Shed Permits in Martin & St. Lucie County: Size Limits, Wind Rules & How to Get Approved (2026 Guide)
- Endless Life Design
- 2 hours ago
- 9 min read
On the Treasure Coast, a shed is never just a shed. From the ranchettes of Palm City to the canal-veined blocks of Port St. Lucie, that modest backyard structure stands in one of the most storm-exposed building environments in the country — and Martin County and St. Lucie County regulate it accordingly. Most sheds here need a building permit, nearly all of them must be anchored against hurricane winds, and every one of them must respect the setbacks, easements, and lot-coverage rules written into the zoning code. Skip those steps and the shed waits patiently on your property record, resurfacing at the worst moment: a closing, an insurance renewal, a code-enforcement aerial photo. This guide walks through when a shed needs a permit in Martin and St. Lucie County, the size-limit myths, the wind rules, the application itself, and what to do about a shed that was never permitted at all. Prefer to hand the whole thing off? Endless Life Design secures shed permits across the Treasure Coast and South Florida every week. Call (305) 680-3283.
In This Guide
Do You Need a Permit for a Shed on the Treasure Coast?
The Size-Exemption Myth: What Square Footage Really Buys You
County-by-County: Martin County vs. St. Lucie County
Wind Rules for Sheds: Wind-Borne Debris Region vs. the HVHZ
Zoning Setbacks, Easements, and the HOA Layer
How to Apply: Steps, Documents, and the Seven-Day Boundary Survey
Fees, Timelines, and the Hurricane-Season Rush
Unpermitted Sheds and After-the-Fact Permits
The Done-for-You Option: Government Permit Processing by Endless Life Design
Do You Need a Permit for a Shed on the Treasure Coast?
In almost every case, yes. Under the Florida Building Code 8th Edition (2023), constructing, enlarging, or installing a structure requires a building permit unless the work falls under a specific exemption — and a shed is a structure, whether it is built on site, delivered on a trailer, or assembled from a kit in an afternoon. Both Martin County and St. Lucie County treat sheds as regulated accessory structures, which means the permit review checks the same things it checks on a house at smaller scale: where the shed sits on the lot, how it is anchored to the ground, and whether its construction can resist the wind loads the code assigns to your address.
The most persistent misconception is that a prefabricated shed from a big-box store or a shed dealer arrives permit-free because you did not build it. Delivery is not an exemption. A prefab shed placed on your property is an installation, and the jurisdictions here generally want to see how it will be tied down and whether the manufacturer's construction carries the engineering documentation to prove its wind resistance. The second misconception is that a shed without electricity or plumbing escapes review — utilities add trade permits on top, but their absence does not remove the building permit underneath.
The Size-Exemption Myth: What Square Footage Really Buys You
Ask around and someone will tell you sheds under a magic square footage need no permit in Florida. The truth is less convenient: permit exemption thresholds are set jurisdiction by jurisdiction, not statewide. Some Florida jurisdictions exempt small one-story storage sheds below a modest floor-area threshold; others exempt nothing at all; and the threshold that applies in one county — or one city inside that county — can be different a mile away across the boundary line. Before you rely on any number you read online, confirm it in writing with the building department that actually governs your parcel, because the exemption you heard about may belong to a different jurisdiction entirely.
Even where a small shed is exempt from a building permit, it is never exempt from the law. Zoning setbacks, easements, lot-coverage limits, and flood-zone rules still apply, and many jurisdictions still expect small sheds to be anchored against wind. In other words, a building-permit exemption is a narrow procedural break, not permission to place the shed anywhere or leave it sitting loose on blocks. The homeowners who get burned are almost never the ones who asked first — they are the ones who assumed the exemption, placed the shed on a drainage easement, and met code enforcement later.
County-by-County: Martin County vs. St. Lucie County
In Martin County, shed permits for the unincorporated areas — Palm City, Hobe Sound, Jensen Beach, Port Salerno, and the county's stretches of Hutchinson Island — run through the Martin County Building Division on the Accela Citizen Access portal, with zoning review layered on top by the county's Growth Management Department. The City of Stuart runs its own building division and its own portal, and the island towns of Sewall's Point and Jupiter Island administer their own reviews under some of the strictest local standards on the Treasure Coast. The county's accessory-structure zoning rules vary by district, and rural and agricultural parcels play by different rules than platted subdivisions.
