The cost of building a 10×20 deck depends on the size of your deck, the material you use and the complexity of the design. A basic 10×20 deck with railing and stairs can be built for around $6,500 to $8,000. However, depending on your budget and needs, you can spend up to $30,000 or more.
The materials used in the construction of a deck vary depending on its size and complexity. Larger decks made with pressure-treated wood or composite materials will cost more than simple ones made from treated lumber. More complicated designs such as arbors or sunrooms will also add to the overall cost of construction.
The average cost for a 10×20-foot wood deck with no railing is about $5 per square foot (psf). This includes pressure-treated wood and only basic features such as railings and stairs.
If you want more elaborate features like an arbor or sunroom added to your 10×20-foot deck, then expect to pay around $7 psf for materials alone (not including labor).
Cost to build 10×20 deck
The cost to build a 10×20 deck depends on the material and labor costs. The average price for a 10×20 deck is about $6,000.
Basic materials for a 10×20 deck include:
Decking boards – These are usually made of pressure-treated lumber or composite materials such as vinyl or plastic.
Railings – You can choose between lattice railings and solid vertical or horizontal rails with balusters.
Stairs – It’s best to build stairs from pressure-treated lumber, but you can also use concrete or composite materials if you want a stronger structure without the risk of rot.
Post anchors – These hold your posts in place when they’re set in concrete.