How to Build an Inground Hot Tub

How to Build an Inground Hot Tub
Written By
Glenda Taylor
Glenda Taylor
Published: Jul 10, 2008
Updated: Nov 20, 2021
2 minute read

In-ground hot tubs are stylish and durable but installation is expensive and requires some knowledge of construction methods.

Things You Will Need

  • Pre-fabricated hot tub shell (or materials to make your own design)
  • Concrete pit
  • Pump house
  • Trenching equipment
  • Wire and plumbing supplies
  • Decking materials.
  1. Locate the area where you want to install your in-ground hot tub. Determine the space by the size of your tub and the installation method you choose. Provisions for access to the pump are imperative when installing an in-ground tub.

  2. Pour a concrete pit at least 30-inches larger than the hot tub to allow access to the motor and pump. If you choose this method, you will place the tub in the pit and build a removable deck around the perimeter.

  3. Trench in electrical wiring and plumbing to your in ground tub. Make provisions before you pour the pit for the installation of the wiring and plumbing. This necessitates running conduit to install wiring through the concrete wall and the placement of water access and drainage pipes. You can skip the water source if you plan to fill your pool with a hose but you will still need a drain and a sump pump to remove the water.

  4. Set the tub; connect the wiring and plumbing and install the decking around the perimeter. Make sure you purchase a self-riming tub and not an out-of-ground tub.

  5. Choose an alternate method of installing an in-ground tub by building a separate pump house away from the hot tub to house the electrical components and pump. This is more common when the homeowner wants an in-ground tub surrounded by concrete or a tub that accesses a swimming pool. This is an expensive method of installation.

  6. Form the tub for the second choice from concrete or gunite and seal or lay tile on the surface. Install the pipes for the jets in the main pour and make provisions for a drain. All of the plumbing and wiring will run to a separate pump house for maintenance. The biggest problem with this system is that should a defect occur in the tubing or wiring, you may have to tear out a portion of the concrete to reach the problem.

  7. Cover your hot tub with a specially designed cover to protect the tub from debris and to protect children or animals from falling in.

The Drip Cap

  • Hot tubs are fabulous places to relax while your muscles revel in a continuous water massage.
  • Locate the area where you want to install your in-ground hot tub.
  • Choose an alternate method of installing an in-ground tub by building a separate pump house away from the hot tub to house the electrical components and pump.
  • This is an expensive method of installation.

Photo Credits

Author image

Author image

Glenda Taylor

Glenda Taylor is a contractor and a full-time writer specializing in construction writing. She also enjoys writing business and finance, food and drink and pet-related articles. Her education includes marketing and a bachelor's degree in…

Sponsored
HomeSteady Logo

HomeSteady is the ultimate guide for all your household needs, from cleaning and HVAC to electrical, DIY and maintenance.

Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved

Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.