Exact cost bands are withheld pending a dated sample of UK quotations with clearly normalised inclusions and VAT treatment.
Installation costs depend heavily on the site and package. Use a measured scope and local quotations rather than a national average that may exclude the work your garden needs.
Break the job into packages
List survey, access preparation, groundworks, base, delivery, assembly, electrical or fuel work, flue and ventilation work, commissioning, landscaping repairs and waste removal.
Identify interfaces
Write down who supplies dimensions, checks the base, unloads, makes penetrations, connects controls and signs off the finished installation.
Compare risk as well as price
Check insurance, relevant competence, warranty responsibility, change-control terms, payment stages and what happens if site conditions differ.
Frequently asked questions
Is sauna installation included in the product price?
Sometimes, but never assume it. Ask for a written inclusions and exclusions schedule covering delivery, assembly, base and specialist connections.