Build a Backyard Sauna That Fits a Parking Space

Geodesic design means better heat, less waste, and a sauna you actually own. Open-source plans from $29.

Why Geodesic?

Superior Heat Retention

The spherical shape minimizes surface area, keeping heat inside. Geodesic saunas reach temperature faster and hold it longer than barrel or box saunas.

No Wasted Corners

Every square foot is usable. No dead space in corners or awkward angles. More seating, better airflow, and a more immersive experience.

Modular and Expandable

Start with a basic hot room and add a cold plunge, changing area, or porch later. The modular panel system means you are never locked into one layout.

Fits Anywhere

A 10-foot geodesic sauna fits in a standard parking space. Perfect for urban backyards, lake lots, or rural properties.

How It Works

Design It

Use our free 3D configurator to customize your structure. Pick your size, materials, and layout.

Get Quotes

Receive itemized material quotes from verified vendors in your area. No middlemen.

Build It

Follow the open-source plans and build it yourself, or hire a local contractor. Standard lumber, common tools.

Frequently Asked Questions

Material costs range from $3,000 to $8,000 depending on size and finish. The $29 handbook includes a full bill of materials with current pricing. Compare that to $15,000–$40,000 for prefab barrel saunas.

Most builders complete the shell in 2–3 weekends. Interior finishing (benches, heater, insulation) takes another 1–2 weekends. No special skills required — just basic carpentry.

Permit requirements vary by location. Most areas treat saunas like garden sheds — under 120 sq ft usually needs no permit. Check with your local building department. The handbook includes guidance on common code requirements.

Standard dimensional lumber (2x4, 2x6), plywood sheathing, cedar or spruce interior, a sauna heater, and basic insulation. Everything is available at your local lumber yard. No specialty hardware required.