Deck Cost Calculator
Last updated: October 15, 2026
Estimate deck materials, labor, railing, permits and contingency from planned deck area.
Starting figures illustrate this model. Enter your own measurements, quoted costs and applicable terms; this page does not retrieve live prices or provider rates.
Estimated deck project cost
—
- Decking and framing materials: —
- Estimated labor: —
- Railing cost: —
- Estimated cost per square foot: —
On this page
Quick summary: Estimate deck materials, labor, railing, permits and contingency from planned deck area.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Estimate deck materials, labor, railing, permits and contingency from planned deck area.
How to use it
Enter Deck area (square feet); Decking and framing per square foot ($); Labor per square foot ($); Railing length (linear feet); Railing cost per linear foot ($); Permit and design costs ($); Contingency (%). Select Calculate to update the results.
How the calculation works
The estimate multiplies deck area by material and labor rates, adds railing and permits, then applies a contingency percentage.
Worked example: starting scenario
| Deck area (square feet) | 300 |
|---|---|
| Decking and framing per square foot ($) | 18 |
| Labor per square foot ($) | 20 |
| Railing length (linear feet) | 45 |
| Railing cost per linear foot ($) | 65 |
| Permit and design costs ($) | 500 |
| Contingency (%) | 10 |
| Estimated deck project cost | $16,307.50 |
|---|---|
| Decking and framing materials | $5,400.00 |
| Estimated labor | $6,000.00 |
| Railing cost | $2,925.00 |
| Estimated cost per square foot | $54.36 |
Important limitations
Footings, height, stairs, demolition, site access, engineering, material choice and local code can materially change cost.