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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

  • We provide 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)

  • Custom Built Spas can show you how to build your own hot tub, spa, swim spa or plunge pool like the one shown above. #custombuiltspas, #plungpool, #backyardprojects, #homeimprovement, #DIY, #swimspa
  • Custom Built Spas customer Roger N.  Spa/swims spa over looking Mission Beach San Diego CA.#DIYHOTTUB, #homeimprovement, #backyardprojects, #buildyourownspa, #buildyourownhottub, #DIY,  #swimspa, #plungepool
  • Custom Built Spas customer Sebi T built this beautiful DIY Spool, (combination spa/pool) with the Free coaching help provided by Custom Built Spas. #DIYHOTTUB, #spool, #homeimprovement, #backyardprojects, #pool, #DIY, #swimspa.
  • Beautiful night photo of recently completed DIY hot tub by Custom Built Spas customer Vic A. Of Santa Cruz CA. #DIYHOTTUB, #customspa, #buildyourownhottub, #homeimprovement, #backyardprojects, #buildyourownspa, #customspas, #DIY, #plungepool
  • Build your own hot tub with Custom Built Spas DIY spa and hot tub building information package. We give you free help until your project is done.  #DIYHOTTUB, #homeimprovement, #backyardprojects, #buildyourownspa, #DIY.
  • Couple enjoying their Custom Built Hot Tub. #custombuiltspas, #diyhottub, #backyardprojects, #homeimprovement, #customspa, #buildyourownhottub
  • DIY Hot Tub built by Custom_built_spas with a deck surround. #DIYHOTTUB, #homeimprovement, #backyardprojects, #buildyourownspa, #buildyourownhottub
  • Can you imagine sitting under this gorgeous waterfall? This would feel great after a long day of work!
#modernhome #homerenovation #currentdesignsituation #hottub #Jacuzzi #sauna #ideas #diy #projects #easy #diyproject #customspa #diyspa #spa #diyhome #landscapedesign #instahome #outside #inspa
See More Customer Built Custom Spas

The Latest News

1 December

Hot Tub Facts – Straight Talk

With so many buying options for hot tubs and spas, if you’ve never owned a hot tub before, there’s a really good chance you’re going to make a mistake on your first hot tub purchase. That mistake could very well lead you to being turned off about owning another hot tub in the future and […]

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16 November

Hot Tub Health Benefits

Hot Tub Health Benefits and a few Cautions. It’s a pretty well known fact that there are a number of hot tub health benefits that a nice hot water soak in a spa or hot tub can offer your body. But, do you know just what areas of your body and mindset benefit most from […]

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31 October

Our Hot Tub History – Hitting the $1 Million Milestone

Our Hot Tub History In 1999, Gene Trumbull decided to help people everywhere achieve their dreams of hot tub ownership. Since then, he and his company, Custom Built Spas, have focused on providing knowledge and encouragement to thousands of customers around the world eager to create their own hot tubs, spas, exercise pools, cocktail pools […]

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