All About Buying an Outdoor Sauna

The costs for an outdoor sauna depend on factors such as size, construction method, type of heating, choice of materials, finish, foundation and desired extensions. The table below provides a structured overview of the cost structure, based on average market prices in 2025.

1. Basic construction

2. Heating system

3. Foundation and construction

4. Technology and facilities

5. Optional extensions

6. Total indication (2025)

Important considerations

• Permits: Checking via the Omgevingsloket is recommended for larger installations or placement outside the building zone.
• Groundwork: Costs for excavation, debris removal, or relocation of pipes are not included.
• Installation: Prices exclude travel costs, crane costs (if necessary), and any connection to heat pumps or solar panels.
• Seasonal influences: Additional costs may apply for work preparation when installing in winter or wet periods.

The total price of an outdoor sauna depends on several technical, structural, and functional choices. These factors directly influence both the initial investment and the long-term costs (energy, maintenance, lifespan). Below is an overview of the main price-determining elements.

1. Size and Layout

What determines the price:

• External dimensions (length x width x height)
• Number of seating and lying places
• Added spaces (such as changing room, canopy)

Effect:
The larger the sauna, the more materials, labor, and heating are required. Extra compartments increase costs by an average of €2,000–€6,000 per addition.

2. Type of construction

Possible variants:

• Prefab sauna (faster installation, lower costs)
• Custom-built sauna (fully tailored to wishes, higher construction costs)
• Barrel sauna, log cabin model or sleek design cabin

Effect:
Prefab models are generally €3,000–€5,000 cheaper than custom-built ones. Special shapes or deviating constructions (e.g., panoramic design) incur additional costs.

3. Material Choice

Important Choices:

• Exterior Facade: Thermo-wood, Larch, Red Cedar, Aluminum
• Interior Cladding: Aspen, Ayous, Red Cedar
• Benches and Floors: Solid wood vs. composite or tiled floor

Effect:
High-quality wood types (like Red Cedar) are more expensive, but more durable and require less maintenance. Budget-friendly options are possible, but often last less long.

4. Heating type

Effect:
The choice of type and power of the heater directly impacts the purchase price, installation work, and annual energy consumption.

5. Insulation and Energy Efficiency

What influences the costs:

• Thickness and quality of wall, roof, and floor insulation
• Insulating glass (HR++, triple glazing)
• Extra features such as draft seals or vapor barrier foil

Effect:
A well-insulated sauna requires a higher investment, but significantly reduces energy consumption and increases comfort. Additional cost: approx. €1,000–€3,000 depending on the level.

6. Foundation and placement location

Important factors:

• Type of surface (grass, tiles, sand bed, existing foundation)
• Accessibility of the location for placement
• Need for excavation, drainage, or filling

Effect:
A new concrete foundation or a raised floor costs an average of €1,000–€3,000 extra.
Hard-to-reach locations may require crane rental or additional work.

7. Technical Installation

Components:

• Electrical connection (400V power current)
• Connection to water drain (for steam or outdoor shower)
• Lighting, ventilation, control

Effect:
A complete technical installation costs an average of €1,500–€3,500, depending on complexity and local infrastructure.

8. Finishing and extra features

Optional extensions:

• Canopy, lounge terrace, changing room
• Plunge pool or outdoor shower
• LED lighting, home automation, Bluetooth audio
• Panoramic windows, automatic operation

Effect:
Each extension can range from €500 to over €10,000. In the case of luxury configurations, this can double the total budget.

9. Supplier
and Brand

Differences:

• A-brands offer more guarantees, high-quality finishing, and customisation.
• Lower segments use standard models at sharper prices, but with a more limited lifespan or service.

Effect:
Price differences can amount to 20–40%, depending on reputation, finishing, and aftersales.

10. Season and Market Situation

Timing and Availability:

• More favorable delivery times and prices are often available in spring or autumn.
• Raw material prices, wage inflation, and transport costs will be variable in 2025.

