Deck Cost Calculator
Estimate the cost of building a new deck. Compare wood, composite, and PVC materials with options for railings, stairs, and professional installation.
How Much Does a Deck Cost to Build?
A new deck costs $15-$75 per square foot depending on materials and complexity. A standard 300 sq ft pressure-treated wood deck costs $4,500-$9,000 for materials and installation. Composite decking runs $8,000-$18,000 for the same size. Higher decks, multiple levels, and built-in features like seating or planters increase costs significantly. The framing and substructure typically account for 30-40% of the total cost regardless of the decking material chosen for the surface.
Deck Material Comparison
Pressure-treated wood is the most affordable option at $2-5 per square foot for materials but requires annual staining and eventual replacement after 10-15 years. Cedar and redwood cost $5-10 per square foot and naturally resist rot but still need periodic maintenance. Composite decking costs $8-15 per square foot but lasts 25-30 years with minimal maintenance and no staining required. PVC decking at $10-18 per square foot offers the highest durability and moisture resistance. Factor in lifetime maintenance costs when comparing since a composite deck that never needs staining may cost less than wood over 20 years.
Deck Building Tips and Considerations
Check local building codes since most areas require permits for decks and have specific requirements for railings, spacing, and structural support. Elevated decks over 30 inches typically require railings by code. Consider the deck orientation for sun exposure and privacy. Ground-level decks are simpler and cheaper to build. Use hidden fastener systems for a clean look with composite materials. Add post caps and lighting for both aesthetics and safety. Plan for adequate ventilation under the deck to prevent moisture buildup. Get at least three contractor quotes and check references before hiring.