Missouri deck costs are below the national average in 2026, making it one of the more affordable states to build a deck. Expect to pay $17 to $32 per square foot for pressure-treated wood and $32 to $60 per square foot for composite decking. A standard 12×16 deck in Missouri typically costs between $4,500 and $10,500.
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.
Deck costs in Missouri are below the national average in 2026, making it one of the more affordable states to build a deck. Expect to pay $17 to $32 per square foot for pressure-treated wood and $32 to $60 per square foot for composite decking. A standard 12×16 deck in Missouri typically costs between $4,500 and $10,500.
Frequently Asked Questions
How much does a deck cost in Missouri in 2026?
Most Missouri homeowners pay between $4,200 and $11,000 for a new deck in 2026. Kansas City and St. Louis metros run slightly higher than rural Missouri. Lower labor costs make Missouri one of the more affordable states for deck construction.
What decking material works best in Missouri?
Both pressure-treated wood and composite decking perform well in Missouri. Hot humid summers and cold winters make moisture resistance important. Composite requires less maintenance while pressure-treated wood offers a lower upfront cost.
Do I need a permit to build a deck in Missouri?
Permit requirements vary significantly by municipality in Missouri. Kansas City and St. Louis have formal permitting processes while many rural counties have minimal requirements. Always check with your local building department before starting.
When is the best time to build a deck in Missouri?
Spring and fall are the best seasons to build in Missouri. Summer heat and humidity can slow work and affect concrete curing times. Fall builds often benefit from lower contractor demand and quicker scheduling.