Bespoke Garden Sauna UK — The Sanctuary vs The Hideout vs Heat Quad vs Fort Soleil

Bespoke Garden Sauna UK

The Sanctuary · The Hideout · Heat Quad · Fort Soleil — four handcrafted Finnish saunas compared side by side so you can choose the right one for your garden.

From
£9,990
Delivery
6–10 weeks
Warranty
2 years

Four bespoke garden saunas, compared

All four models in this guide are handcrafted to order, delivered fully pre-assembled to mainland UK, and include a 2-year warranty. None require planning permission in most UK gardens. The differences are in size, capacity, internal finish, and the specific features each brings to the sauna experience.

The decision framework

Before we go model by model, the honest shortcut: your garden footprint and your regular group size will usually make the decision for you.

  • Small-to-medium garden, up to 5 people: Sanctuary or Fort Soleil
  • Medium-to-large garden, up to 5 people with premium finish: Fort Soleil
  • Compact budget, entry-level bespoke: Heat Quad
  • Large garden, serious entertainers, 6+ people: The Hideout

The Sanctuary

From £14,995

  • Up to 5 people
  • External: W240 × L340 × H240cm
  • Sauna room: 200 × 200cm
  • Changing room: 200 × 120cm
  • Thermowood Siberian Spruce
  • Weight: 1,500–1,600kg
  • Lead time: 8–10 weeks

Best for: families who want a changing room, bespoke colour options, and a generous internal sauna space.

View The Sanctuary →

The Hideout

From £19,995

  • Up to 6 people
  • External: 5m W × 2.4m L
  • Sauna area: 241cm | Changing: 215cm
  • Black alder wood interior
  • 10cm mineral wool insulation
  • Weight: 2,200kg
  • Lead time: 6–8 weeks

Best for: the largest groups, premium black alder finish, panoramic tinted glass windows and a private terrace.

View The Hideout →

Heat Quad

From £9,990

  • Up to 5 people
  • External: 300 × 240 × 240cm
  • Siberian Spruce or Thermowood
  • Colour options: Black, White, Brown
  • Lead time: 6–8 weeks

Best for: buyers wanting the most affordable entry into a fully handcrafted outdoor Finnish sauna. Compact and versatile.

View Heat Quad →

Fort Soleil

From £14,499

  • 5 people
  • External: 245 × 340cm, H250cm
  • Interior: Grade A aspen wood
  • Panoramic window: 150 × 175cm
  • 10cm PAROC insulation (optional)
  • Lead time: 8–10 weeks

Best for: buyers who want a premium Grade A aspen interior, large panoramic window, and the option for full PAROC wool insulation.

View Fort Soleil →

Side-by-side specification table

Spec Sanctuary Hideout Heat Quad Fort Soleil
Price from £14,995 £19,995 £9,990 £14,499
Capacity 5 people 6 people 5 people 5 people
External footprint 240 × 340cm 500 × 240cm 300 × 240cm 245 × 340cm
Interior wood Siberian Spruce Black Alder Siberian Spruce / Thermowood Grade A Aspen
Changing room ✓ 200 × 120cm ✓ 215cm — ✓ anteroom 190 × 70cm
Panoramic window Optional ✓ 8mm tinted Optional ✓ 150 × 175cm
Insulation Standard 10cm mineral wool Standard 10cm PAROC (optional)
Lead time 8–10 weeks 6–8 weeks 6–10 weeks 8–10 weeks
Warranty 2 years 2 years 2 years 2 years

Heater options across the range

All four models support both electric and wood-burning heaters from Harvia, Finland’s leading sauna heater manufacturer.

  • Electric heater — Harvia Cilindro PC90 9kW: precise digital temperature control; optional Harvia mobile app remote (£400 upgrade). Requires a dedicated electrical supply.
  • Wood-burning — Harvia Pro / 20 Pro: traditional löyly experience; no electrical requirements for the heater itself. Authentic Finnish sauna feel.
  • Harvia Legend (Hideout only): premium wood-burning heater with optional 30-litre water tank for steam generation.

Delivery, base and installation

All four models are delivered fully pre-assembled across mainland UK. The delivery vehicle is a flatbed or curtain-side lorry. A crane or forklift is required to position the sauna — this service is quoted and arranged separately (typically £300–£800 depending on access and location).

A solid, level concrete base must be in place before delivery. The base must be rated to support the sauna’s filled weight. Consult a structural engineer if unsure about your ground conditions.

If choosing an electric heater, a dedicated power feed must be installed by a qualified electrician prior to delivery. This work is subject to Part P building regulations.

Ready to discuss your bespoke specification?

Our team will walk you through every option before you commit to anything.

📞 0330 133 6617

To discuss bespoke specifications: 0330 133 6617 | Bespoke sauna service page

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