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why buy a hot tub?

when you can build one!

How to Build a Hot Tub
Professional Instructions and Incredible Results!

Learn How to Build Your Own Custom Spa or Hot Tub

  • You Get The Ultimate Guide information package for Building Your Own Spa, Hot Tub, Plunge Pool, Cocktail Pool, Swim Spa or Exercise Pool!
  • Includes Six E-Books Packed with Industry Knowledge Plus 2 DIY Bonus Books covering more awesome must have backyard projects that are easy to do! That's a total of 8 books in all! All books are my NEW 2017 revisions with all the latest money saving updates!
  • Package also includes a 2.5 Hour Instructional Video That Walks you Through a Step by Step process for building a Hot tub!
  • Here's the best part! FREE Unlimited Email and Over-the-Phone Consultation from an Industry Expert, - Personal Coaching until your project is complete!

As seen on

Meet the Expert, Gene Trumbull

Custom Built Spas is A Veteran Owned Business established in 1999 by Gene Trumbull. Gene understands the desire and satisfaction fellow DIY (do it yourself) enthusiasts get by being able to construct different kinds of projects by themselves. What he also came to understand was when he was looking into building a hot tub, there was virtually no real quality DIY information available anywhere for doing this type of project. Oh sure you could find a few videos on YouTube with all kinds of crazy ways to construct a spa or hot tub. But most of this stuff quite honestly, produced results you would not be proud to have in your backyard.

In addition, the information you could find, lacked far too many important essential details, critical to someone working to complete a successful spa or hot tub project. Armed with that knowledge, Gene made it his mission and desire to turn building a spa or hot tub into a very doable, high quality DIY project not only for himself, but for others as well. Long story short that was over 17 years ago!

Since then, Gene has become one of the nations recognized leading authorities on spa, hot tub, swim spa, plunge pool, cocktail pool and exercise pool building. He has been interviewed by industry magazines such as Pool & Spa News and articles on his project manuals have been posted on several prominent "handyman" web sites over the last several years, plus he has countless customer completed projects not just in the US but around the world!

Here's what's so unique about what Gene and Custom Built Spas offers to anyone buying his spa, hot tub and swim spa building information package, they can get FREE one on one personalized coaching help on their own project until it’s done! As Gene puts it, “I become your personal spa building Coach!” Think about this, who offers that kind of service these days? Go ahead and read through the rest of site pages and get excited about what you are about to learn.

Learn More About Gene and Custom Built Spas Buy Now

Real Results from our clients

(Directly from Instagram #CustomBuiltSpas)

  • We love this spa built by a customer using our DIY plans! We're ready for snow! Get started on your custom spa today by following the link in our bio!  #spa #hottub #jacuzzi #backyardideas #sauna #sportpool #ideas #diy #projects
  • Check out this spa built by a customer using our DIY plans! Transform your backyard and get started on your custom spa today by following the link in our bio! #mondayvibes #mondaymotivation #spa #hottub #jacuzzi #backyardideas
  • My own hot tub after a complete makeover. Visit and you can see how to build one of your own. This is a great project for any DIYer!
  • Another beautiful diy oasis! This client used our step-by-step instructions to create this beautiful backyard retreat. Head over to to learn more...
  • You can create this beautiful oasis yourself! This is a finished project by one of our customers that followed our step-by-step process. For more information, follow the link in our bio.
  • This beautiful diy oasis was built by one of our amazing customers, using our step-by-step instructions. Create your own oasis by following the link in our bio.
  • Another diy hot tub built by one of our amazing customers. Follow our step-by-step instructions to build your own backyard oasis. Follow the link in our bio for more information.
  • Another amazing diy hot tub built by one of our amazing customers. You can build your own hot tub too!
See More Customer Built Custom Spas

The Latest News

9 August

Hot Tub Designs

No doubt you’ve seen hot tubs before and have seen many different types of hot tub designs. There are hundreds of hot tub manufactures so naturally there will be and equal amount of hot tub designs. However, manufactured hot tubs do have some limitations in their design criteria. One is, the outside length and width […]

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27 June

Hot Tub Makeover

Sometimes things happen that you have no control over and can cause you a lot of grief and aggravation. I’m going to share with you a series of events that I experienced over the last several months that will highlight this and share with you what led to having to do my own hot tub […]

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12 May

Buying a Hot Tub

Some of you reading this article may have already purchased and read one of my do it yourself spa manuals but decided that the project is a little more than you feel comfortable tackling. I understand this and I thank you again for your purchase and at least considering the do it yourself spa. In […]

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