Deck Construction Miami
Deck construction Miami homeowners can build without a permit stops at 18 inches above ground — the county's line, verbatim. Above it, a deck is a framed structure with footings, a ledger, a 40 psf live load, and guards designed to a number.
The deck, and the project it belongs to
Deck construction Miami homeowners commission is structural work — raised, framed, and permitted — whether the deck stands alone or arrives as one piece of a larger permitted job. The second is more common: a deck goes in beside an addition, a remodel, or a new build, on the same permit set. A board swapped or a rail tightened is a repair call.
What a Gaven deck build covers
What it isn't
Where a deck stops being a platform and starts being a structure
Miami-Dade publishes the threshold in plain language, and almost nothing ranking on deck construction in Miami quotes it. Item 08 of the county's permit-exemption list — built on Section 102.2.5 of the Florida Building Code — reads: Wood Decks 18 inches or less above ground do not require a permit. Below that, a platform; above it, a permitted structure.
The height test is necessary and not sufficient: the same list caps exempt work at $5,000 in the aggregate in any 12-month period. Florida House Bill 803 adds a sub-$7,500 path on July 1, 2026, but structural work always requires a permit and flood-hazard properties are excluded, so it barely reaches deck construction.
This is also where deck construction separates from patio work, and the county draws that line itself. Item 08 is decks. Item 06, beside it, exempts open patios, walkways, pavers and other concrete slabs outside the building. A deck is framed and off the ground; a patio bears on soil.Miami-Dade County — Permit Exemptions
Two questions a deck construction quote should answer and usually does not. How far the deck sits from the property line — there is no county-wide number, because setbacks are assigned per zoning district, so any deck builder Miami homeowners call who quotes one figure is guessing. And which building official reviews it: the county counts 35 municipalities, each with its own building official overseeing permits and inspections, and handles buildings in unincorporated areas with folios beginning with “30”.Miami-Dade County — County Municipal Approval
Six phases, one licensed team
Every Gaven project runs the same six phases, in the same order, with one licensed team from first site visit to final inspection. On deck construction, two decide whether the other four matter: permitting, and the framing inspection.
Discovery
A free site visit, no trip fee. We measure the walking surface against grade — the number that decides whether this is permitted deck construction or an exempt platform — and pull the folio, zoning district, and flood zone.
Design and scope
Framing plan, footing layout, ledger detail, guard and stair design, material path. One fixed number with honest variance bands, not a per-square-foot anchor that climbs once guards are required.
Permitting
We file under our license with the right building official — the County for folio-30 properties, the municipality otherwise. Structural review sends plans back on the ledger connection or the guard detail.
Demolition and rough trades
Footings, posts, beams, joists, the ledger. This is the inspection that carries the job: everything above it is finish, everything below it is buried.
Finishes and installation
Decking boards, stair treads, guards, handrails — wood under R317, composite under R507.2. Deck railing installation happens here and is inspected here, as structure rather than accessory.
Punch and closeout
Final inspection, the termite Certificate of Compliance filed with the building department, and a written labor warranty. One walkthrough, one punch list, one team.
The license is the difference
Gaven is a Florida Certified General Contractor. On deck construction that matters at one moment — the permit application — and at every inspection after it. The contractor who files under the license carries the structural work, the inspection sequence, and the closeout paperwork.
It also settles a claim made loosely here. Miami-Dade's Product Control Section approves products used for the protection of the building envelope and mainly addresses windows, exterior glazing, wall cladding, roofing, exterior doors, skylights, glass block, siding and shutters. Deck framing is not on that list, so a contractor telling you your deck needs a Notice of Acceptance is overstating it. The narrower version is true: where deck construction touches the envelope — a roof over it, impact glazing, a proprietary railing system — those components do.Miami-Dade County — Product Approval
Verify it before you sign. Our license is public on the state record, and our permit history is on the public BuildZoom record: 500+ projects since 2015 · 37+ BuildZoom-verified permits.
The general contractor behind the deck
A deck is one scope among many, and most of our deck construction goes in beside a bigger one. The permitting, the structural work, and the inspection sequence behind every Gaven project live on our licensed Miami general contractor.
Deck construction questions
QDo you need a permit to build a deck in Miami-Dade?
It turns on one measurement. Miami-Dade exempts wood decks 18 inches or less above ground; above that, a permit is required. The same list also caps exempt work at $5,000 in the aggregate over any 12-month period, and the deck contractor Miami-Dade permits is the party who files it.
QWhat is the difference between a deck and a patio when it comes to permits?
The county separates them by how they are built, in two adjacent items on the same list. Item 08 is wood decks — framed, off the ground, exempt only at 18 inches or less. Item 06 is concrete slabs, open patios, walkways, and pavers, which bear directly on soil.
QWhat actually causes most deck failures?
The connection, not the boards. The code sets exterior decks at 40 psf, and Table R301.5's footnote e routes attached decks to their own section, R507.1, because the ledger behaves differently from the rest of the frame.
QDoes a deck need a railing, and how high does it have to be?
It needs a guard where the walking surface is more than 30 inches above the grade below — but only if that drop is within 24 inches horizontally of the open edge. Then the guard must be at least 36 inches high, must not pass a 4-inch sphere, and carries a 200-pound load.
QIs composite decking treated the same as wood under the code?
No. Section R317.4 sends composite deck boards, stair treads, guards and handrails to Section R507.2, a separate path from the treated-wood provisions in R317 that govern wood decking.
QDoes a deck need a termite certificate in Florida?
Where termite protection applies, yes — and it is a document, not just a treatment. Section R318.1 requires the licensed pest control company to issue a Certificate of Compliance to the building department.
QHow close to my property line can a deck be?
There is no county-wide answer, and anyone who gives you one is guessing. Setbacks are assigned by zoning district rather than by county. We pull the district during discovery and read what it carries.
QWhat does deck construction cost in Miami?
We do not publish a band, because the number is driven by structure rather than square footage: whether the deck clears 18 inches and needs a permit, how far off grade it sits, whether guards and stairs are triggered, and whether the decking is wood or composite.
QAre you licensed to build decks in Miami-Dade, Broward, and Palm Beach County?
Yes. Gaven is a Florida Certified General Contractor, license CGC1524886, verifiable on the state record at MyFloridaLicense. We pull the deck permit under that license rather than asking the homeowner to file, and insurance certificates issue before any crew is on the property.
Start with the height, then the permit
Every deck construction project starts with a free site visit, no trip fee. We measure the walking surface against grade, pull the folio, zoning district, and flood-zone determination, and tell you which side of the 18-inch line your deck lands on before anyone talks about materials. Then you get one fixed number and one licensed team.
Last updated August 2026.