How Much Does an In-Ground Hot Tub Cost in 2025?

This article was updated using automation technology and thoroughly reviewed for accuracy by HomeAdvisor Editor Ryan Noonan.

Installing an in-ground hot tub typically costs between $5,000 and $25,000, with an average cost of $15,000. Larger, custom-built units can exceed $35,000, while smaller, prefabricated models might cost as little as $5,000. Key cost factors include the size and type of the hot tub, installation complexity, excavation needs, and materials used. 

On average, you can expect to pay between $50 and $100 per square foot, depending on the features and finishes you choose. Proper budgeting and hiring a professional are crucial to ensure the project is completed safely and efficiently.

What Is an In-Ground Hot Tub?

An in-ground hot tub is a hot tub installed in the ground, similar to an in-ground pool. Homeowners often install them alongside pools for a cohesive design. An in-ground hot tub is a significant investment that offers therapeutic relaxation and entertainment. 

Unlike most above-ground types, in-ground models have permanent features that require professional installation and are difficult and expensive to move once installed. They are often surrounded by stone, wooden decking, or tile or integrated into a patio, with surrounding landscaping to enhance the aesthetic. Properly installed with the help of a professional, an in-ground hot tub can boost your home's curb appeal.

In-Ground Hot Tub Cost Factors

Many factors inform the total cost of your in-ground hot tub installation. This is a breakdown of these cost factors and how they’ll impact your hot tub price.

Size

The size of the hot tub significantly impacts the cost. Larger hot tubs require more materials, excavation, and installation work, increasing the overall expense. For a standard-sized hot tub that accommodates four to six people, expect to pay between $3,500 and $15,000. Custom-built or larger units may exceed $35,000.

Type

There are two main types of in-ground hot tubs: prefabricated and custom-built. Prefabricated shells are less expensive and quicker to install, costing an average of $2,000 to $3,000 less than custom options. However, they may limit aesthetics, shape, occupancy, and design. Custom hot tubs offer unlimited design possibilities but are significantly more expensive and time-consuming to build and install.

Add-Ons

In addition to the standard seat and jet configurations, you may want to consider add-ons that enhance your hot tub's look and functionality. Examples include lighting and covers that can elevate your hot tub experience.

Running Costs

A hot tub’s running costs depend on how often you use it and its size, heat source, and the cost of water and utilities in your area. However, in general, it costs between $30 per month to run a hot tub's electricity.

Maintenance Costs

Regular maintenance is essential to keep your hot tub in good condition and prevent bacteria growth. Many homeowners choose to hire a professional hot tub maintenance company for convenience and safety, spending approximately $500 to $1,000 per year. 

Professionals will check water chemical levels, clean the filter and tub interior, and air out the cover. They can also spot potential issues early, helping you avoid costly repairs and extend the lifespan of your hot tub.

Site Prep

To install your hot tub in the ground, you’ll need to pay for excavation, which will cost around $2,000, depending on the hot tub’s size and location. Preparing the base material and pouring a concrete pad adds another $1,000 to $1,500 to the cost.

Plumbing and Electrical 

To get your hot tub functioning, you must budget for electrical wiring and plumbing. Here’s a breakdown of your costs.

Hiring an electrician costs $50 to $150 per hour, and hiring a plumber costs $45 to $200 per hour. 

Running the wiring and pipework below ground will cost around $2,000. Hooking up the wiring costs, on average, between $600 and $2,200. 

If you need to upgrade your electrical panel, expect to pay an additional $400 to $1,800.

DIY In-Ground Hot Tub Installation vs. Hiring a Pro

Installing an in-ground hot tub is a complex project that requires professional expertise. Excavation, grading, and installing the hot tub shell necessitate heavy machinery and specialized equipment. Additionally, due to safety regulations, electrical, plumbing, and possibly gas work must be performed by licensed professionals. Hiring a local hot tub installation pro ensures your project is completed safely, efficiently, and in compliance with all legal requirements.

How HomeAdvisor Gets Its Cost Data

No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.