FAQ

In Marin, a professionally installed sauna kit typically lands in the mid four figures once foundation and electrical are included. A fully custom indoor room is usually five figures, and a large outdoor cabin or commercial suite goes up from there. The heater, the wood you choose, and how far the panel is from the room move the number more than square footage does. We quote flat rate after a site visit, and the estimate is free.

Most residential electric sauna heaters need a dedicated 240V circuit — commonly 30A to 60A depending on the kW rating, which is itself set by the cubic volume of the room. Small infrared cabins sometimes run on a dedicated 120V circuit. Every heater needs its own home run to the panel with no shared loads, and the disconnect and any GFCI protection has to meet current code. We size the heater first, then coordinate the wiring so it passes inspection.

If you will use it, yes. The homeowners who love theirs are the ones who put it somewhere convenient — off the bathroom, in the basement, ten steps from the back door — and chose a heater that gets to temperature fast enough for a weekday. The ones who regret it built a beautiful room at the far end of the garden that takes ninety minutes to warm up. We design around your actual routine for exactly that reason.

A permitted, professionally built sauna generally reads as a wellness feature that helps a home stand out, particularly in Marin where buyers expect it. An unpermitted one is the opposite — it turns up in disclosure, raises questions in inspection, and can cost you at closing. That is a large part of why we pull permits on every build, even when a homeowner would rather we did not.

Almost always. Outdoor saunas work well across Marin, and a backyard build gives you room for a bigger heater, a proper changing bench, and a cold plunge or outdoor shower beside it. What we check on a site visit is setbacks from the property line, the slope and drainage of the pad, how far the electrical has to run, and whether the structure needs a foundation or can sit on piers.

Some small, plug-in infrared cabins are treated as furniture and need nothing. Anything with a hardwired heater needs an electrical permit, and a freestanding outdoor structure over the size threshold in your town needs a building permit as well. Requirements differ between San Rafael, Mill Valley, Tiburon, and the county, so we check for your address and handle the filing as part of the job.

One accountable party for the parts that are easy to get wrong: a vapour barrier installed in the right direction, ventilation that makes the room breathe, a heater sized to the volume rather than the brochure, wiring that passes inspection, and joinery that stays tight through years of heat cycling. It also keeps your manufacturer warranty intact and puts the work on the record for resale.

Design and permitting, framing and insulation, the vapour barrier and ventilation assembly, the interior wood, benches and backrests, the heater and its controls, the door and any glass, lighting, and the electrical run to the panel. On outdoor builds add the foundation and exterior weatherproofing. We itemise all of it so you can see where the money goes and where you have room to choose.

Nationally, professional installation of a sauna kit commonly runs a few thousand dollars on top of the kit, and custom builds are priced as a whole project rather than by the hour. Bay Area labour, permit fees, and hillside access put Marin at the higher end of any national range you read online. We give you one flat-rate number covering design, materials, labour, and permits.

Typically an electrical permit for the heater circuit, and a building permit once the structure passes your town’s size threshold or sits on a foundation. Plumbing permits come into it if you are adding a shower or a floor drain, and hillside or shoreline parcels can trigger extra review. We confirm what applies at your address before we quote, then file and schedule the inspections ourselves.

A traditional Finnish sauna heats the air and a mass of stones to roughly 160–195°F, and you control the humidity by throwing water for löyly. An infrared cabin runs far cooler, around 120–150°F, and warms your body directly with radiant panels instead of heating the room. Traditional gives you the classic ritual and real steam; infrared warms up in minutes, uses a normal circuit, and suits people who find high heat uncomfortable. A hybrid does both.

On the traditional side, Harvia, IKI, HUUM, Narvi, and Saunum all make efficient electric and wood-fired units, and Saunum in particular is built around better air circulation for lower energy use. For steam, Mr. Steam, ThermaSol, and Steamist offer generators with fast-start and auto-drain features that cut both water and power waste. We are an authorised installer for major heater brands and will spec the one that suits your room rather than the one we happen to stock.

