Indoor Saunas

Transform Your Boston Home Into a Private Retreat

Dreaming of the peace and relaxation of a luxury spa without leaving your house? At Boston Custom Saunas, we design and install fully customized indoor saunas that blend seamlessly into your home. From master suites and basements to spare rooms and even bathrooms, we turn underused spaces into personal wellness retreats. Every build is tailored to your lifestyle, with a focus on comfort, long-term health benefits, and reliable performance.

What You’ll Receive With a Custom Indoor Sauna

Each sauna we build is completely custom—never a one-size-fits-all kit. Our process includes space planning, detailed design, and expert installation. We work with premium woods such as cedar, hemlock, and spruce, combined with your choice of advanced heating options: electric, infrared, steam, or hybrid systems. Want to elevate the experience? Add upgrades like LED mood lighting, built-in sound systems, or ergonomic bench seating to create a spa-level retreat inside your Boston home.

Frequently Asked Questions

What’s the best room in a Boston home for an indoor sauna?

Indoor saunas can be placed in a variety of locations, each with unique benefits. Finished basements allow for larger builds and stable temperatures, while master bathrooms provide ultimate convenience just steps from showers. Spare bedrooms, walk-in closets, and home gyms are also excellent choices. At Boston Custom Saunas, we evaluate your layout, ventilation options, and goals to recommend the location that offers the most comfort, safety, and long-term performance.

Can I install a custom indoor sauna in my basement?

Yes. Basements are one of the most popular locations for saunas in Boston because they’re private, naturally cooler, and often underutilized. We’ve turned basements in homes from Brookline to Quincy into stunning wellness retreats. Whether you want a stand-alone sauna room or one integrated into a home gym or entertainment area, we’ll ensure proper insulation, ventilation, and heater placement. Electric, infrared, and steam systems can all be adapted to basement installations.

Other popular indoor sauna placements in the Boston area include master bathrooms in Newton, spare bedrooms in Cambridge, and garage studios in Somerville. Whatever your layout, we’ll help you find the most practical and comfortable option.

How long does it take to install an indoor sauna in Boston?

Installation timelines vary, but most projects are completed within 3–10 days once materials arrive. We start with a consultation, prepare a detailed 3D design, and manage all logistics for material delivery and labor. Our Boston installation team works with care and minimal disruption to your household. Once complete, we walk you through every feature, from operation to cleaning and maintenance, so you feel confident using your new sauna daily.

What are the typical dimensions for a custom indoor sauna?

Custom indoor saunas can be designed to fit almost any available space, but certain sizes are common for comfort and efficiency. At Boston Custom Saunas, we build everything from compact 4’ x 4’ personal units to larger 6’ x 8’ or 8’ x 10’ family-sized saunas.

Ceiling height is equally important—7 feet is ideal to maintain even heat while leaving comfortable headroom. Anything over 8 feet can make it difficult to regulate temperatures, especially with traditional heaters.

Popular layouts include:

* 4’ x 6’ for 1–2 people with a corner bench

* 6’ x 8’ for 3–4 people with tiered seating

* 5’ x 7’ for small families or multipurpose spaces

We’ve installed saunas in unique Boston spaces such as attic conversions, angled-roof rooms, and narrow alcoves in historic homes. During your consultation, we’ll measure and recommend the best fit for your property and goals.

Do indoor saunas require special electrical or ventilation systems?

Yes. Proper setup is essential for safety and performance. Most electric and infrared saunas require a dedicated electrical circuit with GFCI protection. We can coordinate with your licensed Boston electrician—or connect you with one we trust—to ensure your wiring meets code. Ventilation is also critical to prevent humidity buildup and ensure proper drying between uses. We include these details in the planning phase so your sauna runs efficiently without impacting the rest of your home.