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Deck Cost Calculator

Florida deck construction runs $18 to $95 per square foot of decking surface installed, depending on material. A typical 16x12 ft (192 sqft) FL deck with composite decking, 3 stair steps, and 40 LF of railing costs $7,000–$14,000 in 2026. This calculator includes pressure-treated framing, fasteners, and FBC R507-compliant install — covering both attached and freestanding configurations.

Deck cost calculator

FL contractor rates with composite, cedar, and hardwood options. Updates as you type.

Low end
$7,337
Typical
$10,464
High end
$14,378
About $41.4/sqft typical of decking surface (range $29.44–$55.2). Stairs add ~$435. Railing adds ~$2,080.

How to use this calculator

  1. Measure length and width in feet. Standard FL backyard decks run 12x10 to 20x16.
  2. Pick a decking material. Composite (Trex, TimberTech) is the FL default for low-maintenance; pressure-treated pine is the budget pick.
  3. Indicate if the deck is attached to the home or freestanding — attached saves about 8% in labor through a ledger board.
  4. Set the number of stair steps. Typical FL deck: 2–4 steps from ground level.
  5. Set the linear feet of railing. A 12x16 deck typically has ~40 LF (two long sides plus stair railings).
Numbers updated quarterly
Material rates and labor multipliers come from BuildPriced's internal contractor quote dataset and published industry reports. Last reviewed 2026-05-09.

Calculator FAQs

Why is composite so much more expensive than pressure-treated pine?

Material cost is the main driver: composite decking boards run $4–$8 per linear foot retail; PT pine runs $1.20–$2.50. Composite also requires hidden fasteners or proprietary clip systems that add labor cost versus simply screwing PT pine. The lifecycle math usually favors composite for long-term owners — composite lasts 25–30+ years with zero maintenance, while PT pine in FL needs sealing every 2–3 years and typically lasts 15–20 years.

Do I need a permit for a deck in Florida?

Yes, almost always. FL Building Code R507 governs wood deck construction and most counties require a permit for any deck above 30 inches off the ground or over 200 sqft. Permit fees run $150–$400 plus engineering review for elevated decks. Some homeowners skip permits to save the fee — this is a real mistake because unpermitted decks can cause home-sale closings to fail and require expensive after-the-fact permitting.

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