Dreaming of your own Steam Room but worried it’ll cost more than a holiday in Ibiza?
Short answer: A Steam Bath can cost anywhere from £1,500 to £15,000+.
From budget builds to spa-like luxury, we break down every cost so you don’t get steamed by surprise. Keep reading to budget smart!

Understanding the Average Steam Room Cost
What is the Typical Price Range for a Home Steam Room?
In the UK, a home steam room can cost between £3,500 and £15,000, depending on several factors.
This includes whether it’s prefabricated, custom-built, or added during a bathroom renovation.
Smaller portable steam showers might only cost £1,500, while a luxury tiled steam bath with extras can exceed £15,000.
Factors Influencing the Base Cost
Several elements affect the base cost:
-
Size – Larger steam rooms need more materials and stronger generators
-
Type – Portable or prefab options are cheaper than custom builds
-
Location – Converting a bathroom is easier than building one outdoors
-
Materials – Tile, stone, glass, and waterproofing layers all vary in price
These decisions make a big difference to your total steam room budget.
Detailed Breakdown of Steam Room Installation Costs
Steam Generator Cost
Different kW Options and Their Price Ranges
The steam generator is a key component. Its power rating (kW) must match your room size.
Generator Size (kW) | Room Size (m³) | Estimated Cost (UK) |
---|---|---|
4–6 kW | Small (1–3 m³) | £500 – £900 |
7–9 kW | Medium (4–7 m³) | £900 – £1,500 |
10+ kW | Large (8+ m³) | £1,500 – £2,000+ |
Larger rooms need more powerful (and pricier) systems.
Enclosure and Materials Cost
Glass, Ceramic Tile, Wood, Waterproofing Materials
The materials you choose shape both the look and cost:
-
Glass doors/panels: £800 – £2,500 depending on design
-
Tiling (walls, floors, ceiling): £1,500 – £5,000
-
Waterproof membranes: Around £300 – £700
-
Wood (like cedar): More common in saunas than steam rooms
Using premium finishes like marble or stone increases cost significantly.
Labour Costs
Plumbers, Electricians, Tilers, General Contractors
Fitting a steam room involves a few trades:
-
Plumber: £300 – £800
-
Electrician: £400 – £1,000 depending on wiring needs
-
Tiler: £600 – £2,500 based on materials and coverage
-
Installer or contractor: £500 – £1,500 for full coordination
Costs vary by location and scope of the project.
Additional Features and Add-Ons

Aromatherapy Pumps, Sound Systems, Lighting, Seating, Rain Systems, Control Panels
Optional upgrades can enhance your steam room experience:
-
Aromatherapy pump: £100 – £400
-
LED lighting: £100 – £300
-
Bluetooth sound system: £200 – £500
-
Custom seating: £500 – £1,000
-
Rain shower head: £100 – £300
-
Digital control panel: £150 – £500
Pick what suits your budget and lifestyle.
Ongoing Costs and Maintenance
Running Costs
Electricity and Water Usage
Steam generators use electricity and a small amount of water per session.
Most UK homeowners spend £0.50 to £1.50 per use. If used regularly, your monthly cost may increase by £10–£30.
Water usage is minimal but should still be considered.
Regular Maintenance and Cleaning
Preventing Mould and Mildew, Annual Servicing
Steam rooms need proper care to stay clean and safe:
-
Wipe down surfaces after each session
-
Leave the door ajar to let moisture escape
-
Descale the generator every 6–12 months
-
Get a professional service once a year (around £100 – £200)
Good habits prevent mould, mildew, and costly repairs.
Potential Repair Costs
Even with upkeep, occasional repairs may be needed:
-
Generator replacement: £500 – £2,000
-
Tile or grout repairs: £100 – £500
-
Door or seal fixes: £100 – £300
It’s wise to set aside a small repair fund annually.
Steam Room vs. Sauna: A Cost Comparison
Initial Installation Cost Comparison
Type | Installation Cost Range (UK) |
---|---|
Steam Room | £3,500 – £15,000+ |
Traditional Sauna | £2,500 – £10,000 |
Infrared Sauna | £1,500 – £6,000 |
Steam Shower Unit | £1,200 – £4,000 |
Steam rooms tend to cost more due to waterproofing and generator systems.
Operating and Maintenance Cost Comparison
-
Steam Room: Higher electricity usage and moisture-related upkeep
-
Sauna: Less moisture, lower running cost, simpler cleaning
-
Infrared Sauna: Most energy efficient and lowest maintenance
Your choice may depend on usage habits and maintenance preference.
Is a Home Steam Room Worth the Investment?
Benefits of Installing a Steam Room
Health Benefits, Relaxation, Stress Relief
Steam rooms offer more than just heat. They:
-
Open pores and support skin health
-
Help reduce stress and promote relaxation
-
May ease sore muscles and respiratory tension
-
Add long-term value and luxury to your home
Many see them as a wellness investment.
Considerations Before Buying or Building
DIY vs. Professional Installation, Space Requirements
Takeaways
-
Home steam rooms typically cost £3,500–£15,000+ in the UK
-
Size, materials, and extras all affect the final price
-
Ongoing costs include energy, maintenance, and occasional repairs
-
Steam rooms cost more than saunas, but offer unique spa benefits
-
Plan carefully and set a realistic budget for the best outcome