A freestanding 8x8 outdoor sauna designed for a West Shore property in Tahoma — a full hot room that fits a crowd, a corner cylinder heater with WiFi control, and a three-vent ventilation system, all built to shrug off Tahoe winters.
This is an 8x8 freestanding outdoor sauna we designed for a client in Tahoma on Lake Tahoe's West Shore. They wanted a roughly 8x8 sauna at their place that could hold a crowd, stand up to hard Sierra winters, and not ask much in upkeep. We built the design on our proven 8x8 prototype and made the whole interior one hot room — no changing room or partition — which gives a full 64 square feet of usable sauna. The L-shaped, three-tier redwood bench layout is where the capacity comes from: it can squeeze in up to 8 people on the top bench, or 12 across the top and bottom benches, with the top bench up where the real heat lives. The finished interior ceiling sits at 7 feet — tall enough for that top bench to stay in the hot zone without anyone ducking. The heater is a corner-mounted cylinder-style electric heater with WiFi app control — compact footprint, even convection heat, and you can start it from the house so it's ready by the time you walk out back. As with all our builds, ventilation got real attention: a three-vent system with a passive fresh-air intake low near the heater, a mechanical exhaust to actively turn the air over, and a passive drying vent to help the room dry out between sessions. Western red cedar tongue-and-groove lines the interior over R-13 insulated, foil-vapor-barriered walls (R-19 in the ceiling), with dark-stained T1-11 plywood siding outside under a single-slope shed roof with a deep overhang on the entry side to shed snow. Two medium windows were placed specifically to frame views of the surrounding forest and the house while keeping privacy from the neighbors, and warm under-bench LED strips keep the light soft with no fixtures up in the heat zone. It sits on a deck-block foundation, which skips the concrete slab and gets the build moving faster without giving up the strength to carry Sierra snow loads.
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The materials for this design came in around $7,600 owner-built — the electric heater, cedar and redwood, insulation, and ventilation are where most of that goes. With a professional build the all-in figure lands near $15,000, not counting the electrician for the 240V/50A heater circuit or any permit fees. Your own numbers will move with local material prices, the heater you choose, and what you already have on hand.
Includes the layout, materials list, heater sizing, bench dimensions, and design notes — everything you need to use this project as a reference for your own build.
8x8 Outdoor Sauna Plan — $49
Your plan package will be delivered to your email within 24 hours of purchase.
Whether you're building it yourself or hiring it out, we design custom saunas around your footprint, climate, and how you actually want to use them — heater sizing, bench layout, and ventilation all planned before anyone picks up a saw.
Start the Design ProcessTahoe Sauna Company provides design and consulting services only. Construction is performed by the client or by an independent, properly licensed contractor hired directly by the client under a separate agreement.
12 decisions that determine how well your sauna performs — insulation, bench height, heater sizing, ventilation, and more. Get them right before you build.
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