
- Each municipality has its own Building Official for work within city limits.
- Inspections and final approvals are part of the process.
“IMPORTANT: This process is solely for properties with folios that start with “30” (unincorporated Miami-Dade County).”
How to Apply for Permits ↗Re-checked Oct 5, 2026

Florida rules that apply here

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.”
Florida Building Commission Building Codes ↗Re-checked Sep 26, 2026
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.”
Florida Statutes Chapter 513: Mobile Home and Recreational Vehicle Parks ↗Re-checked Sep 9, 2026
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.”
Florida Statutes § 553.385, Zoning of off-site constructed residential dwellings; parity ↗Re-checked Sep 26, 2026
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.”
  Florida Statutes § 320.8285: Onsite inspection ↗Re-checked Sep 9, 2026
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”
Florida Statutes § 604.50, Nonresidential farm buildings; farm fences; farm signs ↗Re-checked Sep 26, 2026
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”
  Florida Statutes § 604.50, Nonresidential farm buildings; farm fences; farm signs ↗Re-checked Sep 26, 2026
- 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.”
  F.S. 604.50 — Nonresidential farm buildings; farm fences; farm signs ↗Re-checked Sep 26, 2026
Subdividing landRegulated (with conditions)
Subdivision and platting of land statewide in Florida, subject to the state minimum requirements and additional local regulation.
- Florida Statutes Chapter 177 establishes minimum platting requirements.
- Local ordinances, laws, or regulations may impose additional provisions or regulations.
- A plat offered for recording must be prepared, signed, and sealed by a professional surveyor and mapper.
- Before approval, the plat must be reviewed for conformity by a professional surveyor and mapper employed by or under contract to the local governing body, with costs borne by the entity offering the plat for recordation.
- A subdivision plat filed for record must contain the required dedication and obtain governing-body approval.
“This part establishes minimum requirements and does not exclude additional provisions or regulations by local ordinance, laws, or regulations.”
Florida Statutes Chapter 177, Land Boundaries ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Regulated (with conditions) — Subdivision of land in Florida through county and municipal land-development regulations and the statutory platting process.
  “Local land development regulations shall contain [...] and shall at a minimum:(a) Regulate the subdivision of land.”
  F.S. 163.3202 — Land development regulations ↗Re-checked Sep 26, 2026
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”
Florida Statutes Chapter 513: Mobile Home and Recreational Vehicle Parks ↗Re-checked Sep 9, 2026
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”
Florida Statutes § 125.01, Powers and duties ↗Re-checked Sep 26, 2026
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.”
  Florida Statutes § 125.01 — Powers and duties ↗Re-checked Sep 26, 2026
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.”
Florida Statutes § 125.56 — Enforcement and amendment of the Florida Building Code ↗Re-checked Sep 26, 2026

Still unanswered

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

Tiny homes — Tiny-home occupancy in Miami-Dade County.
Off-grid sanitation — Off-grid sanitation systems in Miami-Dade County.
Driveway access — Driveway access and driveway permitting.
Building in a floodplain — Development activity within Miami-Dade County floodplains.

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 Miami-Dade County, Florida

Is Miami-Dade County a good place to live off-grid or homestead?

Miami-Dade County scores 35/100 on the Bolthole Index, a marginal county profile. Its strengths: a stronger property-autonomy legal backdrop and 57% federal land exposure. Watch-outs: about 166,520 people within a 30-minute drive and strong self-sufficiency basics: 57.5″/yr rainfall with little drought.

Do you need a building permit in Miami-Dade County, Florida?

Miami-Dade County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Florida Department of Health in Miami-Dade County (OSTDS); county DERM/Water & Wastewater review under Ordinance 22-83. 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 Miami-Dade County?

Living in an RV on your own land in Miami-Dade County is limited to specific cases: A recreational vehicle or other motor vehicle used as a dwelling place on the same site for fourteen or more continuous days. The code defines a recreational vehicle as a motor vehicle-type unit primarily designed as temporary living quarters for recreational, camping, or travel use. A mobile home or motor vehicle used as housing is a unit used as a dwelling place and located on the same site for fourteen (14) or more continuous days. Confirm with the county before relying on it.

How much does land cost in Miami-Dade County, Florida?

Land in Miami-Dade County runs about $50,161 per acre, based on the latest county data.

What is the water situation in Miami-Dade County?

Miami-Dade County gets about 57.5" of rain a year, with severe drought in roughly 5.9% of years.

How remote is Miami-Dade County?

A representative private-land location has about 166,520 people within a 30-minute drive and 5,938,019 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.

Building permits, zoning and septic rules in Miami-Dade County, Florida