How much does it cost to build a deck or porch?

Because building a deck is a large project, it's important to understand all of the expenses you're facing before you move forward with the project. Read this cost guide to learn more about what it takes to build a deck, and get free estimates from the best deck builders near you.

What's in this cost guide?

• What affects the cost of building a deck?
• How much do deck materials cost (and what are my options)?
• How much does labor cost?
• How can I save money on a new deck?
• What are the benefits of adding a deck?
• How do you choose a deck builder?
• Find a deck or porch builder near you

As with most home improvement projects the answer is… it depends. The biggest influence on the cost of your deck will be the size, materials and labor. Design extras also affect the total cost of the project, but you can get a rough idea of what a new deck will cost you if you know those three things. Here's everything you need to consider.

• Square footage: Obviously, the bigger the deck, the more it costs. A large structure takes longer to build and requires more decking, posts, piers, joists, and screws. Some deck contractors charge by the square foot as well, so if your budget is tight, lose some square footage from the design.

• Elevation: How high off the ground will the deck be? Taller decks require stairs and railings. Stairs and railings add complexity – and material costs – to your project.

• Labor: Deck installation contractors either charge by the hour or by the square-foot. Hourly rates include time spent including time spent sourcing materials, job set-up and break-down, etc.

• Demolish an old deck: If there's an existing structure already in place, you'll have to factor some demolition costs into your new deck budget, or simply opt for a refinish. The cost to remove an old deck ranges anywhere from $500 to $2,000.

• Permits: If you're building a new deck, you may need a permit. Your contractor can do this for you (for a fee) or you can apply yourself before the project begins. The average cost of a general building permit starts around $500, but can go much higher. Permitting fees vary from region to region and will depend upon the size and scale and value of the project.

• Design extras: This is where it gets fun. Expensive, but fun. Go crazy. Add a hot tub. Or a pergola. Some garden boxes, a fire put, grilling area, built-in seating – all of it will cost you but remember, you can potentially recoup up to 70% of those costs in home resale value.

Pressure-treated wood is the most common, budget-friendly decking material. Hardwood and composite materials are for those with a higher price point. Here's a breakdown of material options and their national average cost:

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On average, nationally, contractors will charge $30 to $35 per square foot. The cost for labor will be about two-thirds of your total budget. Deck installation professionals charge either by the hour or by the square-foot. Labor priced per square-foot is fairly straightforward.

Typically, building a new deck takes two to three weeks. A variety of factors can affect the timeline, mainly related to your yard:

• How accessible is the location? Can the crew reach it easily?
• Is there space near the construction site to store materials?
• Does your yard have steep hills, big trees, or other landscaping challenges?
• Do you have an old deck that needs to be demolished before putting the new deck in?
• How's the weather? Are you building in a season where exceptionally cold, hot or rainy conditions might delay construction?

Besides shaving some square footage off your deck, you can also save money by using budget-friendly materials.

• Railings: Cable railings are much more affordable than wood. They also improve visibility and look very modern.
• Lumber lengths: Using standard dimensions (8', 10', 12' and 16' lengths) eliminates waste… and wasted money.
• Protective coating: Saves money over time, preventing situations that require repairs.

Also think about joining forces with your friends and neighbors. If you're building similar decks at the same time, you could save by purchasing materials in bulk.

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• It's a lot cheaper than an addition. Adding a deck expands your living area at a lower cost per square foot than a structural addition. A basic deck costs about $30 per square foot. Compared to the national average cost for a home addition – up to $200 per square foot – that's a steal.

• It increases your home value. Decks are consistently one of the improvements you can add to your home that will increase its value. Some homeowners will recoup 60-70% of their investment, when they choose to sell.

• You get to enjoy it. Maybe even a hot tub too.

To find potential builders for your deck, look online. Compare highly rated deck builders side by side, and read the reviews. 

When reading the reviews, pay attention to customers' comments regarding the builders' craftsmanship. Inspect photos of decks the pros have build recently so you can judge their quality of work. 

Once you've found three or five potential deck builders, message them to get a free estimate. Give the deck builders information about your project, including:

• Your existing design plans (or if you need help with the design)
• The materials you want
• The scope of the work 
• How soon you need the beck built

Also, ask the builders a few questions, such as:

• Do you have references?
• What licenses or credentials do you have?
• How long have you been in business?
• How long would it take to build a deck?
• Can you help me with the design?

In the end, choose a builder who's offering a fair, competitive price and has a strong reputation for building beautiful, sturdy decks.