Deck Building Cost in Missouri (2026)
Deck Building in Missouri runs about 5% below the national average. A typical 320 sq ft project starts around $4,560–$7,600 for pressure-treated wood. Estimate your exact project below.
Missouri runs below the national average on cost, with an affordable cost of living across most of the state.
Reviewed by the AnyCoster Research Team · How we estimate costs
Deck Building Cost Calculator
Adjust the details for an installed-cost range tailored to you.
Length × width of the deck surface. A 16×20 deck is 320 sq ft.
Ballpark estimate for planning — not a quote.
Get your exact price from local deck pros
This is a ballpark — compare up to 3 free, no-obligation quotes from vetted contractors in Missouri.
Deck Building cost in Missouri by material
Installed cost for a typical 320 sq ft project in Missouri.
| Material | Per sq ft | Typical MO project |
|---|---|---|
| Pressure-treated wood | $14.3–$23.8 | $4,560 – $7,600 |
| Cedar / redwood | $23.8–$38.0 | $7,600 – $12,160 |
| Composite (Trex-style) | $28.5–$57.0 | $9,120 – $18,240 |
What affects your Missouri cost
- Decking material and railing style
- Height off the ground and stairs
- Footings, framing and permits
- Built-ins (benches, pergola, lighting)
- Local labor rates
Deck Building in Missouri: local factors that move the price
Climate & weather
Hot, humid summers, cold winters, and a location prone to severe storms and tornadoes make wind resistance and moisture management relevant. Freeze-thaw and heavy rain both stress exterior finishes.
Regional norms in Missouri
Brick and vinyl siding are common, with wind-resistant roofing a practical choice in storm-prone areas.
Best time to schedule
Fall and spring offer the most stable conditions for outdoor projects.
Permits & code
Permit requirements vary by city and county, with structural and electrical work commonly requiring approval.
Missouri deck building — FAQ
How much does deck building cost in Missouri?
In Missouri, a typical 320 sq ft deck building project runs about $4,560–$7,600 for pressure-treated wood, installed. That's about 5% below the national average. Higher-end materials cost more — use the calculator above for your exact size and material.
How much does deck building cost per sq ft in Missouri?
In Missouri, installed deck runs about $14.3–$57.0 per sq ft depending on material (pressure-treated wood $14.3–$23.8, cedar / redwood $23.8–$38.0, composite (trex-style) $28.5–$57.0). That's about 5% below the national average.
Do I need a permit for deck building in Missouri?
Permit requirements vary by city and county, with structural and electrical work commonly requiring approval. Always confirm requirements with your local building department, and factor permit time and inspections into your schedule.
When is the best time to do deck building in Missouri?
Fall and spring offer the most stable conditions for outdoor projects. Hot, humid summers, cold winters, and a location prone to severe storms and tornadoes make wind resistance and moisture management relevant. Freeze-thaw and heavy rain both stress exterior finishes.
How much does it cost to build a deck in 2026?
A typical 320 sq ft deck runs about $5,000–$8,000 in pressure-treated wood, or $10,000–$19,000 in composite, installed. Size, height, railings and material drive the price — use the calculator for a localized estimate.
Is composite decking worth it?
Composite costs roughly 1.5–2× wood up front but eliminates staining/sealing and lasts 25–30+ years, so total cost of ownership is often lower. It's the popular choice for homeowners who don't want annual maintenance.