Building a deck transforms outdoor space into something you'll actually use — but the price tag can surprise homeowners who haven't done their research. Deck cost, materials, and labor vary widely depending on size, materials, and who does the work. Here's a clear breakdown so you know what to budget before the first board goes down.
Average Deck Cost Overview
Most homeowners spend between $15 and $35 per square foot for a professionally built deck, all in. That means a standard 300-square-foot deck typically runs $4,500 to $10,500, though premium materials or complex designs can push costs well past $20,000.
The three biggest cost drivers are:
- Deck size and shape — straightforward rectangular decks cost less than multi-level or curved designs
- Material choice — pressure-treated wood sits at the low end; composite and hardwood cost significantly more
- Labor rates in your area — contractor rates range from $25 to $85 per hour depending on location and experience
Material Costs Breakdown
Choosing the right decking material is where most of the deck cost variability lives. Here's how common options compare per square foot of material alone:
Pressure-Treated Lumber: $1–$5/sq ft The most affordable option. It resists rot and insects but requires regular sealing and staining — typically every 2–3 years.
Cedar or Redwood: $3–$7/sq ft Naturally resistant to moisture and insects, with a cleaner aesthetic than pressure-treated wood. Still needs periodic maintenance.
Composite Decking: $4–$12/sq ft Made from wood fiber and plastic, composite decking (brands like Trex or TimberTech) resists fading, splitting, and moisture. Higher upfront cost, lower long-term maintenance.
Hardwood (Ipe, Mahogany): $8–$15/sq ft Extremely durable and beautiful, but installation is labor-intensive and specialty tools are often required. Not a DIY-friendly material.
Don't forget structural materials — joists, beams, posts, and concrete footings — which add another $5–$10 per square foot regardless of what's on top.
Labor Costs: What Contractors Charge
Labor typically accounts for 40–60% of total deck cost. For most mid-size decks, expect to pay:
- $8–$22 per square foot for labor alone
- $500–$1,500 for permits and inspections, which most reputable contractors will pull on your behalf
- $200–$600 for demolition if an old structure needs to come down first
More complex jobs drive up hours fast. A ground-level deck on flat terrain is far simpler than an elevated deck attached to a second story, which requires longer posts, more structural bracing, and often additional inspections.
Always get at least three itemized quotes before hiring. A quote that seems unusually low often means shortcuts on materials or skipping permits — both costly mistakes down the road.
What Affects Your Final Price
Several project-specific factors can shift your budget significantly:
- Deck height — elevated decks need more structural support and safety railings, adding $1,500–$5,000+
- Railing type — basic wood railings cost $15–$30 per linear foot; cable or glass railings run $60–$120+
- Built-in features — benches, planters, and pergolas each add $500–$3,000 depending on complexity
- Site access — tight spaces or steep slopes require more labor time
- Local building codes — some municipalities require specific footings, railing heights, or structural tie-ins
Maintenance Costs Over Time
Upfront deck cost is only part of the story. Factor in ongoing maintenance to understand your real 10-year investment:
- Pressure-treated wood: $300–$700 every 2–3 years for cleaning, sealing, or staining
- Cedar/Redwood: similar maintenance schedule to PT lumber
- Composite: minimal — occasional cleaning with soap and water, no sealing required
- Hardwood: periodic oiling ($200–$400 every 1–2 years) to preserve color and durability
Over a decade, composite decking often costs less than wood once you factor in maintenance time and product costs — even though it's more expensive to install.
How to Find the Right Contractor
Getting the materials right matters, but hiring a skilled, licensed contractor matters just as much. Ask to see proof of insurance, references from recent deck projects, and a written contract that specifies materials, timeline, and payment schedule.
Mercoly makes it easy to compare and find trusted deck and patio construction providers in one place, so you're not starting from scratch with every Google search.
Once you have your budget mapped out and your shortlist of contractors ready, you're in a strong position to move forward with confidence — and end up with a deck that holds up for decades.
Ready to get started? Use Mercoly to connect with qualified deck contractors in your area today.