Table of Contents
How much does a 14×20 deck cost?
New Deck Installation Cost The average homeowner spends $2,200 to build a 10×10 foot deck, $6,160 to build a 14×20 deck, and $8,800 to build a 20×20 deck. The cost to build a deck with pressure-treated wood, hardwood, or composite is about $25 per square foot, for both materials and installation.
What is the code for deck posts?
Beams and girders must be made from laminated two-by-fours, two-by-sixes or two-by-twelves rather than solid lumber, and deck joists can’t cantilever more than 24 inches beyond a support beam or girder. All vertical support posts must be made from six-by-sixes, and posts can be no taller than 14 feet.
What do I need to build a deck?
Deck Construction
- The foundation and 4 x 4 posts.
- 2 x 10 beams.
- 2 x 4 diagonal bracing.
- 2 x 8 framing and joists.
- 5/4-inch decking.
- Stairs.
- Railings.
How much does it cost to build a raised deck?
Raised Deck Cost At $45 to $50 per square foot, a small 10 x 12-foot second-story deck made from pressure-treated lumber costs $5,400 to $6,000. Increase the size to 16 x 20 feet, and the price soars to between $14,400 and $16,000.
Does a deck have to have a ledger board?
Yes, the deck needs to be tied to the house. You will want to install a ledge board that’s lag bolted to the structure of the house. That means through the brick/sheathing and into the rim joist. And, of course, you should use the appropriate metal hanger to tie the joists of the deck to the ledger board.
How much would it cost to build a 12×12 deck?
A 12 x12 deck can range in cost from $2 200 to $13 000, but the average will be $6 000. Costing $40 a square foot but can be as little as $15 or as high as $85, depending on the deck’s features. A pressure treated deck is the most economical, with composite being the more expansive option.
What should I know before building a raised deck?
Check with your local building department to determine your local code requirements when building a raised platform. If your deck calls for concrete piers or footings set in the ground, call 811 before you dig. Your local utility company will mark the location of any water, gas and power lines in your yard.
Do you need a permit to build an elevated deck?
In many areas, an elevated deck is defined as one that is higher than inches above the ground and is attached to the house. Raised decks require a railing around the perimeter, and they require a building permit. Elevated deck plans also include the use of a ledger board in their design.
How do you measure a deck footing plan?
Using Decks.com footing layout plans and (2) 50’ cloth tape measures, you can measure the specific dimensions from each of these endpoints to the centers of each footing. You now know the three lengths of the sides of a triangle.
How big of a post do you need for a deck?
If an area has marshy or sandy soil, massive footings may be required. For most decks, 4×4 lumber is strong enough for structural posts. If a deck is raised more than 6 feet above the ground, codes may require 6×6 posts. The farther a deck beam must span—that is, the farther apart the posts are—the more massive a beam must be.