How to Build an In-ground Spa

Lead Image
  • 24-40 hours
  • Intermediate
  • 4,500-9,000
What You'll Need
Spray paint or marking tool
Excavation equipment
Concrete filling
Trenching equipment
Hot tub shell
Pump housing
Plumbing supplies
Decking materials
Hot tub cover

Up to now, you may have been waiting for that visit to a tropical paradise to get into a hot tub. But you don’t necessarily have to wait for a vacation to enjoy some spa time. With a little work, you can have that luxury right in your own backyard. To install your own spa, you’ll need a little help for sure, but by following the steps below, you can enjoy a hot tub in your backyard in just a matter of days.

Step 1 - Mark the Area

Decide on where you are going to put the hot tub and mark out the area. Keep in mind that you will need to allow for easy access to the pump.

Step 2 - Dig the Hole

Dig out a hole using the excavation equipment and then pour the concrete into the pit. Make sure the pit is about 30 inches bigger than the hot tub will be in order to leave room for the pump and motor. Later on, you will build the deck around the edges of the hot tub that will encase the pump.

Step 3 - Set up the Wiring and Plumbing

Use your trenching equipment to run a conduit to install the wiring through the concrete. Set up the placement of the drainage pipes and water access.

Step 4 - Install the Shell

Put the hot tub shell into the concrete pit. Connect all the plumbing and wiring and then construct your deck of choice around the edge of the tub.

Step 5 - Secure the Shell

This step is where you will definitely need the help of a few people. You will need to line up all the holes of the shell with the plumbing and electrical connections and then ensure that all of your connections are properly working.

Once you have your connections set, you’ll need to pour the concrete around the perimeter of the tub in order to secure it. Make sure that you pour the concrete in a downward slope from the edge of the spa so that you will get the appropriate drainage.

Step 6 - Cover Your Tub

Make sure when you’re all done that you get an appropriate cover for the tub. A hot tub cover will be specially designed to keep debris out of it as well as to protect your kids or pets from accidentally falling in.

Take Caution

If you don’t have much experience with wiring and plumbing, it may be best to hire a professional to handle this part of the installation. Also, it is imperative to ensure that the plumbing and electrical connections are properly set up before you pour the concrete as any mistakes may result in having to remove large sections of concrete, which can be very difficult, if not impossible to repair.