Measure your setbacks first, because they usually decide the footprint before anything else does. A barrel sauna is the most efficient shape for a tight yard — the curve puts the heat where people sit, so a compact one still seats four. If you want a square footprint, a small cabin sauna with an outward-opening door and a covered step will feel bigger than its dimensions. Keep it close to the panel and close to the house.

Air the room out after every session and leave the door ajar so the wood dries. Wipe benches down and use a towel to keep body oils off the wood. Rotate and replace the stones roughly once a year, more often if you throw a lot of water, because cracked stones choke the airflow through the heater. Sand and re-oil benches when the grain lifts, keep the vents clear, and get the heater inspected annually — especially near the coast, where salt air is hard on elements.

The chiller is the whole product. Look for one sized to actually hold your target temperature in summer, not just reach it once, and check the recovery time after a plunge. Then look at insulation, at filtration and sanitation, at how quietly the equipment runs if it sits near a bedroom, and at whether the shell is something you want to look at for ten years. A cheap tub with an undersized chiller becomes an expensive ice bath.

A prefab kit with the substrate already in place is usually three to seven days on site. A custom room framed from scratch runs four to eight weeks from approved design to first heat cycle, and outdoor builds needing a foundation take longer. We give you a real schedule before we start rather than a range.

Yes, and it is a large part of what we do. Send us the model and the manifest, we confirm it suits your space and your electrical service, then take delivery, inventory every piece, and build to the manufacturer specification so the warranty stays intact.

No. We coordinate the dedicated circuit, the disconnect, and the heater hookup as part of the install, and we commission the unit hot before we leave. You deal with one company rather than scheduling trades against each other.

Somewhere you will walk to on a Tuesday. Off a bathroom or in a finished basement is ideal because you are close to a shower and close to the panel. Garages and backyards work well too, and gain you space for a bigger heater and a cold plunge, but the further it sits from the house the more the preheat time starts to matter.

Yes. We demolish and haul away an existing sauna, assess the framing and moisture behind it, and correct anything we find before the new room goes in. Old builds regularly hide a failed vapour barrier, and it is far cheaper to fix while the wall is open.

Most residential projects run four to eight weeks from approved design to first heat cycle, depending on size, materials, and permit timelines. Backyard cabins needing a foundation take longer; a straightforward indoor conversion can move faster. We give you a real schedule before we start.

Yes, and that is exactly where custom earns its keep. We have fitted saunas into closets, under stairs, into basement corners, and onto rooftops. After a site visit we will tell you honestly what your space can hold and design the room around it rather than forcing in a stock kit.

Both work well in Marin and it comes down to space and how you want to use it. Indoor saunas are convenient year round and easy to integrate into a bath or basement. Outdoor cabins create a destination and pair naturally with a cold plunge, garden, or hillside view. We will help you weigh it.

We do. As a licensed general contractor we file through the City of San Rafael or your town’s permit office, coordinate inspections, and build to current electrical, ventilation, and structural code, so you never have to chase paperwork.

Yes. Proper steam depends on engineering that most installs skip: sufficient rock mass, correct heater sizing to your room volume, and intake and exhaust vents placed so heat and humidity circulate evenly. We design for that soft, enveloping heat from the start.

Between roughly 160 and 195°F at the upper bench, at low humidity until you throw water. Most people settle around 175°F. The heat feels tolerable at that temperature precisely because the air is dry, and each ladle of water on the stones changes it completely for a minute or two.

Electric if you want to use it on a weekday morning, because it is ready in under an hour and needs no tending. Wood-fired if the fire is part of what you want and you have the clearance, the flue path, and somewhere dry to keep wood. If you can afford it, a hybrid removes the choice entirely.

More than most kit heaters ship with. Stone mass is what stores energy and releases it as soft steam rather than a sharp blast, so we specify heaters rated for a heavy stone load and fill them properly. It is the single biggest difference between a room that feels Finnish and one that feels like an oven.

