Looking to turn your home into a wellness sanctuary? Investing in a sauna is one of the most rewarding upgrades you can make — for both your health and your lifestyle. Whether you're after a compact indoor sauna, a luxury garden build, or a stylish barrel cabin, we've done the research for you.
Below are five of the best home sauna builders in the UK for 2025, covering everything from pricing and reviews to what makes each brand stand out. We also offer a quick enquiry service — if you see a builder you like, just submit a request here and we’ll connect you directly.
1. Finsmark Sauna
Overview: Finsmark (formerly Finnmark Sauna) is the gold standard for authentic Finnish sauna builds in the UK. Known for bespoke craftsmanship and sustainable materials, they specialise in both indoor and outdoor installations — often using Thermo-Aspen and Western Red Cedar.
- Price Range: £6,000 – £15,000+
- Trustpilot Score: ★ 4.6 (42 reviews)
- Best For: Homeowners seeking a luxury, custom-built sauna experience
Why We Like Them: Finsmark is the choice for those who want a sauna that feels like stepping into a Scandi retreat. Their team works closely with you to design a sauna that suits your space, budget, and lifestyle.
Website: https://finnmarksauna.com
2. Harvia (via UK Retailers)
Overview: Harvia is one of the world’s most trusted sauna brands — and a popular choice for UK homeowners. Although based in Finland, Harvia products (especially heaters and sauna kits) are available through multiple UK suppliers and builders.
- Price Range: £3,000 – £8,000
- Trustpilot Score: ★ 4.5 – 5.0 (depending on supplier)
- Best For: DIY sauna setups and kit-based installations
Why We Like Them: If you’re looking for a reliable, cost-effective way to build a home sauna, Harvia offers great value. Many UK installers also use Harvia heaters as standard, making it easy to pair their tech with your preferred build style.
Website: https://www.harvia.com
3. Barrel Sauna UK
Overview: Specialising in barrel-style outdoor saunas, Barrel Sauna UK is a go-to for those wanting a rustic, eye-catching garden feature. Their saunas are available pre-assembled or flat-packed, with options like changing rooms and panoramic windows.
- Price Range: £4,300 – £8,100
- Trustpilot Score: ★ 4.0 (32 reviews)
- Best For: Garden installs with visual impact
Why We Like Them: The curved barrel shape isn’t just about looks — it also promotes better heat circulation. These saunas are especially popular for Airbnb-style garden cabins or wellness enthusiasts wanting an immersive escape just steps from the back door.
Website: https://www.barrelsaunauk.co.uk
4. Saunaverse
Overview: A modern player in the UK sauna scene, Saunaverse brings slick design and wellness-focused kits to the market. They offer both traditional and infrared options, tailored for homes and wellness studios.
- Price Range: £3,500 – £10,000+
- Trustpilot Score: Not yet rated
- Best For: Contemporary homes, wellness spaces, quick installs
Why We Like Them: If you want your sauna to look as good as it feels, Saunaverse is worth exploring. Their sleek builds appeal to modern tastes, and they’re often quicker to install than traditional timber builds.
Website: https://www.saunaverse.co.uk
5. Almost Heaven Saunas
Overview: Based in the US and now available through UK distributors like Leisurequip and Costco, Almost Heaven Saunas are known for their Western Red Cedar barrel kits and user-friendly assembly.
- Price Range: ~£6,500 for a 4-person unit
- Trustpilot Score: ★ 4.7 (via distributors)
- Best For: Those wanting a full sauna kit with minimal fuss
Why We Like Them: These are great-looking barrel saunas that can be self-installed or delivered ready-to-go. They’re especially popular with countryside properties or families looking for a weekend wellness retreat at home.
Website: https://almostheaven.com