How much does pressure-treated decking cost?
How much does pressure-treated decking cost?
$25 – $50 average cost per square foot installed
Pressure-treated deck cost per square foot
Pressure-treated decking costs $25 to $50 per square foot on average, including materials and professional installation. The total cost depends on the deck size, type, and design complexity, the site prep needed, and local labor rates. A pressure-treated deck lasts 10 to 25 years.
| Deck size | Square feet | Average cost installed |
|---|---|---|
| 8' x 10' | 80 | $2,000 – $4,000 |
| 10' x 10' | 100 | $2,500 – $5,000 |
| 10' x 12' | 120 | $3,000 – $6,000 |
| 12' x 12' | 144 | $3,600 – $7,200 |
| 12' x 14' | 168 | $4,200 – $8,400 |
| 12' x 16' | 192 | $4,800 – $9,600 |
| 12' x 18' | 216 | $5,400 – $10,800 |
| 12' x 20' | 240 | $6,000 – $12,000 |
| 14' x 20' | 280 | $7,000 – $14,000 |
| 16' x 16' | 256 | $6,400 – $12,800 |
| 20' x 20' | 400 | $10,000 – $20,000 |
| 20' x 24' | 480 | $12,000 – $24,000 |
| 24' x 24' | 576 | $14,400 – $28,800 |
Pressure-treated deck cost by type
The cost to build a pressure-treated deck depends mainly on the deck type and style. Basic floating or ground-level platform decks cost the least to build, while more complex decks elevated on pillars or with multiple levels cost the most.
| Deck type | Average cost (per square foot)* |
Description |
|---|---|---|
| Ground-level / platform | $25 – $30 | Simple patio-style deck built on footers that extend below the frost line |
| Detached / floating | $20 – $25 | Deck with no footers, railings, or stairs |
| Elevated | $30 – $50 | Raised at least 3' above the ground on footers but shorter than a second-story deck |
| Second-story | $50 – $60 | Raised to the level of the home's second story on pillars and a reinforced foundation |
| Multi-level | $50 – $100 | Deck with two or more connected, elevated areas |
*Including materials and installation labor
Pressure-treated decking cost factors
Labor costs for building a pressure-treated deck range from $15 to $30 per square foot on average, depending on your location and the deck type and design. Labor makes up about 60% of the total project cost, with materials and supplies making up the remaining 40%.
| Factor | Cost per square foot |
|---|---|
| Materials & supplies | $10 – $20 |
| Labor | $15 – $30 |
| Total | $25 – $50 |
The following factors also impact the cost of a pressure-treated deck:
Deck size: Larger decks require more materials and labor, resulting in higher costs.
Design complexity: The deck's shape and layout, accessibility, and extra features like built-in seating impact the cost.
Lumber quality: Premium-grade pressure-treated lumber costs more than standard lumber but typically lasts longer.
Site preparation: Leveling a yard costs $500 to $1,000 for a small deck or up to $5,000 for a large deck.
Deck replacement vs. new installation: Demolishing an old deck and hauling away the debris increases the total cost.
Staining & sealing: Pressure-treated wood resists insects and rot but still requires sealing every 2 to 3 years like other wood types. Staining and sealing a deck costs $1.50 to $4.50 per square foot for labor and materials.
Deck add-ons
When building a new deck, extra features like stairs, lighting, and an awning can enhance the space or make it more accessible. Keep these add-ons and their costs in mind:
Wood deck railings cost $20 to $50 per linear foot. Upgrading to stainless steel railings costs $50 to $250 per linear foot. Railings are not mandatory for ground-level or floating decks, but most city building codes require them for elevated decks.
Deck stairs cost $500 to $2,000, including the concrete landing pad at the base of the staircase.
Outdoor lighting costs $80 to $300 per fixture with installation.
A retractable awning costs $600 to $3,000 for a manual version or $1,000 to $6,000 for a motorized awning, including installation.
Outdoor furniture costs $500 to $1,500 per set.
Pressure-treated decking FAQs
Does a pressure-treated deck add value to a home?
A well-built pressure-treated deck adds value to a home. Many buyers appreciate the extra outdoor living space for relaxation and entertaining. According to the most recent Remodeling Cost vs. Value Report, a new wood deck provides a 66% to 82% return on investment (ROI), depending on your location.
How long does a pressure-treated deck last?
Pressure-treated decking lasts 10 to 25 years on average. The deck's lifespan depends on the local climate, the quality of the materials and installation, and how well the deck is maintained through regular cleaning and sealing.
Does pressure-treated wood need to be sealed?
Yes, pressure-treated decking should be sealed every 2 to 3 years to protect it from moisture, mildew, and UV rays. Pressure treatment protects against rot and insects but does not prevent moisture from seeping into the wood, which can cause deck boards to warp, crack, or splinter.
Getting estimates from deck builders
Follow these tips to find a reputable deck builder near you:
Compare quotes from at least 3 deck contractors. Confirm the quotes feature the same deck size, layout, features, and materials.
Ask to see a portfolio of their recent pressure-treated deck projects.
Read reviews of deck builders on HomeGuide and Google.
Choose a builder who is licensed, insured, and has been in business for 5+ years.
Request references from past clients.
Get a detailed written estimate, contract, and warranty.
Questions to ask deck building companies
Ask deck building contractors these important questions to ensure you hire the best company for the project:
How many years have you been building decks?
Do you have references or a portfolio showcasing your previous deck projects?
Does the estimate include all fees for labor, materials, deliveries, and cleanup?
Are there any potential extra costs not included in the initial estimate?
How long will the project take?
Will the project require a permit? If yes, do you handle obtaining the necessary permits?
How do you handle waste and debris removal?
Do you offer a warranty or guarantee on your workmanship?
Using our proprietary cost database, in-depth research, and collaboration with industry experts, we deliver accurate, up-to-date pricing and insights you can trust, every time.