Effect:
A project that is planned smartly can turn out 10–15% cheaper than an urgent request during peak season.

Summary – Top 10 Pricing Factors

The choice of sauna type depends on personal preference, space, budget, health goals, and aesthetics. Each sauna type has its own operation, temperature regime, humidity, and user experience. The most common types are clearly explained below.

1. Finnish Sauna (Traditional Dry Sauna)

Characteristics

• Heat source: electric or wood-burning sauna stove
• Temperature: 70–100 °C
• Humidity: low (5–15%), optionally increased with löyly (steam toss)
• Built from solid woods (e.g. red cedar, aspen, thermo-wood)
• Sessions of 8–15 minutes, followed by cooling

Benefits

• Classic sauna experience
• Suitable for deep cleansing and relaxation
• Infusion rituals possible

Application

• Both indoors and outdoors
• Suitable for intensive use

2. Infrared Sauna

Features

• Heat source: ceramic or magnesium infrared heaters
• Temperature: 30–60 °C
• Humidity: very low
• Direct heat radiation on muscles and joints
• No preheating or pouring required

Advantages

• Fast warm-up
• Energy-efficient and compact
• Very suitable for muscle and joint complaints

Application

• Indoor use, limited space
• Daily and therapeutic use

3. Combi-Sauna (Finnish + Infrared)

Features

• Heat sources: combination of sauna heater and infrared panels
• Temperature: adjustable from 30 to 100 °C
• Flexible humidity
• Digital control with preset programs

Advantages

• Interchangeable use per preference
• Suitable for multiple users with different wishes
• Fully electric, often with light therapy and aroma module

Application

• Luxury bathrooms, indoor or outdoor installation
• Families or wellness professionals

4. Bio Sauna (Mildly humid)

Features

• Heat source: Bio sauna heater with steam unit
• Temperature: 50–70 °C
• Humidity: increased (30–50%)
• Combined effect of heat and moisture, gentler than Finnish sauna

Advantages

• Less strain on the heart and blood vessels
• Promotes skin cleansing and respiration
• Ideal for relaxation with fragrances

Application

• Indoors, often in wellness bathrooms or spas

5. Steam Cabin (Hammam / steam bath)

Features

• Heat source: steam generator
• Temperature: 40–50 °C
• Humidity: 100%
• Tile or acrylic finish required, fully waterproof

Advantages

• Cleansing effect on skin and airways
• Fragrance and light therapy possible
• Seated or lying down use

Application

• Indoor installation
• Suitable for users who prefer moist heat

6. Outdoor Sauna

Features

• Freestanding sauna in the garden or under a canopy
• Traditional: Finnish sauna, sometimes with a wood-burning stove
• Variations: barrel sauna, log cabin sauna, modern prefab
• Often includes a plunge pool or terrace

Advantages

• Strong outdoor experience
• Great freedom of design and customization
• Suitable for use in all seasons

Application

• Luxury gardens, holiday homes, outdoor wellness

7. Mobile Sauna (movable)

Features

• Compact sauna on a trailer or movable module
• Often wood-fired
• Suitable for temporary use or events

Advantages

• Flexibly deployable
• No fixed installation required
• Interesting for rental or temporary wellness projects

Application

• Outdoor locations, recreation, temporary wellness facility

Summary Comparison Table

The right size for an outdoor sauna depends on the number of users, the desired comfort level, the available space in the garden, and the type of use (individual, family, business, or recreational). Outdoor saunas are available in fixed standard dimensions or fully custom-made.

1. Standard Sizes Outdoor Saunas

Note: For outdoor models, additional space will be added here for the roof overhang, chimney, steps, or canopy.

