Deck Cost Calculator
Use this free deck cost calculator to estimate your total project cost. Choose your decking material, enter dimensions, and add options like railings and stairs to get a detailed cost breakdown.
How to Use This Calculator
- 1
Enter deck dimensions
Input the length and width of your planned deck in feet.
- 2
Choose your material
Select from pressure-treated, cedar, composite, or PVC decking.
- 3
Add railings and stairs
Toggle railings and stairs, then specify the number of sides and steps.
- 4
Include labor costs
Choose whether to include professional installation and select a labor rate.
- 5
Review your estimate
See the total cost, material breakdown, and shopping list.
Frequently Asked Questions
A basic pressure-treated wood deck costs $20–30 per square foot (materials + labor). Composite decks run $35–55 per square foot. A typical 16x12 deck costs $4,000–$10,000 depending on materials, options, and region.
Pressure-treated lumber is the most affordable decking material at $2–6 per square foot for boards. It requires regular staining/sealing every 2-3 years but provides good value for budget projects.
Composite decking costs more upfront ($15–22/sq ft for boards) but requires virtually no maintenance and lasts 25-50 years. Over 20 years, composite often costs less than wood when you factor in staining, sealing, and board replacement.
Most localities require a building permit for decks over 200 sq ft or more than 30 inches above grade. Check with your local building department before starting. Permit costs typically range from $100–$500.
A professional crew can build a standard 200 sq ft deck in 1–3 days. DIY builders should plan for 2–4 weekends depending on experience and complexity. Permitting and inspections can add additional time.