Introduction
Adding a backyard shed, storage unit, or small workshop can be a great way to free up space inside your home. In Miami, however, you can’t just drop a pre‑fabricated structure on your property and call it a day. The Miami‑Dade County Building Department and the City of Miami both enforce the Florida Building Code, and a building permit is required for most accessory structures.
This guide walks you through the exact circumstances that trigger a shed permit, the paperwork you’ll need, the fees you’ll pay, and the special considerations for flood‑prone areas. Whether you’re a DIY homeowner or a licensed contractor, the step‑by‑step checklist at the end will help you avoid costly delays.
When Does Miami Require a Shed Permit?
Miami‑Dade County defines a “utility shed or storage structure” as a single‑story, non‑habitable, detached building that is accessory to a single‑family residence, townhouse, duplex, or similar dwelling. The key triggers are:
- Size limit: Only one shed per residential lot and it may not exceed 400 sq ft of floor area (Section 33‑20(k) of the County Code).Utility Shed Permit Requirements
- Use: The structure must be for storage only – no living quarters, sleeping areas, or commercial activities.
- Construction type: Both pre‑manufactured (prefab) and site‑built sheds are covered, but each type has its own documentation requirements.
- Location: The shed must be a detached accessory structure; attached carports or patio covers are covered under separate codes.
If any of the above criteria apply, you must obtain a building permit before breaking ground.
Exemptions – When a Permit Is Not Required
Not every temporary or small structure needs a permit. Miami‑Dade County’s exemption list includes:
- Temporary buildings or sheds used exclusively for construction purposes (requires a Zoning Improvement Permit instead).Permit Exemptions
- Non‑residential farm buildings on farms (requires a Zoning Improvement Permit).
- Removal of an existing shed that does not involve electrical or plumbing work.
- Structures that fall under the Florida Statutes exemption for temporary sheds under 400 sq ft used only during construction.
If your project fits any of these categories, you can skip the building permit but may still need a Zoning Improvement Permit or other agency approvals.
Required Documents and Application Process
Miami‑Dade’s shed permit process is straightforward but detail‑heavy. Below is the complete list of items you must submit with your Building Permit Application (yellow form):
- Completed Building Permit Application – select Category 02 for residential projects.
- Attestation for Utility Shed – a notarized form signed by the property owner. Attestation Form
- Proof of Ownership – recorded deed, closing statement, or recent tax receipt.
- Owner‑Builder Form & Exam (if you are the owner‑builder) – includes a passing score on the county’s owner‑builder exam.
- Detail Drawings:
- For pre‑manufactured sheds – the current Notice of Acceptance (NOA) from the Florida Building Commission or a product approval listing.
- For site‑built sheds – custom drawings signed and sealed by a licensed architect or engineer, showing foundation, walls, roof, doors, windows, and any electrical/plumbing systems.
- Land Survey or Site Plan – must show:
- Shed location and dimensions.
- All setbacks (distance to property lines on each side).
- Distance to the primary residence and other structures.
- Location of water, sewer, well, and electric service.
- Electrical Information (if connecting electricity):
- Conduit size and type.
- Number of wires, insulation type, and circuit details.
- Riser diagram and floor plan showing devices.
- Flood‑Zone Documentation (if applicable):
- Elevation Certificate (for structures in a Special Flood Hazard Area – SFHA) or a completed Flood Opening Form showing required openings.
- Affidavit for Reduced Setbacks (optional): Allows the shed to be placed within 2 ft of an interior or rear property line if the shed is ≤100 sq ft and ≤10 ft tall. Requires notarized signatures from neighboring property owners.Affidavit Form
All documents must be legible and submitted either electronically through the County’s e‑Permitting portal or in person at the Stephen P. Clark Center (111 NW 1st St, 4th Floor, Miami, FL 33128).
Fees – What Will You Pay?
Miami‑Dade’s fee schedule is based on a combination of a minimum fee, a per‑square‑foot “up‑front” processing fee, and a 7.5 % surcharge for code administration. The most relevant fees for a residential shed are:
- Up‑Front Processing Fee: $0.60 per square foot for new residential structures.Fee Schedule (Implementing Order 4‑63)
- Minimum Building Permit Fee: $147.00 for residential permits (applies if the calculated fee is lower).Fee Schedule
- Additional Inspection Fee: $92.48 for each extra inspection beyond the initial and one follow‑up inspection.Fee Schedule
- State‑Mandated Surcharges: 1 % building‑code enforcement surcharge and a 1.5 % surcharge for code administrators (minimum $2 each).Fee Schedule
- Owner‑Builder Up‑Front Fee: $25 non‑refundable fee for the permit support functions if you are filing as an owner‑builder.Utility Shed Permit Requirements
Example calculation for a 200 sq ft prefab shed:
- Up‑front fee: 200 sq ft × $0.60 = $120.00
- Minimum fee applies (since $120