2. Additional space allocation

Many outdoor saunas are supplied or designed with additional amenities. This affects the required floor area:

3. Advice per user situation

4. Installation Considerations

• Access & Clearance: Allow at least 80 cm of free space for access and maintenance.
• Roof Overhang / Rain Protection: Add approx. 20–40 cm to the total dimensions for the roof edge or canopy.
• Foundation: Ensure a sturdy, level base of at least the same size as the full external dimensions.
• Distance to Property Line: Consider municipal regulations, usually a minimum of 1 meter from the property boundary.

5. Summary

• Outdoor saunas start at approximately 1.5 x 1.5 meters for basic use and go up to 3 x 3 meters or larger for group use or wellness projects.
• Including a canopy and extra features, 6–12 m² (or more) is recommended for a complete outdoor sauna setup.
• The choice of the right size depends on the number of users, the frequency of use, the garden layout, and the desired future expansion options.

An outdoor sauna with a canopy combines the functional benefits of a full-fledged sauna room with the comfort of a protected outdoor environment. This combination forms a complete wellness solution for year-round use – suitable for relaxation, cooling off, changing room, or an extra outdoor seating area.

1. Description & Construction

An outdoor sauna with a canopy typically consists of:

• Sauna area: Fully insulated cabin in wood construction, equipped with an electric or wood-burning stove, benches, ventilation and lighting.
• Canopy: Attached or integrated canopy area on one or more sides of the sauna, optional with side panels, glass walls or sliding doors.
• Application area under the canopy:
  – Cooling-down area with plunge pool or shower
  – Lounge area with sun loungers or benches
  – Changing room or storage area

2. Features

3. Optional
Extensions

4. Application & Benefits

• Comfortable in every season: Also usable in rain or cold thanks to the covered space.
• Functional transition between sauna and garden, pool or jacuzzi.
• Protection of sauna entrance and users from direct weather influences.
• Spatial aesthetics: visual integration of the wellness zone into garden design.

5. Placement Requirements

6. Cost Estimate (2025)

Prices include sauna construction, assembly, roof covering, standard lighting and stove, excluding groundwork, electricity connection and optional accessories.

7. Project Approach

1. Intake & Site Measurements
2. Custom Design with Visualization
3. Permit Check if Necessary
4. Production / Prefab Preparation
5. Placement and connection (1–2 weeks)
6. Testing, delivery and user instruction

In addition to the standard installations of saunas, jacuzzis, swimming pools and other wellness facilities, there are numerous extra options available that contribute to greater comfort, safety, energy efficiency and aesthetics. These extensions can be tailored to the installation and user's wishes, and increase both the use value and the lifespan of the wellness area.

The overview below provides a clear picture of the most popular expansion options in 2025.

1. Operation & Home Automation

Smart Control

• Control of sauna, jacuzzi, or swimming pool via smartphone, tablet, or wall display.
• Programmable schedules, temperature settings, and maintenance reminders.
• Integration with home automation systems (KNX, Zigbee, Z-Wave, or Homey).

Sensors and detectors

• Temperature, humidity, and CO₂ sensors for climate control.
• Overflow protection, leak detection, and automatic shutdown in case of malfunctions.
• Motion sensors for automatic lighting.

2. Lighting & Atmosphere

LED Lighting

• Recessed lighting in walls, floors, stairs and ceilings.
• RGB color programs for chromotherapy in sauna, jacuzzi and steam room.
• Dimmable zones per room or activity.

Outdoor Lighting

• Atmospheric lighting in the garden, under decking or around swimming pool edges.
• Motion-controlled or integrated into a home automation system.
• Resistant to moisture, heat and UV radiation.

3. Audiovisual Integration

Sound Systems

• Built-in speakers with Bluetooth or Wi-Fi control.
• Multiroom installations, also suitable for outdoor spaces.
• Control via app or integrated into existing systems.

Screens

• Waterproof screens for sauna, steam cabin or relaxation room.
• Streaming services and smart functions via Wi-Fi.

4. Scent and air experience

Aromatherapy

• Scent diffusers based on essential oils (for sauna, steam, shower).
• Automatic nebulizers with timer or sensor control.
• Refillable fragrance modules for changing programs (e.g. eucalyptus, lavender, citrus).

