Custom Indoor Cedar Sauna Installation
in St. Louis

More spaces than you think

The most common thing we hear at a first consultation is some version of "I don't think I have the space." We almost always prove them wrong. Indoor cedar saunas can be built in spaces you might not have considered:

• Basements — The most popular choice. Basements offer privacy, consistent temperature, and often more square footage than homeowners realize. A basement sauna conversion is one of the best ways to turn underused space into something you use every day.
• Spare rooms — A guest room that rarely gets guests. An office that feels forgotten. These become sanctuaries.
• Master bathrooms — A walk-in shower converted or extended into a sauna room is a true luxury upgrade.
• Garages — With proper insulation and electrical work, a garage corner becomes a private wellness space.
• Closets — Larger walk-in closets can fit a two-person sauna with thoughtful design.

Everything. End to end.

We don’t hand you a kit. Every indoor sauna installation includes custom cedar milling and fitting, professional-grade heater installation (we love HUUM and Harvia), bench design and construction, proper ventilation, recessed lighting, and flooring. You get a finished room, not a project.

Free consultation to first session

We start with a free in-home consultation — no sales pressure, just an honest conversation about your space and goals. From there, we design your sauna, handle the build at our workshop, and install everything on-site. Most indoor sauna installations are complete in 4–6 weeks from first call — and actual in-home work is typically under a week.

How much does an indoor sauna cost in St. Louis?

Custom indoor sauna installation typically runs $10,000–$30,000 depending on size, cedar grade, heater, and your space. Because we build direct through Satori Cedar Spas, you’re not paying retail markup or a separate contractor. See our full FAQ for more detail.

Do I need a permit for an indoor sauna?

In most St. Louis municipalities, a sauna is treated similarly to a bathroom remodel. We’ll advise you on permit requirements for your specific suburb during consultation.

What type of heater do you install?

We primarily install electric sauna heaters including HUUM and Harvia — trusted Finnish brands known for even heat, longevity, and beautiful stone design. We can also accommodate wood-burning heaters for outdoor builds.