In St. Lucie County, the split matters even more. The City of Port St. Lucie — where most of the county's residents live — operates its own building department and publishes its own shed and accessory-structure permit application, while unincorporated St. Lucie County and the City of Fort Pierce each run separate processes. Port St. Lucie's General Development Corporation-era plat is famous for its drainage and utility easements, which shape where a shed may legally sit on thousands of quarter-acre lots. Filing in the wrong system, or assuming county rules cover a city address, costs weeks before review even begins — which is why confirming jurisdiction is always step one. For Miami-Dade, Broward, and Palm Beach shed rules, see our companion South Florida guides linked at the end of this article.
Wind Rules for Sheds: Wind-Borne Debris Region vs. the HVHZ
Here is the geography that decides what your shed must withstand. The High-Velocity Hurricane Zone — the strictest wind regime in the Florida Building Code, where products generally carry a Miami-Dade Notice of Acceptance — covers Miami-Dade and Broward counties only. Martin, St. Lucie, and Palm Beach counties sit outside the HVHZ but squarely within Florida's wind-borne-debris region, where design wind speeds are set by the code's wind maps for each site and exposure, and where openings and structures are expected to be impact-rated or otherwise product-approved for those loads. A shed permitted in Stuart or Port St. Lucie is reviewed against those site-specific wind pressures, not a generic statewide number.
In practice this means anchoring is the heart of a Treasure Coast shed permit. Site-built sheds need engineered foundation and tie-down details; prefab sheds need either a statewide Florida Product Approval or manufacturer engineering demonstrating that the unit, as anchored, meets the design wind speed for your parcel — and a shed rated for a calmer inland market may simply not qualify here. Products carrying a Miami-Dade NOA are commonly accepted because they meet or exceed the requirement. Whatever the paperwork path, the reviewer wants one thing proven: that when a storm arrives, your shed stays a shed and does not become the neighborhood's debris.
Zoning Setbacks, Easements, and the HOA Layer
Even a perfectly engineered shed fails review if it sits in the wrong place. Accessory structures carry their own setback rules — typically measured from rear and side property lines and varying by zoning district, lot type, and shed size — along with lot-coverage limits that cap how much of the parcel all structures together may occupy. Corner lots, waterfront lots, and flood zones each add their own placement wrinkles. None of these numbers are universal: the setback that applies to a half-acre in Palm City is not the setback that applies to a Port St. Lucie quarter-acre, so the site plan must be drawn against your district's actual table.
Easements are the silent shed-killer of the Treasure Coast. Drainage and utility easements run along the rear and sides of an enormous number of platted lots here, and a shed placed inside one can be ordered moved no matter how well it is built — utilities and drainage districts have the right to access that strip. Homeowners associations add a final private layer: many require architectural review board approval of a shed's size, placement, color, and materials, and HOA approval neither replaces nor is replaced by the government permit. The clean sequence is survey first, HOA second, permit third — so no approval contradicts the one before it.
How to Apply: Steps, Documents, and the Seven-Day Boundary Survey
The application itself follows a consistent arc in every Treasure Coast jurisdiction: confirm which government has jurisdiction over your address, prepare a site plan showing the shed's exact position and distances to every property line, assemble the construction documentation — engineered plans for a site-built shed, or the product approval and anchoring details for a prefab — and file through the jurisdiction's permit portal. For projects above Florida's statutory value threshold, a Notice of Commencement must be recorded before the first inspection. Once issued, the permit typically carries at least an anchoring or foundation inspection and a final inspection, and only the final closes the record.
The document that most often decides the schedule is the boundary survey, because the site plan is only as credible as the survey underneath it. A proper survey follows a deliberate seven-day process: the surveyor researches the plat and deed records, visits the site, locates corners and improvements with physical field measurements, processes the data, and delivers a signed-and-sealed drawing the reviewer will accept — and it is the survey that reveals the easements before the shed is ordered rather than after it is delivered. Ordering the survey late is the most common self-inflicted delay in shed permitting. Endless Life Design coordinates the survey, the plans, and the filing so intake happens once. Call (305) 680-3283 to put the package in motion.
