Spa Installation & Custom Spa Builders

Pool Installation San Diego, Built-In Spas and Outdoor Wellness Features

Custom Spa Installation and Construction in San Diego

Built to Match Your Vision

Unwind at home with a custom-built spa designed just for you. At S Squared, Inc., we create luxury inground spas and hot tubs that seamlessly blend into your outdoor living space. Whether you’re adding a spa to your new pool build or upgrading your backyard as a standalone feature, our licensed team delivers a smooth and stress-free experience—from design to final tile.

Visualize Before We Build with 3D Renderings

Not sure where to start? Our advanced 3D rendering service gives you a lifelike preview of your custom pool and spa layout—complete with materials, colors, and landscaping elements. You’ll be able to explore your design, make adjustments, and feel confident in every decision before construction begins.

Whether you’re imagining a sleek modern pool, a cozy built-in spa, or a full outdoor entertainment space, our team brings it all together with expert planning, engineering, and craftsmanship.

Licensed & Insured

3D Design Rendering

Custom-Built Solutions

On-Time Completion

Custom Inground Spa Design

Choose from circular, square, or freeform spa shapes, and personalize every detail—depth, jet layout, lighting, tile finishes, and more.

Spa & Pool Combo Builds

Combine your new spa with a custom pool build for the ultimate backyard retreat. We’ll design a seamless, energy-efficient integration.

Energy-Efficient Heating Systems

We install high-efficiency heaters and automation systems so your spa is always ready to go—without spiking your energy bill.

Hydrotherapy Jets & Ergonomic Seating

Relax, recover, and relieve stress with powerful jet configurations and comfort-focused bench seating, customized to your needs.

Some Of Our Spa Installation & Design Projects

Our Reviews

We strive to create our clients' vision a reality and present outstanding quality with the purpose of increasing property value. Specializing in residential and commercial property renovations and additions as well as luxurious pool developments, our construction groups are committed to executing projects in the most professional, time efficient, and financially economical way possible.

Why Choose S Squared, Inc.?

Family-owned. Licensed. Over 20 years of experience.

We’re more than just builders – we’re your partners in turning dream spaces into real places. S Squared, Inc. is a San Diego-based construction company specializing in residential remodeling, commercial renovations, and custom pool & spa construction. Whether it’s your home or business, our team brings precision, craftsmanship, and dedication to every job.