AZEK Decking Cost Calculator
Estimate the cost of a AZEK deck — enter your deck size, height and railing to get a low-to-high installed price and the cost per square foot. AZEK PVC decking typically runs $35–$70 per square foot installed.
United States — national average · 2026 prices
Material only unless stated as installed. Excludes tax, permits and local labour. Verify with local suppliers — see how we calculate.
How this calculator works
Every figure above comes from the formula below, applied to the assumptions listed. Nothing is looked up from a hidden table — you can reproduce the result by hand.
Formula
deck area = length × width
decking cost = area × material rate per sq ft × height multiplier
railing = lineal feet of open side × $25–$60 per ft
total = decking + railing, split about 45% materials / 55% labour
Assumptions & limits
- AZEK is costed at $35–$70 per sq ft installed, the highest range of the three brands here.
- AZEK is fully capped PVC rather than a wood composite, so it carries no wood flour — which is why it is lighter and more moisture-resistant, and why it costs more per sq ft.
- PVC expands and contracts more with temperature than composite does, so AZEK's published gapping requirements are stricter and vary with install temperature. Follow the maker's table, not a generic 1/4 in gap.
- Installed rates per sq ft: pressure-treated $15–$25, cedar or redwood $20–$35, composite $30–$60, PVC $35–$70, tropical hardwood $30–$60 (2026 US national ranges).
- Height multiplier is 1.0 ground level, 1.15 raised, 1.30 elevated, covering taller footings, beams, bracing and guard railing.
- Railing length is derived from the number of open sides: two sides = length + width, three = length + 2 × width, four = full perimeter.
- Labour is taken as roughly 55% of the installed figure — so the DIY materials-only line is about 45%.
- Excluded: stairs, built-in benches, lighting, pergolas, multi-level framing, permit fees and any ledger or footing work driven by local code.
Worked example
A 16 × 12 ft ground-level AZEK deck with railing on three open sides
- Area = 16 × 12 = 192 sq ft
- Decking = 192 × $35 to $70 × 1.0 = $6,720 to $13,440
- Railing = 16 + 2 × 12 = 40 lineal ft × $25 to $60 = $1,000 to $2,400
- Total = $7,720 to $15,840
Result:About $7,720 to $15,840 installed in AZEK — roughly $61 per sq ft at the midpoint.
Built and maintained by Christoph Ballmer, Honeygoat GmbH
Method and constants last checked against the calculator code on August 17, 2026. Independent trade review is not yet in place for this calculator — see how we handle review.
Read the site-wide calculation methodology · estimate vs. quote and safety limits
How much does a AZEK deck cost?
AZEK is TimberTech’s premium all-PVC decking. Because it is fully capped polymer rather than a wood-composite, it is the lightest and most stain- and moisture-resistant of the group — and the most expensive per square foot. It is chosen where long life and a high-end finish justify the price.
As an installed all-in figure, AZEK decking typically runs $35–$70 per square foot. On a 320 sq ft deck (16×20 ft) that is roughly $11,000–$22,500, before railing and stairs. The estimate above lets you set your size, height and railing to tighten the range.
cost = area × $35–$70/sq ft (× height) + railing length × rail rate
Building it yourself? Size the boards and hardware with the deck board calculator. Hiring out? Compare quotes from local deck builders below.
Deck cost by decking brand
Compare the installed cost of other decking brands:
Frequently asked questions
How much does a AZEK deck cost?
AZEK PVC decking typically runs $35–$70 per square foot installed. On a 320 sq ft deck (16×20 ft) that is roughly $11,000–$22,500, before railing and stairs. AZEK is TimberTech’s premium all-PVC decking. Enter your own size above for an estimate.
Is AZEK worth the extra cost over wood?
AZEK costs more up front than pressure-treated wood, but it resists rot, fading and stains and needs little upkeep, so it can be cheaper over the deck's life. Whether that trade-off is worth it depends on how long you'll keep the deck and how much maintenance you want to avoid.
Why does AZEK cost more than composite decking?
AZEK is fully capped PVC with no wood flour in the core. That makes it the lightest board of the group, the most resistant to moisture, stains and mold — and the most expensive, at roughly $35–$70 per square foot installed. You are paying for the material class, not a brand premium: PVC simply costs more to make than wood-composite.
Does AZEK expand and contract more than composite?
Yes — PVC moves more with temperature than wood-composite does, so AZEK's installation guide specifies gapping that depends on the temperature at install time. Follow that table rather than a generic quarter-inch rule; boards gapped wrong on a hot day buckle in winter, and that is an installation error, not a warranty case.
Is AZEK decking cheaper than Trex?
No - it runs roughly 15% above capped composite. On a 20 x 20 deck the calculator puts capped composite (Trex, TimberTech) at about $13,500 to $27,600 installed and AZEK PVC at about $15,500 to $31,600, which is $51 against $59 per square foot at the midpoint. The gap is the material class rather than the badge: PVC costs more to manufacture than a wood-polymer composite. Trex also sells several tiers, so a top-tier Trex line and an entry AZEK line overlap.
How much would a 20x20 composite deck cost?
Around $13,500 to $27,600 installed for capped composite - roughly $51 per square foot on 400 square feet, including railing and labour. In AZEK PVC the same deck is about $15,500 to $31,600. For reference on the other end, pressure-treated wood comes in near $7,500 to $13,600. Building it yourself cuts the composite figure to roughly $9,200 in materials, which is the single biggest lever on any deck budget.
When is AZEK worth it over Trex or TimberTech composite?
Where moisture, sun and hold time dominate: pool surrounds, docks, coastal air, and decks you intend to keep for decades. In a normal backyard with a normal budget, capped composite delivers most of the benefit for meaningfully less money — which is exactly the comparison the calculator above lets you run by switching the material.
Do I need a permit to build a deck?
In most US jurisdictions, yes — any deck attached to the house, or a freestanding deck above a certain height or size (often around 30 inches high or 200 square feet), needs a building permit and at least one inspection. Permit fees commonly run $50 to $500, and larger or engineered decks cost more. Building without a required permit can mean fines, a forced rebuild, or trouble when you sell the home, so check with your local building department before you start.