Per-square-foot pricing is the single most misleading number in residential decking. Every contractor uses it. Every homeowner asks for it. And every quote you get back has a different definition of what the rate includes. This post is my attempt to put real DFW per-sq-ft numbers in front of you with the caveats spelled out, so you can read three quotes side by side and know which one is actually cheaper.
The headline ranges (DFW, 2026)
Installed, all-in including framing, decking, basic guardrail, and stairs to grade, on a flat lot with no demolition, in USD before state sales tax:
- Pressure-treated: $25–$45 per sq ft
- Cedar: $35–$60 per sq ft
- Capped composite (mid-tier): $50–$80 per sq ft
- Premium composite or PVC: $70–$120 per sq ft
These are the broad bands. Where a specific quote lands inside them depends on six variables that are worth understanding individually.
Variable 1: city
DFW is not a single labour market. The premium-tilted Collin County cities (Plano, Frisco, McKinney) and west Tarrant (Westover Hills, Tanglewood) run 10–15% above the metro average per sq ft. Dallas core and inner Tarrant track the average. Garland, Mesquite, Grand Prairie, and Arlington run 5–10% below the average for equivalent builds. Same deck, same materials, same crew quality — different city = different number.
Variable 2: height above grade
A ground-level deck (under 30″) is the cheapest configuration per sq ft because the framing is simpler, the railing is optional, and footings are simpler. A walkout-height deck (30″ to 48″ off grade) costs 8–15% more per sq ft because of guardrail requirements and slightly heavier framing. A second-storey deck (8 ft+) costs 30–55% more per sq ft because of engineered framing and structural footings.
Most DFW subdivision homes built since 2000 have a walkout off the kitchen, which lands the deck in the 30″–48″ band automatically. That’s the most common DFW build height by a wide margin.
Variable 3: railing material
Railing is the single biggest unmodeled cost driver on most quotes. Per linear foot, installed:
- Wood pickets: $20–$40 / linear ft
- Aluminum: $50–$85 / linear ft
- Cable: $70–$130 / linear ft
- Glass panels: $100–$180 / linear ft
A 14×16 deck with railing on three sides is roughly 44 linear feet of railing. The cost difference between wood pickets and glass panels on that perimeter is $3,500–$6,200 — a swing bigger than the difference between PT and mid-tier composite on the decking itself. When you’re comparing quotes, normalize the railing material first.
Variable 4: stairs
Per-step costs in DFW run $130–$250 installed, including the tread, stringer, and one handrail run. A typical kitchen walkout deck has 3–5 steps to grade. Anything over 6 steps gets proportionally more expensive because of the landing requirement every 12 ft of rise (IRC R311.7).
Variable 5: existing deck demolition
If your job is a rebuild rather than a new build, demolition runs $3–$6 per sq ft for a wood deck with standard disposal (dumpster, hauling, dump fees). On a 224 sq ft deck that’s $670–$1,340 — small but real, and the line most often rolled into a vague "demo and rebuild" lump sum on rebuild quotes. Insist on separating it.
Variable 6: contractor margin and risk-pricing
Every reputable DFW deck builder prices in a margin and a risk-buffer. The margin is typically 12–18% on residential decks. The risk-buffer is variable: a contractor pricing a clean Frisco subdivision walkout has very low uncertainty and prices tight; a contractor pricing an East Dallas pier-and-beam rebuild with unknown rim-joist condition prices a 10–15% contingency into the quote because they can’t see what’s behind the siding until demo. Both are legitimate. The risky job is the one where the contractor doesn’t add a contingency — they’ll change-order you later.
Putting it together: real DFW build totals
For a 14×16 walkout deck with 44 linear ft of railing, 3 steps to grade, in a standard DFW city, installed in 2026:
- PT with wood pickets: $8,400–$12,800
- PT with aluminum railing: $10,200–$14,800
- Mid-tier composite with aluminum railing: $13,200–$18,800
- Premium composite with cable railing: $17,400–$24,200
- PVC with glass panels: $21,500–$30,400
Add a Plano or Frisco premium (10–15%) or a Garland/Mesquite discount (5–10%) depending on your city. Subtract nothing for the time it took you to read this; add about $400–$650 if you need a stamped engineering letter (Plano, Frisco, or any deck over 8 ft above grade in Dallas).
How to use these numbers
When you get three contractor quotes for the same project, the spread should be no wider than 15–20% across the three. If it’s wider than that, one of the three is missing something the other two have priced — usually the permit, the railing upgrade, or the demo. Ask the low-quote contractor what they include in those line items specifically; the answer either reassures you or surfaces the missing piece.
Run your specific build through the calculator for an installed-total range that matches the math in this post.