Scott’s Custom DIY Hot Tub in Texas (Case Study)

Last updated: September 2026

Scott, a keen DIYer from Texas, had a dream: to build his own custom hot tub right in his backyard. He had a strong background in construction and was happy to take on a new challenge, so the building side didn’t worry him. What he knew he needed was help with the plumbing and the parts, and that’s where I came in as his hot tub design consultant.

Introducing Scott. “Hi Scott!” First things first: the area needed clearing.

The challenge

The building side of things wasn’t an issue for Scott. He had that covered.

What he recognised was how much the plumbing layout matters for how well a hot tub performs, how safe it is and how efficient it is to run. He also understood that choosing the right parts for the job was crucial. Without proper guidance and good components, a project like this can quickly become overwhelming and expensive.

The biggest mistake you can make is starting a DIY hot tub without a plan. I’ve seen it time and time again, and the results aren’t pretty. They can be very expensive too. I’ve listed the most common ones in Avoid these 7 DIY hot tub mistakes.

The solution

Scott hired me as a hot tub design consultant. He sent me a sketch of what he wanted to achieve, and from that I drew up the plumbing CAD so he had a clear plan to follow for the plumbing side of the build. If you’re wondering how that works, I’ve explained the steps in Custom designed hot tub: the design process, step by step.

I also gave Scott a comprehensive parts list, so every plumbing component the build needed was accounted for. That meant he could start with confidence, knowing the right parts were in place for the tub to work well and last.

The build

Throughout the build, Scott could come to me with any questions he had. I do this for all my custom build clients. It meant he could ask for advice and sort out any concerns as they came up. Wiring questions, how to configure the spa pack: I had him covered. If you’re at that stage yourself, see Hot tub wiring explained and, for Balboa packs, How to configure a Balboa spa pack.

Everybody who builds a hot tub has questions. Some have more than others, and they’re usually about a particular stage of the build they aren’t sure of. There’s always something. This is what I do, and I’m here to help. Over the years my customers have taught me that having someone they can email or get on a Zoom call with is real peace of mind on a project like this.

Here’s how Scott’s build came together.

If you’re planning something similar, these guides cover the stages you can see above: DIY hot tub construction: block, ICF or poured concrete?, installing gunite jet bodies, DIY hot tub plumbing and hot tub tiles.

The result

I think you’ll agree the end result is pretty impressive. Scott completed his DIY hot tub, and it’s a stunning addition to his backyard.

Scott’s hot tub has become a much-loved place to relax in the heart of Texas. With the hot tub under his belt, and a newfound confidence for all things “wet leisure building”, Scott’s next project is a matching pool, creating the ultimate backyard retreat. Watch this space! If you’re thinking of doing the same, have a read of Hot tub pool combo: the complete DIY design guide first.

What Scott’s build shows

Scott’s build shows what good planning, the right parts and a bit of expert advice can do, especially on something with as many systems as a hot tub. With the right resources and determination, even ambitious DIY projects come together.

Scott, what a fantastic job. Thanks for all the pictures, and I can’t wait to see how the pool comes on!

Can I help with your DIY hot tub project?

If you have a sketch and a clear idea like Scott did, my custom hot tub design consultancy turns it into a full design with the plumbing and parts worked out, plus support while you build. If you’ve already got the structure sorted and just need the plumbing, there’s the hot tub plumbing consultancy. If you’d rather design it yourself, try the free Tub & Pool Designer Pro software, and I can turn your design into architectural CAD and a 3D plumbing design.

If a standard size works for your space, my DIY hot tub plans give you CAD drawings with every dimension, the plumbing layout, a parts list and the video course. Not sure where to begin? Start with I want to build a hot tub: where do I start?

FAQs

What does a hot tub design consultant do?

On a custom build, I take your sketch or idea and turn it into a design: the plumbing layout drawn in CAD and a parts list for every component. Then I answer your questions as you build, from wiring to setting up the spa pack.

Do I need a plan to build a DIY hot tub?

Yes. The plumbing layout, the parts and the depth of the hole all need deciding before you dig. Starting without a plan is the most expensive mistake I see.

Can I build the structure myself and get help with the plumbing?

Absolutely. That’s exactly what Scott did. Plenty of builders are happy with concrete and blocks but want the plumbing and electrics designed for them.

Got a question about your own build? Drop it in the comments below. I read them all.

Cheers,
Andi

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Can I Help You?

If I can help you in any way I would love to hear from you. You can get in touch using the form below.

Thanks - Andi

 

Hi, Andi here. I own Buildahottub.com and also write all of the articles and info pages on the site. Some years back now, I built my own hot tub but struggled to find the information I needed. So, once my tub was complete, I started this website to help others in their own pursuit of hot tub and plunge pools DIY building information.

Fast forward to 2025, I've helped over 1400+ DIY customers just like you all over the world build hot tubs and pools. Have a good look around the site, there are lots of resources here. Please do get in touch if I can help you. - Cheers, Andi