Fees, Timelines, and the Hurricane-Season Rush
Shed permit fees on the Treasure Coast are generally calculated from the value of the work under each jurisdiction's adopted fee schedule, with components for plan review, inspections, and state surcharges — and because those schedules are amended periodically and differ between Martin County, Stuart, Port St. Lucie, Fort Pierce, and unincorporated St. Lucie County, the only reliable number is the one on the current schedule for your jurisdiction. Budget for the adjacent costs too: the boundary survey, engineering or product-approval documentation for the shed itself, and any HOA application fee that your community charges on top.
Timelines follow completeness. A clean shed package — jurisdiction confirmed, survey current, anchoring engineered, product approvals attached — is among the faster permits a building department reviews, often moving in days to a few weeks depending on workload. An incomplete one enters the correction-cycle loop, where each round of reviewer comments restarts the clock. Workload matters as well: ahead of and during hurricane season, June 1 through November 30, permit queues swell with roofing, shutter, and generator applications, and shed reviews wait in the same line. Filing complete, and filing early in the year, is the closest thing to a fast lane the system offers.
Unpermitted Sheds and After-the-Fact Permits
Unpermitted sheds rarely stay secret. They appear in aerial imagery that code enforcement and property appraisers review, they surface in the permit search every diligent buyer's agent now runs before closing, and they draw questions from insurance carriers documenting a property after a storm. When one is discovered, the path back to legality is the after-the-fact permit: the jurisdiction reviews the shed as built, commonly at elevated penalty fees, and requires the same demonstrations a new shed would face — anchoring, wind resistance, setbacks, easements — except now the proof must be assembled around a structure that already exists.
Sometimes the shed can be legalized where it stands, with an engineer documenting the anchoring or specifying retrofits an inspector can verify. Sometimes it cannot — a shed inside a drainage easement or over a setback line may need to be relocated before any permit can issue, and a unit with no traceable engineering may need replacement rather than paperwork. The wrong move is waiting for a closing date or a violation notice to force the issue on someone else's schedule. Resolving an unpermitted shed proactively is cheaper, calmer, and keeps every option open, and it is work Endless Life Design handles routinely across the Treasure Coast.
The Done-for-You Option: Government Permit Processing by Endless Life Design
Everything in this guide is work you can do yourself — and work you never have to. Endless Life Design's Government Permit Processing Service, a flat $4,500, is the done-for-you answer: we confirm jurisdiction, coordinate the boundary survey, assemble the engineering or product-approval package, prepare and file the application, answer every reviewer comment, schedule the inspections, and drive the permit to final sign-off while you get status updates instead of homework. We operate the permitting portals across Martin and St. Lucie counties — including Martin County's Accela system, the City of Stuart, Port St. Lucie, and Fort Pierce — as well as Palm Beach, Broward, and Miami-Dade, every business day.
You are also protected by how we do business. Endless Life Design is a licensed Florida general contractor — verify us yourself at myfloridalicense.com — and on residential work we cap the deposit at 10%, in line with Florida's consumer protections. Whether the job is one new shed permitted before delivery, an after-the-fact legalization cleared before a closing, or a full accessory-structure project carried from survey to final inspection, the service is the same: one team, one fee, every portal handled. Call (305) 680-3283 and hand it off today.
Get Your Shed Permit Approved the First Time
A shed permit in Martin or St. Lucie County is only as painful as the process you choose. Confirm the jurisdiction, respect the survey, engineer the anchoring, and file a package so complete it never earns a correction letter — or hand all of it to a team that lives inside these systems every business day. Endless Life Design permits sheds and accessory structures from Stuart, Palm City, and Hobe Sound to Port St. Lucie and Fort Pierce, and across Palm Beach, Broward, and Miami-Dade. Call (305) 680-3283 and turn the shed you want into a permitted, inspected, storm-anchored structure your property record is proud to show.
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