How to Build a Raised Deck: A Step-by-Step Guide for Homeowners

how to build a raised deck

Imagine stepping out your back door onto a beautiful new deck where you can enjoy morning coffee, family barbecues, or peaceful evening relaxation.

Building your own raised deck might seem like a big challenge, but with the right guidance, you can make this dream a reality! Learning how to build a raised deck is a project that can transform your outdoor space and add value to your home.

We understand that taking on such a project might feel overwhelming at first. Don't worry! We've broken down this process into simple, manageable steps that anyone can follow.

Whether you're a DIY beginner or have some experience with home projects, this guide will help you create a sturdy, beautiful deck you'll enjoy for years to come.

Planning Your Raised Deck

Before grabbing your hammer, you need a solid plan. Good planning saves time, money, and headaches!

Check Local Building Codes and Get Permits

This step is super important and can't be skipped.

  • Contact your local building department about required permits

  • Ask about specific code requirements for decks in your area

  • Find out if there are height restrictions or setback requirements

  • Get your permits before buying materials

According to the International Residential Code, most areas require permits for decks more than 30 inches above grade.

Design Your Deck

Think about what you want from your new deck.

  • Decide on the size and shape that fits your needs

  • Consider how you'll use the space (dining, lounging, grilling)

  • Think about sun exposure and views

  • Plan for stairs and railings if needed

  • Draw a simple sketch with measurements

Gather Your Materials and Tools

You'll need specific materials for a sturdy deck.

Materials:

  • Pressure-treated lumber for the frame

  • Decking boards (pressure-treated, composite, or cedar)

  • Concrete for footings

  • Galvanized joist hangers and hardware

  • Deck screws (3-inch and 2.5-inch)

  • Railing materials if needed

Tools:

  • Circular saw

  • Drill/driver

  • Level

  • Tape measure

  • Post hole digger or power auger

  • Hammer

  • Speed square

  • String line

How to Build a Raised Deck Attached to House

Many homeowners prefer a deck connected directly to their home. Let's break down the steps.

Step 1: Mark Your Deck Location

Start by mapping out where your deck will go.

  1. Measure and mark the width of your deck on the house wall

  2. Drive stakes into the ground at the outer corners

  3. Run string between stakes to outline the perimeter

  4. Use a carpenter's level to make sure the strings are level

  5. Adjust the height of the strings to match where the top of your deck will be

Step 2: Install the Ledger Board

The ledger board connects your deck to the house.

  1. Mark the height of the ledger board on your house wall (remember to allow for the thickness of your decking)

  2. Remove siding in this area if necessary

  3. Install flashing to prevent water damage

  4. Attach the ledger board to the house using lag screws into the house framing

  5. Make sure the ledger is perfectly level

Step 3: Dig and Pour Footings

Footings support your deck and prevent it from sinking.

  1. Mark footing locations using your plan (typically 6-8 feet apart)

  2. Dig holes below the frost line for your area

  3. Widen the bottom of the holes to create a bell shape

  4. Pour concrete into the holes

  5. Insert post anchors into the wet concrete

  6. Let the concrete cure completely (usually 24-48 hours)

The National Association of Home Builders recommends footings that extend below the frost line in your area to prevent heaving.

Step 4: Install Support Posts

Posts connect your footings to the deck frame.

  1. Cut pressure-treated posts to the correct height

  2. Attach posts to the footings using post bases

  3. Make sure all posts are perfectly plumb using a level

  4. Temporarily brace the posts to keep them straight

Step 5: Add Beams and Joists

The frame supports your decking boards.

  1. Install the main support beam across the tops of your posts

  2. Attach the beam to the posts using proper hardware

  3. Install rim joists around the perimeter

  4. Add inner joists, spaced 16 inches apart

  5. Use joist hangers to attach joists to the ledger board and beam

  6. Double-check that everything is level and square

Step 6: Install Decking Boards

Now for the part you'll actually see and walk on!

  1. Start laying decking boards from the house outward

  2. Leave a 1/8-inch gap between boards for drainage

  3. Use two deck screws at each joist intersection

  4. Cut the ends flush with the outer joists when complete

  5. Sand any rough edges for safety

Consumer Reports suggests using hidden fasteners with composite decking for a cleaner look.

Step 7: Add Railings if Needed

Railings provide safety and style.

  1. Install railing posts at corners and every 6 feet along the perimeter

  2. Attach the top and bottom rails

  3. Add balusters according to local code (typically spaced less than 4 inches apart)

  4. Finish with post caps for a polished look

Step 8: Add Stairs if Needed

Safe stairs are essential for access.

  1. Calculate the number of steps needed (rise divided by 7-7.5 inches)

  2. Install stair stringers

  3. Attach treads to the stringers

  4. Add railing along the stairs

  5. Double-check that stairs meet local code requirements

Additional Tips for Success

Build a deck that lasts with these important tips.

  • Use a water repellent sealer on wood decking

  • Double-check all measurements before cutting

  • Pre-drill holes to prevent splitting

  • Always use galvanized or stainless steel hardware to prevent rust

  • Consider adding lighting for evening enjoyment and safety

The Family Handyman recommends spacing your joists 12 inches apart instead of 16 if you're using composite decking for a sturdier feel.

Conclusion

Building your own raised deck is a rewarding project that enhances your outdoor living space and adds value to your home. By following these steps and taking your time, you can create a beautiful, sturdy deck that will be the envy of the neighborhood.

Remember that safety and proper planning are the keys to success when tackling how to build a raised deck.

We hope this guide has given you the confidence to start planning your deck project! With some patience and these clear steps, you'll soon be enjoying summer barbecues and peaceful mornings on your new deck.

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