Yes, and most of ours do. An indoor traditional room needs a correct vapour barrier, real ventilation, and a dedicated circuit, all of which we handle. Wood-fired indoors is possible but needs a flue path and clearances that many houses cannot give you, so indoor builds are usually electric.

A traditional sauna is hot and mostly dry, with humidity you create in bursts. A steam room runs far cooler, around 110 to 120°F, at total saturation, and it needs a tiled and waterproofed enclosure rather than a wooden one. Different rooms, different construction, and we build both.

They do different things. Infrared warms your body directly at a temperature you can sit in for forty minutes, heats up in fifteen, and often runs on a normal circuit. Traditional gives you high heat, real steam, and the Finnish ritual. If you want löyly, infrared will not satisfy you; if you want a comfortable daily sweat with minimal fuss, it is the better tool.

Most one to three person residential cabins need a dedicated 120V 15A or 20A circuit, meaning its own home run with nothing else on it. Larger cabins and full-spectrum units generally need 240V. We check your panel capacity and run the circuit as part of the install.

It is worth checking rather than worrying about. Reputable manufacturers publish measured EMF figures taken at bench height, and well-shielded carbon panels read low. We ask for those numbers on any cabin we specify, and we will ask on your behalf for one you are considering buying.

Usually one to two days once the circuit is in place, and about a week end to end if we are running new electrical and trimming the cabin into a wall. It is the fastest sauna install we do by a wide margin.

Only if it is a model built for it, with a weatherproof shell and outdoor-rated electrics, and even then it wants a covered position. Standard indoor cabins will not survive Marin’s damp under a fog line. For outdoor use we would generally steer you toward a traditional cabin or barrel build.

A steam room runs around 110 to 120°F at total humidity, in a fully waterproofed tile or stone enclosure fed by a generator. A traditional sauna runs 160 to 195°F at low humidity, in an untreated wood room heated by stones. Steam is gentler on the lungs; sauna is hotter and drier. They are different rooms built in completely different ways.

Usually yes, and it is one of our most common jobs. The enclosure has to be sealed to the ceiling, the waterproofing upgraded beyond normal shower standard, the ceiling pitched, and a generator sited and plumbed. It is a construction project rather than a fixture swap, so we look at the bathroom before quoting.

Anywhere within the manufacturer’s pipe run limit that stays dry and can be reached later: a vanity cabinet, a nearby closet, a basement, or an insulated attic. We deliberately avoid burying them in walls, because every generator eventually needs descaling or a valve replaced.

A correctly sized generator brings a residential enclosure to temperature in about ten to fifteen minutes, and fast-start models are quicker. If yours takes half an hour, it is almost always undersized for the surface material in the room rather than faulty.

Flush and descale it periodically, more often on hard water, and models with auto-drain handle most of that themselves. Beyond that it is annual inspection of the valve and element. Marin water is manageable, but we still recommend a yearly check, which we can fold into a maintenance visit.

Efficiency and footprint. The curved ceiling sits close to where you actually sit, so there is less air to heat and the room comes up to temperature faster. In a small Marin yard where setbacks dictate the space, a barrel also fits places a square cabin cannot, and it costs less to build.

On level ground, a compacted gravel and paver pad is usually enough. On any real slope we pour concrete piers so the cradles stay true, because a barrel that settles unevenly will rack and the door will stop sealing. Marin hillsides make this the part of the job worth doing properly.

Yes, and outdoors is where wood-fired makes the most sense, since you have the clearance and the flue path indoor builds rarely allow. We detail the flue, spark arrestor, and heat shielding to code and check the local requirements, which are stricter in higher fire risk parts of the county.

Western red cedar handles Marin’s damp well and a properly sited barrel on a drained foundation lasts decades. Most degradation we see comes from standing water under the cradles or bands that were never retensioned, both of which are install issues rather than material ones.

