Deck Cost Calculator

Get an instant deck cost estimate based on materials, size, elevation, and optional extras. Compare pricing for pressure-treated wood, redwood, cedar, composite, and PVC.

Your Deck Details

Decking Material

Deck Size (Area)

100 sq ft 300 sq ft 1,000 sq ft

Deck Elevation

Railing Length

0 ft 40 ft 150 ft

Number of Stair Steps

Built-in Seating

None 0 ft 50 ft

Number of Lights / Fixtures

None 0 fixtures 30

Include Pergola / Cover Include old deck removal

Material Price Comparison

Based on your deck dimensions. Click calculate to see comparison.

How Much Does It Cost to Build a Deck in 2026?

Building a new outdoor deck typically costs between $4,500 and $22,000+. The average homeowner pays around $9,000 to $15,000 for a standard 300-square-foot deck built with wood or composite material, including professional installation.

Average Deck Building Cost by Material (Per Square Foot, Installed)

Material	Material & Labor Cost (Per Sq Ft)	Typical Lifespan
Pressure-Treated Wood	$15 - $35	10 - 15 years
Cedar	$25 - $50	15 - 20 years
Redwood	$30 - $65	20 - 25 years
Composite (Trex, etc.)	$30 - $70	25 - 30 years
PVC Decking	$35 - $75	30+ years
Ipe (Brazilian Hardwood)	$45 - $90	40+ years

Major Cost Factors in Deck Construction

Decking Material: The surface boards account for 40% to 60% of the overall material bill. Pressure-treated wood is the cheapest option but needs annual maintenance. Premium composites or hardwoods cost 2 to 3 times more upfront but last much longer with minimal upkeep.

Size and Shape: Decks are measured by square footage. Rectangular, single-level structures are the cheapest to build. Adding custom shapes, multiple levels, octagons, or complex patterns increases framing labor by 30% to 50%.

Elevation and Footings: A ground-level platform is simple to frame. High decks (second story) require heavy-duty columns, bracing, joists, and safety stairs, adding 15% to 60% to framing labor.

Railings and Stairs: Railings are required for any deck over 30 inches off the ground. Materials vary from simple wood balusters to sleek aluminum, cable, or glass panels, costing $20 to $80+ per linear foot.

How We Calculate Your Estimate

Our deck cost calculator applies real-time contractor surveys and building material rates adjusted for 2026. The calculations start with the selected decking material per-square-foot cost and apply the elevation multipliers. Labor costs are calculated as roughly 50% of the material costs. We then compute optional add-ons like railings, stair steps, built-in benches, LED stair lighting, and old deck removal to provide a comprehensive low-to-high estimate range.

Frequently Asked Questions

Is composite decking worth the extra cost? +

For most homeowners, yes. While composite decking (like Trex or TimberTech) costs 60% to 100% more upfront than pressure-treated wood, it requires zero staining, painting, or sealing. Wood decks must be sealed every 1-2 years, costing $500 to $1,500 each time in materials and labor. Composite pays for itself in maintenance savings within 5 to 7 years.

Do I need a building permit to build a deck? +

Yes, in almost all US municipalities, you need a building permit to build a deck if it is attached to the house, larger than 200 square feet, or higher than 30 inches above the ground. Building permits cost between $100 and $500. Check with your local building office or HOA guidelines before buying materials.

How long does it take to build a standard deck? +

A professional 2 to 3 person crew can usually construct a standard 300-square-foot rectangular deck in 3 to 5 days, depending on weather and footing depth. DIY installations typically take 2 to 4 weekends. Excavation, concrete pouring, and curing for structural footings take the first 48 hours.

What is the average ROI of building a deck? +

According to the Remodeling Cost vs. Value Report, building a wood deck typically recovers 60% to 70% of its initial cost at resale. Composite decks recover roughly 55% to 65%. In addition to financial return, decks significantly boost curb appeal and quicken home sales.