When it comes to pricing the cost of labor to construct a deck, complexity of design and functionality are key factors. The average deck size is 10×12 feet (basic rectangular design), and you can expect to pay $35 per sq. ft. for construction. This price includes excavation and site preparation.
Calculating the Cost of Building Your Deck. When calculating the cost of building a deck, you have to figure in more than just the wood. A deck made from inexpensive materials may not be cost-effective when you include construction and maintenance costs.
Adding stairs to a deck can make your deck more functional and allow access to your yard from the deck. Learn how much it costs to add stair to a deck.
Cost of Decking & Lumber Boards Once you determine what kind of decking materials you'll need to build the structure, it's time to get down to price. While the average cost to build a deck averages between $4,000 and $10,000, that doesn't account for the materials.