An electrical permit for a hardwired heater, yes. A building permit depends on the footprint and your town’s threshold, and some barrels sit under it. We confirm for your specific address in San Rafael, Novato, Mill Valley, or wherever you are before quoting.

A comfortable two-person room needs roughly four by six feet with a seven-foot ceiling. Four people want around six by six. Ceiling height matters more than people expect, because the upper bench has to sit high enough to be in the hot layer of air, so a low basement ceiling changes the design.

Not when the assembly is right. A correctly installed foil vapour barrier facing into the room, an air gap behind the cladding, and real ventilation keep moisture where it belongs. Damage happens when the barrier is missing, reversed, or unsealed at the seams, and that is the most common defect we find in existing builds.

Basements are one of our favourite places for one. The framing is often already open, the panel is close, and the space is usually underused. The extra considerations are damp, drainage, and making sure the exhaust duct genuinely reaches outside air rather than a crawlspace.

Not always. A traditional dry sauna where you throw modest water can work on a sealed, sloped floor with no drain. If you plan heavy löyly, want to hose the room down, or you are building in a basement, a drain is worth it and much easier to install during the build than after.

A closet or alcove conversion is usually two to three weeks. A framed basement room runs four to six weeks including permitting and inspection. If we are working alongside a bathroom renovation, we sequence into that schedule so you are not living through two projects.

An electrical permit for any hardwired heater, and a building permit once the structure passes your town’s size threshold or sits on a foundation. Hillside and shoreline parcels can trigger extra review. Requirements differ between San Rafael, Mill Valley, Tiburon, and unincorporated county, so we check your address before quoting and file on your behalf.

Close enough that you will walk out in the rain. Twenty or thirty feet is usually the sweet spot: far enough to feel separate, near enough that the electrical run is sensible and you are not crossing the whole garden in a towel in February.

Yes, when it is built for it. Western red cedar is naturally rot resistant, and what matters beyond that is a drained foundation with no standing water underneath, real flashing, a rain screen, and roof drainage that moves water away. Almost every failed outdoor sauna we have inspected failed at the base, not the walls.

That is one of our favourite versions of this job. Sharing the pool’s decking, drainage, and utility runs keeps the cost down, and having somewhere hot beside the water turns a summer-only area into something you use all year. We coordinate with your pool equipment and any existing electrical.

A barrel on a prepared pad can be a week or two. A framed custom cabin with a poured foundation and permitting runs eight to twelve weeks end to end. Winter rain affects foundation and exterior work in Marin, so we schedule ground work around the weather rather than fighting it.

Duty cycle, mostly. Commercial heaters are built to run continuously instead of for a 45-minute session, ventilation has to be sized for a room that never dries out overnight, controls are lockable and on timers, and benching is built to be repaired rather than replaced. Put residential equipment into a gym and you will be buying it twice.

Yes, and we prefer it on larger projects. We take the wet-room detailing off the architect’s plate, flag anything in the drawings that will not survive daily commercial use, and build to the design intent. We can also design the rooms outright if there is no drawing set.

Usually not entirely. We phase work, isolate the wet area, and schedule the disruptive stages out of hours where the building allows it. Tell us your operating hours early, because it changes the sequence and we would rather plan around it than work around it.

Broadly: door clear width, turning and clear floor space, a transfer-height bench, and controls within reach range, alongside temperature limiting and signage. The specifics depend on the occupancy type and whether it is new construction or an alteration, so we confirm the applicable requirements at design stage rather than at inspection.

We do, and for commercial rooms we recommend one. Scheduled visits cover heater and element inspection, stone rotation and replacement, bench and wood care, ventilation checks, door and seal adjustment, and generator descaling on steam rooms. It costs far less than the emergency call that follows a neglected room.

Yes, and that is most of what we do here. Send us the model and manifest, we confirm it suits your space and service, then receive the shipment, inventory it, and build. If you have not ordered yet, we will help you choose the right kit first, which usually saves money.

