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What is the Average Cost of an Inground Hot Tub?

A hot tub can be a luxurious addition to your house that allows you to enjoy warm, circulating water. A hot tub was a large, raised structure that you had to enter. Many homeowners now prefer to install inground hot tubs. In-ground hot tubs are the ultimate luxury. They offer a spa-like experience in an area similar to an inground pool. This cost guide will only focus on in-ground hot tub prices if you are looking to add this amazing feature to your outdoor space.

What is an in-ground hot tub?

This type of hot tub is exactly what it sounds like. It sits in the ground and acts just like an inground pool. In-ground hot tubs often have decking, stone or tile surrounding them to give them a sophisticated, elegant look. An in-ground hot tub is more difficult to move than a regular one. You should choose a location that is suitable for year-round use. Plan to plant some trees around your hot tub to make it more functional.

Types of in-ground hot tubs

There are two options available when you want to install an inground hot tub. These are the options available for above-ground hot tubs. We will examine each in more detail.


Prefabricated hot tubs are the first type. Prefabricated spas can be an economically viable option. Acrylic shells are available for $3,000 to $12,000 and more. For installation, expect an additional cost of $3,000-$5,000.

This hot tub is manufactured in a factory. It is usually made from acrylic, a hard plastic. Another popular prefab option for stainless steel is also available. Prefab hot tubs are only available in certain standard shapes like oval, kidney-shaped, and square. Prefab hot tubs will come with plumbing included. You’ll also receive jets and loungers already installed.

Here are some examples of prefabricated hot tubs that cost less than in-ground units.

  • An acrylic three-person model is available for $3,000 with plumbing included. This price usually includes delivery but not setup or installation.
  • An even larger model for 10 people starts at $5000. This does not include setup or installation.


You also have the option to design your own hot tub. You have many options. A hot tub can be made in any style you like. Most hot tubs have less jets and simple seating arrangements like bench seats. Prefab hot tubs tend to be larger than custom ones.

You can install either of these hot tubs as an inground hot tub. We’ll now take a look at how much an in-ground hot tub costs.

What is the cost of an in-ground hot tub?

In-ground hot tubs will be more expensive than above-ground ones. This is similar to how pricing works for pools. In-ground hot tubs cost between $5,000 and $15,000. Installation costs are $1,000 up to $6,000. Preparing the space for the hot tub is a part of the process. Often, excavation will be required. You will also pay more if you want decking, or any other material around the hot tub (a popular option).

Hot tub costs in-ground

These are the major expenses you will have to pay if you decide to install an inground hot tub.

Heating System

An in-ground hot tub will require a separate heating system. You have options for heating sources such as natural gas, propane, or electric heat. This will affect the cost of your in-ground hot tub. An in-ground hot tub could add 20 to to your monthly electric bill.

Propane is stored in a tank. The tank is usually paid in full after it is filled. However, you should also consider the cost of installing the tank. This could run to $1,000 upfront, which is separate from the installation or hot tub cost.


A reputable contractor should have experience installing in-ground spas. An excellent option is to contact a pool dealer. Ask your contractor or dealer if they offer a guarantee on their work. Hot tub installation costs from $175 to $5,000 depending on the location.

Electrician/Electrical Installation

Cost to wire a hot-tub is $650 to $2,200 . If there’s no electricity running to the area where your hot tub will be installed, it will cost $600 to $3,200 . For details on the type and amount of electricity required for your model, ask your dealer.


No matter where you live, there are many cities and towns that allow permanent structures to be built on their properties. Partly to prevent you from building over septic systems or wells, and partly to ensure safety and happiness for your immediate neighbors. Check with your local council to see if you require a permit for an indoor hot tub. The cost of an in-ground hot tub can go up to $25 to $100.

Concrete Pad

If you are looking to install an in-ground hot bathtub, you will need a concrete pad. A hot tub can weigh as much as 6,000 pounds once it is filled. It’s important that the concrete pad be level. Concrete slabs cost $4-$8 per square foot or $400-$1000.

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