Call Today: (860) 571-8440

Why buy a hot tub?

When you can build one!

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

Learn How to Build Your Own Custom Spa, Hot Tub, Swimspa or Plunge Pool!

  • Get my "Award Winning" Hot Tub Building Information Package! (voted the #1 How to DIY information guide for building Spas, Hot Tubs and Plunge Pools). Covers all the steps and details you need to Build Your Own Spa, Hot Tub, Plunge Pool, Cocktail Pool, Swim Spa or Exercise Pool - easy to follow books and videos!
  • The “All NEW” 2019 package includes 6 Books Packed with Spa and Hot Tub Building Information and Knowledge, Plus, now you get “TWO” complete Videos of actual Hot Tub Build Projects start to finish! Sit back and Watch as I take you through each of the "How to do it steps" needed to complete your own Spa, Hot Tub or Swim Spa!
  • In addition; You Get “TWO FREE DIY Bonus Books” that cover more awesome must have DIY backyard projects! A total of 8 books in all! – These books are all my newest revisions for 2019 and include the latest money saving tips and updates!
  • Here's the best part! As a Custom Built Spas customer, you can get FREE Unlimited Email and Over-the-Phone Consultation from me, an Industry Recognized Expert. - You'll get personal one on one Coaching help until your project is completed and up and running!
  • Custom Built Spas’ “How To Do It” information package is the “Gold Standard” for DIY information on Hot Tub building projects and is not available anywhere else! For over 20 years, Custom Built Spas has been helping customers, not just in the USA but around the world build spas and hot tubs! I know I can help you build a successful project!

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Meet the Expert, Gene Trumbull

Custom Built Spas was started as a Veteran Owned Business, established in 1999 by Gene Trumbull. Gene understands the desire and satisfaction fellow DIYers, (do it yourself), get by being able to construct and complete different kinds of projects by themselves. What he also came to realize was that when 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 can find a few videos on YouTube with all kinds of crazy ways to construct a spa or hot tub. But most of those quite honestly, produced results you would not be proud to show off in your own backyard.

In addition, the information that you were able to find, lacked way too many important and essential details, critical to someone looking to complete a successful spa or hot tub project. Armed with that knowledge, Gene made it his mission to turn building a spa, hot tub or swim spa into a very doable, high quality DIY project not only for himself, but for others as well. Long story short this all started almost 20 years ago!

Since then, Gene has become one of the nations most recognized and a leading authority 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 Gene has countless customer who have completed projects not just in the USA, but in many countries 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 it, who offers that kind of service these days? Go ahead and read through his testimonials page and see what customers have had to say!

Learn More About Gene and Custom Built Spas Buy Now

Real Results from our clients and others

(Directly from Instagram #CustomBuiltSpas)

  • Winter is coming and how exhilarating would it be jump in your own hot tub while the snow is falling! Custom Built Spas customer Zack L loves doing this in his own DIY hot tub. Custom Built Spas supplied instructions, equipment and build support throughout his project! Visit for more information and see how we can help you!  #DIY,  #buildahottub, #swlmspas, #plungepools, #buildaspa .
  • Ready to build your own hot tub? Let the experts on DIY hot tubs at Custom Built Spas help you from start to finish for Free! Visit, see what we offer. Plus, visit our gallery and see some of the beautiful hot tubs our previous customers have built! #DIY, #buildahottub, #plungepools, #swlmspas, #howtobuildahottub, #backyardhottubs
  • Want to learn how to build a simple DIY hot tub like this one? How about if you got FREE help start to finish. This is what you get with Custom Built Spas. Learn more by visiting: #DIYHOTTUB, #DIY, #plungepool, #swimspa, #howtobuildahottub
  • Just when you thought you wouldn't be able to get that hot tub you wanted this, Custom Built Spas comes along and shows you how to build one of your own at a price you decide! Want to know more? Visit for more details! #DIYHOTTUB, #buildyourownhottub , #plungepool, #swimspa, #howtobuildaplungepool
  • How awesome would this hot tub be in your backyard! Let Custom Built Spas help you make it happen. We offer FREE help start to finish and an award winning information package with videos giving you all the how to information you need to know! Visit for more information now! #DIYHOTTUB, #backyardprojects, #buildyourownspa, #buildyourownhottub, #buildaplungepool, #swimspa, #homeimprovement
  • Would you love to have your own hot tub but don't think you can afford it? I can show you how you can afford a hot tub customized just the way you want it! Visit for more information! #buildyourownspa, #buildyourownhottub, #homeimprovement, #backyardprojects, #DIY, #plungepool, #swimspa
  • Build it your way and Custom Built Spas has your back! The leader in DIY  hot tub, Spas, swim Spas and plunge pool construction for the last 20 years! Get Free personal help with your hot tub project! Visit for more information! #DIYHOTTUB, #backyardprojects, #buildyourownspa, #DIY, #plungepool, #swimspa,
  • Here's the deal. You can sit around wishing you had a hot tub or you can take action with Custom Built Spas and let us help you build one of your own! You can get our help for FREE after getting our highly detailed DIY info package at, #DIYHOTTUB, #backyardprojects, #buildyourownspa, #plungepool, #swimspa, #howtobuildahottub
See More Customer Built Spas and Hot tubs

The Latest News

10 July

Hot Tub Water Features

Hot Tub Water Features… the upsides and downsides! Over the years, some of my customers have elected to add some type of water feature to their spa, hot tub or plunge pool projects. These types of features are perfect compliments to a hot tub or plunge pool, they add ambiance, a little extra class, soothing […]

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3 March

Planning Your New DIY Hot Tub or Plunge Pool

With spring around the corner, DIYers like me, you and many others are getting the itch to get outside and start working on new projects we’ve been looking at and are considering building this year. For some of you that may include a new hot tub or plunge pool for you and your family. And […]

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9 February

Party Pools

Party Pools… they are becoming the New rage! So, what are “Party Pools”? I mean we already have spas, hot tubs, swim spas, plunge pools, cocktail pools, exercise pools and now  “Party Pools”! Let’s talk about what it isn’t for a minute, then I’ll cover in depth what it is! First, it’s not one of […]

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