Finnish saunas, built in New Zealand
Authentic saunas, built to the highest standard.
We bring genuine Finnish heritage into New Zealand homes, combining Scandinavian craft with your vision, so every sauna we design, build and install is exactly right for how you'll use it.
Brought to you by a Scandinavian-trained, qualified sauna builder.
Every FinnSauna room is designed with you, prepared in our Auckland workshop and built on site from materials we import ourselves from Finland and Estonia.
About usDesign & consult
We talk through every detail with you — size, heat source, layout and materials — before a single board is cut.
Build & install
Custom saunas and steam rooms, built by our Scandinavian-trained, qualified team.
Care & maintenance
Oils, stone changes, bench sanding and full servicing. We look after the rooms we build, long after handover.
Every kind of sauna, custom built.
We're sauna builders in Auckland working right across New Zealand. Whether you want a home sauna in a spare room or an outdoor sauna with a view, we design it around your space and build it properly.
Sauna builders in Auckland, working NZ-wide.
Our workshop is in Stanmore Bay on the Whangaparāoa Peninsula, north of Auckland. That's where we design every room, make and test-fit the benches, and keep our stock of heaters and timber. From there our team builds saunas across the North Shore, Auckland and the rest of New Zealand, with team members covering the upper North Island, the lower North Island and the South Island.
We've built home saunas in apartments and on lifestyle blocks, saunas for councils, aquatic centres, gyms and spas, and a few on the other side of the world. The process is the same every time, and so are the people doing it.
Finding the right spot for a home sauna.
Most homes have room for a sauna somewhere. A spare bedroom, the end of a garage, a bathroom, a pool house or an unused corner of the garden can all work. Even a small two-person sauna gives you proper heat and löyly, and if you'd like to lie down, a bench around two metres long does the trick.
What matters is the power supply, ventilation and what goes behind the walls. Send us a few photos and rough measurements and we'll tell you what's possible, what heater it needs and roughly what it involves.
The core of every Finnish sauna
Building your own, or upgrading an old sauna? Heaters, controls, timber and accessories are for sale online, most of it in stock at our Auckland workshop and shipped nationwide. Imported by us, direct from Finland and Estonia.
The right heater, sized to the room.
The heater is the heart of a sauna, and an undersized one is the most common problem we see. We size every heater to the room volume, with extra power for any glass, stone or tile, so the room heats properly and the elements last.
We stock Harvia electric heaters from compact wall-mounted models to 22 kW commercial units, plus Harvia and Narvi wood-fired stoves, steam generators and controls you can run from your phone.
Finnish and Estonian sauna timber.
Sauna timber has to stay comfortable to touch at 80 °C, cope with steam and keep its shape for decades. We import thermally modified alder and aspen, spruce, abachi and Respect panelling ourselves, and use them in every room we build.
Not sure what to choose? Our sauna timber guide explains which woods suit walls and benches, or browse sauna timber for sale.
From first sketch to first löyly.
Every FinnSauna build goes through the same seven stages, whether it's a small home sauna or a commercial facility.
Design and planning
Send photos or plans. We size the room, benches and heater and agree the look.
Materials
Timber, heater and fittings chosen for the room and how you'll use it.
Frame and insulation
Insulation, a real vapour barrier and heat-rated cable: the parts you never see.
Walls and ceiling
Lined in sauna timber, with ventilation planned in from the start.
Benches and details
Built and test-fitted in our Auckland workshop before they go to site.
Heater and tiling
Heater, stones, controls and any tiling, fitted and tested.
Handover
We show you how to run and look after your sauna, then you enjoy the first round.
The heater with a 3-year warranty.
The only heater on the New Zealand market with a three-year warranty, even in commercial use. Built for large saunas and heavy daily use, from busy homes to gyms, hotels and spas. Available here only through FinnSauna.
See electric heatersThe sauna wall that stays straight.
Respect STS3 is a new kind of sauna panel: a premium thermo-alder face, heat-treated at 190–230 °C with no chemicals, over an engineered core. Odourless and highly resistant to moisture, heat and warping, it's engineered to stay flatter and straighter than solid boards as the room heats and cools.
- Profile
- 15 × 120 mm
- Cover width
- 110 mm
- Lengths
- 2100 · 2700 mm
In Finland, the sauna isn't a luxury. It's where life happens.
Finland has an estimated 2 to 3.2 million saunas for a population of just 5.5 million. For almost every Finn it's the most important room in the house: where they relax, socialise, do business and mark life's biggest moments.
Our founder grew up inside that culture, bathing in his grandparents' sauna in Lahti, by Lake Alanen, more than fifty-five years ago. That same respect for the ritual, the heat and the löyly is what he brings to every sauna FinnSauna builds in New Zealand today.
New Zealand's longest-established sauna specialist.
Same owners. Same people running it. No sell-offs, no change of hands — just the ones who started it, still building saunas in Auckland.
- Longest-establishedSauna specialist in New Zealand
- Original ownershipNever sold, never passed on
- Original managementThe same people, start to finish
Some of the saunas we've built, from all over New Zealand to the Maldives.
Every one custom designed, prepared in our workshop and built on site. Our own builds, photographed — never stock images.
Kudadoo Private Island
The sauna and steam room at Sulha Spa, Kudadoo: an adults-only private island resort in the Maldives.
South Waikato Aquatic Centre
The sauna in the new wellness area at the South Waikato Aquatic Centre, reopened in October 2026.
Ocean Spa
A complete renewal of the sauna and steam room at Napier City Council's Ocean Spa, right on Marine Parade.
Every sauna has its own character — its own distinctive löyly. The better the löyly, the more enjoyable the sauna.
Founder & CEO
What people ask us most.
How much does a home sauna cost?
It depends on the size, the heater, the timber and where it's going. Every FinnSauna sauna is custom, so the quickest way to a figure is to send us rough measurements and a photo of the space.
Indoor or outdoor sauna?
Both are great. Outdoors gives you the walk out into fresh air and suits a wood-fired heater. Indoors is right there whenever you want it.
Do saunas use a lot of electricity?
Less than most people think. At around 40 cents per kWh, an 8 kW heater running flat out costs about $3.20 an hour, and once the room is hot the heater cycles on and off, so a session costs less.
Infrared or traditional sauna?
A traditional sauna gives you high heat and löyly; infrared gives a milder, longer warm. Here is an honest comparison, or have both in a hybrid.
Do you sell sauna kits?
No. Every FinnSauna sauna is custom designed and built for its space. We do sell heaters, timber and accessories if you're building your own.
Where do you work?
All over New Zealand, from our workshop in Whangaparāoa, Auckland. We've built saunas from Northland to the South Island, and as far as the Maldives.
Based in Whangaparāoa, Auckland. Building saunas from Northland to the South Island.
