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. For ready-to-ship models alongside the bespoke options, see our full outdoor sauna range.

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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