It protects it. Manufacturers tie coverage to spec-correct assembly and proper electrical, which is exactly how a licensed builder works. We document the install so a future warranty claim has nothing to push back on.

Often yes, especially for a hardwired heater or a structure above a certain size. Requirements vary by town, so we check with the City of San Rafael or your town’s permit office and handle the permitting as part of the job.

Most kits complete in three to seven days on site once all materials arrive, depending on site prep, electrical, and finish. We confirm a timeline after reviewing your kit and space, and we do not start until the shipment is fully inventoried.

Yes. Most sauna heaters need a dedicated 240V circuit, and we coordinate the wiring, hookup, and commissioning as part of the build, then test the heater hot so you know it performs before we leave the site.

Yes, and most of our service work is on saunas built by others, from imported Finnish rooms to off-the-shelf kits and infrared cabins. We will inspect any brand, diagnose what it needs, and bring it back to safe, reliable working order.

Usually yes. Weak heat almost always traces to a worn element, scaled or compacted stones, or degraded insulation, and all three are repairable at a fraction of replacement cost. We test the unit under load, then tell you honestly whether repair or replacement makes more sense.

A full check once a year, and more often for outdoor and coastal saunas where Marin’s fog and salt air are hard on wood and vents. Annual wood care plus a heater inspection prevents most of the failures that turn into expensive repairs.

Usually. We arrive stocked for common repairs — stones, heater elements, sealants, and refinishing gear — so most calls finish the same day. Full rebuilds or special-order parts get a scheduled return with a firm scope agreed in advance.

A yearly visit covering heater and stone inspection, bench and wood care, vapour barrier and ventilation checks, and door and seal adjustment, at a predictable rate. It keeps the sauna performing and catches small issues before they turn into repairs.

It is a different thing rather than a better one. A cedar tub gives you deeper water, natural wood aroma, and a quieter, more elemental soak instead of jets and moulded plastic. It asks for a little more care, and it rewards that with a warmth and character a manufactured spa cannot match.

Yes, and we recommend it. Designing the tub, sauna, and plunge together means shared permits, one electrical trench, and a single crew. That lowers your combined cost and gives you a true hot-and-cold contrast ritual in one connected space.

Electric is the simplest: set a temperature and step in whenever. Wood-fired offers the ritual of building a fire, independence from the grid, and no running cost beyond firewood, at the price of a two to four hour heat-up. We walk you through clearances and siting so the choice fits how you will actually use it.

Western red cedar is naturally rot resistant and dimensionally stable, which is why it has held water for generations. We use tight-grain heartwood, band the staves properly, and specify weather-rated hardware. With the simple care routine we provide, the tub silvers gracefully and lasts for years.

Most installs involve electrical, and sometimes structural or plumbing permits, particularly where a tub is set into a deck. As a licensed Class B General Building Contractor we manage the permitting and inspections for you across Marin County.

With a correctly sized chiller your plunge holds a consistent target between 39 and 55°F, ready whenever you are. You set the temperature you like and it stays there, with no ice, no waiting, and no daily guesswork.

The chiller, before anything else. Check that it is sized to hold your target temperature in summer rather than just reach it, and look at the recovery time after a plunge. Then insulation, filtration and sanitation, how loud the equipment is if it sits near a bedroom, and whether the shell is something you want to look at for a decade.

Either works. A plunge is a complete recovery tool on its own. Many clients pair it with a sauna for true Nordic contrast therapy, alternating hot and cold, and if that interests you we design both together so the layout and utilities line up.

Far less than an ice routine. Ozone and UV sanitation plus inline filtration keep the water clean with minimal chemistry, so upkeep is mostly periodic checks and occasional water changes. We tune the system and show you exactly what your weekly routine looks like.

Yes. We handle outdoor pads and decks, indoor mechanical rooms, and rooftop installs. Each has its own structural, drainage, and noise considerations, which is why we engineer the filtration to run quiet and design the install to suit that specific location.