Overview of Costs
Building a deck can be a costly endeavor, with the average cost to build a 400 sq. ft. deck ranging from $21,200 to $29,200 depending on the material and features. The size of the deck significantly influences the overall cost, with most decks falling between 300 and 400 square feet. Pressure-treated wood is the least expensive deck material, costing $2-4 per square foot.
DIY vs. Contractor
Installing a deck yourself can save about 65% compared to hiring a contractor. For a DIY approach, a basic deck costs around $8-10 per square foot, whereas hiring a contractor is about $25 per square foot. Site conditions, location, and the complexity of deck designs also impact the cost, with simpler designs being less expensive.
Material Costs by Size
Below is a table of the average material costs for different deck sizes:
| Size | Cost |
|---|---|
| 14×20 | < 10×10 deck |
| 250-400 sq. ft. | $5,000-8,000 |
Deck Costs in 2023
As of 2023, the estimated average cost to build a wood deck typically falls within the range of $30 to $50 per square foot, which includes both labor and materials.
Average Cost in Massachusetts
The average cost of a 20×20 deck in Massachusetts ranges from $12,000 to $20,000. Factors such as deck material quality and specific features play a role in the final price.
Material Costs for a 20×20 Deck
For a 20×20 deck, the material costs can range from $2,500 to $4,500, with pressure-treated wood being a common affordable option. Composite deck materials tend to be more expensive initially but offer long-term cost benefits due to their durability.
In general, the overall pricing for building a deck varies based on size, materials, design, features, and whether the work is DIY or done by a contractor, with costs averaging nationally between $4,000 and $11,500.