Custom Indoor Saunas
in the Bay Area
Designed, built, wired & vented inside your home — master bath, basement, spare room or home gym — by one licensed team, start to finish.
A private spa, inside the home you have
An indoor sauna turns a room you already have into a private spa — step out of the shower and into dry, cedar-scented heat without ever leaving the house.
We design and build custom indoor saunas for homes across the Peninsula and Silicon Valley — Atherton, Los Altos, Palo Alto, Hillsborough, Menlo Park, Saratoga — and throughout the Bay Area. A sauna built into your home isn't a box you drop in a corner; it's a real room. It needs a dedicated electrical circuit, real ventilation and moisture control, and finishes that read as part of the house.
Because we hold the general, electrical and HVAC licenses ourselves, one team handles all of it — framing, the 240V circuit, the airflow, the heater and the finish — no handoffs, no "go find your own electrician."
What's included · the build
A real room, every step under one roof.
Design & site evaluation
We visit, measure the room, and design around your space, sightlines and budget (GC, in-house). Solo nook or family room, corner unit or narrow spare bedroom — you get clear drawings before anything is built.
Framing & insulation
Proper studwork, foil vapor barrier and insulation so the room holds heat evenly and stays dry between sessions — and so the heat never reaches the rest of your house.
Electrical — in-house
A dedicated 240V circuit with GFCI protection, panel work, sealed wiring and the heater hookup, all to California code. No outside electrician, no "coordinate it yourself." Infrared and lower-draw builds get the right dedicated circuit too.
Ventilation & moisture control
Correct intake and exhaust so the heat is even, the room dries between uses, and humidity never migrates into the rest of the home. Planned at design time, not patched on at the end.
Heater — electric, infrared or hybrid
Sized to the room. Traditional electric for classic high heat and löyly; infrared for gentle, low-temperature warmth that fits tight spaces and lower bills; hybrid for both. We explain the trade-offs, supply it and install it.
Finish & details
Premium cedar, hemlock or spruce; ergonomic contoured benches; a glass wall or door; low-glare LED lighting; built-in audio — blended in so it reads built-in, not bolted-on.
Walkthrough
We fire it up with you, demo the controls, hand over a care guide, and leave a clean room behind.
Enhancements we love: LED mood lighting · integrated sound · contoured benches · smart controls · glass-panel doors · wood-tone matched to the house.
The moat
One team, start to finish.
Most sauna installers design the room and then tell you to "coordinate with your own electrician." That's the handoff where timelines slip and no one owns the result. We don't work that way.
YOURSAUNAS holds the General Contractor, Electrical (C-10) and HVAC (C-20) licenses in-house — so the framing, the dedicated 240V circuit, the ventilation, the heater and the finish are all done by one accountable team, under one set of permits. One point of contact, cleaner inspections, no finger-pointing between trades. And nothing is handed over until the heater has been test-fired by the same people who wired it.
Investment
Custom indoor saunas typically run from $12,900, depending on size, heater type, ventilation and finishes.
See our process & pricingSelected indoor work
Built inside, across the Bay.
Indoor sauna FAQ
Good questions, straight answers.
A custom indoor sauna is a sauna designed and built into an existing room — a spare room, basement, bath or closet — rather than dropped in as a kit. YOURSAUNAS handles it end to end for Bay Area and Peninsula homes: design, framing, the 240V wiring, ventilation and finish, built and test-fired by one licensed team (GC · C-10 · C-20).
How long does it take to build a custom indoor sauna?
Do indoor saunas need special electrical and ventilation?
Where's the best spot in my home for a sauna?
What size and ceiling height should an indoor sauna be?
Can I put a sauna in my basement?
Do I need permits for an indoor sauna?
Keep reading
Related guides
Sauna kit vs custom: how to choose
Different products, not cheap-vs-expensive versions of one — and how to pick.
Read the guideWhat size sauna do you need?
How many people sets the bench; room volume sets the heater. A rough guide, 2 to 8.
Read the guideTurning a room or garage into a sauna
What a garage, basement, spare room or bathroom each takes to convert.
Read the guideWhat drives the cost of a Bay Area sauna
It's the circuit, the base, the permit and the finish — not just the box.
Read the guideLet's design the room
Thinking about a sauna inside your home? Let's design the room.
Tell us about the space and we'll start the design. A sauna specialist answers — or you hear back the same day.
The site visit is free — and you keep the work
- A layout sketch for your space
- Heater sizing done right for the room
- A licensed 240V load check
- Your permit path, mapped
A real, fast callback — no email runaround.