Custom Built Spas
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Custom Built Spas FAQ

What are your hot tubs made of?

A. My instructions cover building a masonry hot tub or starting with a pre-made shell.

Are these in-ground hot tubs?

A. The can be in-ground, partially in-ground, above ground or in a deck surround.

How big are these hot tubs?

A. There are no size restrictions as what you typically find with portable-type hot tubs.

How much do these hot tubs cost?

A. Cost, like anything else, varies greatly. The range can be from around 4K to as much as 10K. Depends on the size, where you build it and how you outfit your hot tub.

How are these hot tubs heated?

A. Just like portable tubs, they can be heated with electric heaters, natural gas or propane heaters.

Does building these hot tubs require any special skills?

A. My building information books and videos teach you everything you need to know regardless of your skills. Plus, you can always call me or email me with questions or for any help you may need.

Are these hot tubs built just outdoors?

A. No, you can build a hot tub outdoors, indoors, in a basement, anywhere it works for you.

Where can I get all the parts for building a hot tub?

A. Custom Built Spas can supply everything you need, (equipment and special fittings), for your hot tub project delivered right to your door.

Will these hot tubs take value away from my home?

A. In many cases, it will be just the opposite. Permanently installed hot tubs can actually add equity value to your home, unlike portable spas that add no value.

I live in a cold climate area. Will I still be able to build my own hot tub?

A. Absolutely! I outline multiple ways to set your hot tub up for year-round use if choose to do that in any climate of the country.

Can these hot tubs be tiled?

A. Yes, you can do a tile finish, partial tile, and paint finish, or an all spa paint finish.

Will I have to worry about the hot tub walls leaking?

A. Leaks can happen with any type of hot tub. But, if you follow my build process and waterproofing process, exactly as I give instructions for, the chance of leakage is extremely low. Every process and product we use has been field-tested many times over to give you the utmost reliability.

Are these hot tubs covered?

A. Yes, in almost all instances we highly recommend covering your hot tub when not in use. We can provide you with sources for high-quality covers made right in the US and delivered right to your door.

Charlie C. Hailey ID

Charlie C. Hailey ID

Gene was invaluable to our project! From the moment my wife Anne found his website I talked myself...

Joey P. Santa Rosa, CA

Joey P. Santa Rosa, CA

Working with Gene at Custom Built Spas was a great experience! His knowledge and willingness to...



Remember, my Mission is to help you, as my customer, build a beautiful hot tub of your own! I can show you how to build Spas, Hot Tubs, Swim Spas, Plunge Pools, Cocktail Pools or Exercise Pools at incredibly affordable prices! Everything you need to know is outlined in my series of easy-to-follow books and videos that cover a simple, step-by-step process that I’ve developed and refined over the years.

I will teach and help you with everything you need to know about building your own spa, hot tub, or swim spa yourself, regardless of what your DIY skill levels are and at a cost, YOU determine YOU can afford. As my customer, I’ll work with you at your own pace until your project is done and comes to life! For over 25 years now I’ve been helping people just like you, build their own hot tubs, spas, and swim spa projects. So, are you’re ready to let me help you build your project? Then what are you waiting for, let’s do this!

Custom Built Spas