Air quality

• CO₂-controlled ventilation in wellness bathrooms or indoor swimming pools.
• Humidification or dehumidification via heat recovery systems (HRV).
• Quiet ventilation system with high efficiency.

5. Insulation and energy saving

Heat retention

• Insulating covers for hot tubs, jacuzzis and swimming pools.
• Extra insulation layers in saunas or technical rooms.
• Automatic roller shutter or slatted cover for swimming pools.

Energy-efficient technology

• Inverter heat pumps with COP > 6.
• Solar collectors or solar water heaters for preheating swimming pool or shower water.
• Smart switches for consumption moments (e.g. off-peak hours).

6. Water treatment and ease of maintenance

Automated systems

• Chlorine, salt or UV dosing based on sensor measurement.
• PH control and turbidity monitoring via digital control system.
• Filter cleaning with automatic flushing.

Maintenance packages

• Robotic vacuum cleaners for pool or pond bottom.
• Annual technical inspection by an approved installer.
• Supply of maintenance products and spare parts.

7. Wellness furniture and furnishings

Sunbeds & relaxation furniture

• Water-resistant sun loungers, benches and relaxation furniture.
• Infrared-heated benches for relaxation areas.
• Towel racks, storage space and custom lockers.

Accessories

• Design towel hooks, aroma holders, wooden buckets and spoons.
• Bathrobes, slippers and linen packages in hotel quality.
• Scent stones, infusion concentrates and sauna hourglasses.

8. Security and privacy

Access and closure

• Smart access control for outdoor spaces (keyless, code or app).
• Lockable hatches or panels for jacuzzis and outdoor saunas.
• Integrated sun protection or privacy glass.

Camera surveillance and alarm

• Outdoor or dome cameras (optional with motion detection).
• Water and power alarm with notification function on smartphone.

Price indication (2025)

These extra options can be fully integrated into new installations or – where technically possible – as an extension to existing facilities. We are happy to advise on compatibility, required connections and optimal placement per situation.

An outdoor sauna offers a unique combination of relaxation, comfort, and nature experience. Unlike an indoor sauna, the outdoor sauna is a standalone, fully equipped wellness facility that can be used at any time of the year. It is a valuable addition to any garden or outdoor space – both functionally and aesthetically.

The overview below lists the main advantages.

1. Outdoor wellness experience

• Direct cooling outdoors
  After a sauna session, cooling down is essential. Outdoors, fresh air provides natural and effective cooling, without additional facilities.
• Connection with nature
  Use in a green garden, by a pond, or with a view of the landscape enhances relaxation and tranquility.
• Unique atmosphere per season
  Summer use with open doors, winter use in frost or snow – each season offers a different wellness experience.

2. Space-saving

• No indoor space required
  The sauna is placed entirely outdoors, meaning no loss of living space or bathroom layout.
• Free choice of placement
  Can be flexibly positioned in the garden, against a shed, under a canopy, or freestanding with a view.

3. Aesthetically and architecturally attractive

• Custom Design
  From rustic log cabin style to sleek modern with panoramic glazing – the outdoor sauna can be fully tailored to the garden design.
• Valuable addition to the outdoor area
  Combinable with decking, terrace, jacuzzi or swimming pool as part of a complete wellness zone.

4. Suitable for intensive use

• Full-fledged sauna room
  Outdoor saunas are usually larger and more robust than indoor saunas, with more seating and lounging space.
• Better insulated for harsh conditions
  Modern outdoor saunas are fully thermally insulated and resistant to frost, moisture, and temperature fluctuations.

5. Privacy and Tranquility

• Separate wellness area outside the house
  The sauna is a self-contained space, separate from daily household activities – without distractions.
• Private access and moments of peace
  Suitable for one or more users without disturbing others in the house.

