Beautiful grain. Rot-resistant. Medium maintenance.
Low Maintenance
Composite (Trex, etc.)
$35–$65 / sq ft
No staining ever. Looks great long-term. Lasts 30 yrs.
Premium
Tropical Hardwood
$50–$85 / sq ft
Ipe, teak, or mahogany. Extremely durable. High-end look.
Step 3
Where is your deck located?
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Your Personalized Estimate
12×16 Pressure-Treated Deck · Texas
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Pro tip for TexasTexas labor costs are close to the national average. Summer heat can slow framing work — spring and fall builds are often faster and cheaper.
Estimates are for planning purposes only and based on 2025 contractor data. Always get at least 3 quotes before hiring. Prices vary by ZIP code, site conditions, and contractor availability.
18×18 deck costs between $6,480 and $21,060 for most homeowners in 2026, depending on material and location. At 324 square feet, it is a large square deck that provides ample space for full outdoor living including dining, lounging, and entertaining.
Frequently Asked Questions
How much does an 18×18 deck cost in 2026?
An 18×18 deck costs between $6,480 and $11,340 for pressure-treated wood and $11,340 to $21,060 for composite decking. At 324 square feet it is a substantial build that significantly enhances outdoor living space.
What can fit on an 18×18 deck?
An 18×18 deck comfortably fits a large dining table for 8, a full outdoor sofa set, a grill station, and still has room for potted plants and movement. Many homeowners add a pergola or shade structure at this size.
Is an 18×18 a common deck size?
It is less common than 16×16 or 20×20 but a great square option for homeowners who want more space than a 16×16 without going all the way to 400 square feet. The square shape also works well for certain yard configurations.
How long does it take to build an 18×18 deck?
An 18×18 deck typically takes 6 to 10 days for an experienced crew. Permit approval, site preparation, and custom features can extend the timeline.
