The contractor bids your project for a specific price and that is how much it will cost...in theory. For small, simple projects, you can probably count on this contract to work for you and for your contractor.However, for larger and more complex projects, the final cost is likely to be higher.he contractor bids your project for a specific price and that is how much it will cost...in theory. For small, simple projects, you can probably count on this contract to work for you and for your contractor. However, for larger and more complex projects, the final cost is likely to be higher.
Decks are less expensive than most other home additions. And because decks are so popular, they also make homes more marketable and valuable. Here's a look at what they cost. For basic designs using the least expensive lumber, you can expect to pay from about $6 to $8 per square foot of deck area.Even if you choose top-of-the-line redwood lumber or want a hot tub, material costs are still reasonable, anywhere from $20 to $35 per square foot.ere's a look at what they cost. For basic designs using the least expensive lumber, you can expect to pay from about $6 to $8 per square foot of deck area. Even if you choose top-of-the-line redwood lumber or want a hot tub, material costs are still reasonable, anywhere from $20 to $35 per square foot.
Decking Prices. 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.Here is the average cost of each decking material, broken down by average price range per board: It's important to know what board sizes you'll need to purchase for your deck.n addition to the deck itself, there's also the cost to purchase a permit. You will have to pay a fee for the contractor to acquire the necessary permit and the cost varies from city to city. You may also have see an increase in your homeowners insurance premium because of the new structural addition to your home.