6. Versatility in use

• Expandable with extra functions
  For example, with a canopy, changing room, plunge pool, outdoor shower, lounge terrace, or storage space.
• Suitable for multiple users at the same time
  Larger models offer space for 4–6 people or more, ideal for families or guests.

7. Energy Efficiency

• Fast warm-up due to compact construction
  Modern insulation materials ensure rapid heat build-up and minimal heat loss.
• Suitable for connection to renewable energy sources
  For example, in combination with solar panels or a heat pump for power supply to the electric heater.

8. Increase in property value

• Popular and distinctive addition when selling
  A high-quality outdoor sauna enhances the appeal and functional value of the property.
• Highly valued for rental or recreational use
  Interesting for holiday homes, B&Bs, or exclusive gardens with wellness facilities.

An outdoor sauna is a valuable investment in relaxation, health and living comfort. At the same time, there are various possibilities to save costs in a smart and responsible way – both when purchasing and during daily use. The tips below are aimed at realizing long-term cost savings without compromising on quality or functionality.

1. Choose the right size

• Don't buy larger than necessary
  A compact sauna uses less energy and requires fewer building materials. For individual use or small households, a model for 2 to 3 people is often sufficient.
• Avoid unused interior space
  Smart layouts with efficient benches save space and heating time.

2. Compare heating types

• Electric heater
  Efficient and programmable. Choose a heater with customized power (e.g., 6 kW for compact models) to avoid unnecessary energy consumption.
• Wood-burning stove
  Economical to use for regular sauna sessions, especially in rural areas with access to own firewood. No electricity consumption during heating.
• Do not choose an oversized installation
  An overly heavy heater results in higher purchase costs and unnecessary power consumption.

3. Invest in good insulation

• Well-insulated walls and roof
  Significantly reduce energy consumption because heat is better retained.
• Insulating glass in windows
  If possible, use double glazing or HR++ glass for panorama versions.
• Insulated floor or floor mat
  Prevents cold bridges and heat loss through the underside of the sauna.

4. Automate usage

• Use a timer or app control
  Program the sauna in advance and avoid unnecessary warm-up time.
• Smart thermostats
  Set a maximum temperature or usage time for more efficient consumption.
• Short warm-up moments
  Use the sauna efficiently: 10–15 minutes is often sufficient per session.

5. Building permit-free construction (if possible)

• Place within the conditions of permit-free construction
  A sauna under 3 meters high, in the backyard and no larger than 30 m² is often permit-free. This saves on application costs, fees and delays in execution.
• Inform in advance at the municipality or the Omgevingsloket
  Avoid unforeseen costs for permit, advice or adjustments.

6. Choose a standard model or construction kit

• Prefab models are more affordable
  They are often quicker to install and cheaper than custom-made constructions.
• Self-build or assembly assistance
  Ready-made construction kits are available for handy DIY enthusiasts, possibly with partial guidance from an installer.

7. Save in the long term with sustainable technology

• Use solar panels for power supply
  Combine with electric heater or lighting to utilize self-generated energy.
• LED lighting
  Choose energy-efficient and low-maintenance fixtures.
• Longer lifespan through maintenance
  Regular cleaning of the stove, ventilation and wood extends the lifespan and prevents costly repairs.

8. Reuse existing facilities

• Use existing canopy or terrace
  By placing the sauna under an existing canopy, you save on construction costs.
• Connect to existing electricity or walkways
  Saves on digging, cables and connection costs.

9. Ask about sales or showroom models

• Manufacturers and installers sometimes offer discounts on demo models
  Completely new saunas with minor aesthetic imperfections are often 10–20% cheaper.
• Discount on combination products
  Combine a sauna with an outdoor shower or plunge pool for a package price.

10. Perform maintenance yourself where possible

• Annual cleaning of interior upholstery and ventilation
  Reduce wear and increase energy efficiency.
• Replace simple parts yourself
  Such as lighting, stones or wooden railings, without hiring a specialist.

Summary: Ten saving tips in one overview