What should you budget for a bathroom or en-suite?
Useful starting ranges, together with the practical reasons two similar-looking rooms can cost very different amounts to build.
Price guide
Realistic starting ranges
These are broad planning figures, not fixed quotes. London access, hidden condition, specification and structural or drainage work can move the final price.
| Project | Typical planning range | What changes the cost |
|---|---|---|
| Complete bathroom renovation | From around £9,000+ | Room size, preparation, tiling, products, access and layout changes |
| New en-suite | Often £12,000-£18,000+ | Drainage route, partitions, ventilation, room changes and finish |
| Premium or complex project | £18,000-£30,000+ | Specification, structural work, bespoke items and difficult access |
| Cloakroom / downstairs WC | Survey required | Drainage, ventilation, space, finishes and whether the room exists |
| Selected smaller works | Item-specific | Product, access, condition and alterations required |
New en-suite value
A new private bathroom is a building project.
The cost is not just the shower, toilet and basin. It can include walls, doors, drainage, water supplies, ventilation, electrics, waterproofing, tiling, heating, flooring and making good the bedroom.
Read the en-suite cost guideSpare room income
Compare build cost with realistic local rent.
Use our dedicated page to understand the possible rental appeal, your local comparison and a simple payback illustration without treating it as a guarantee.
Explore spare-room potentialQuestions
Price questions
Why can’t you give an exact online price?+
The same products can cost very different amounts to install depending on drainage, preparation, access, floor condition, electrical work and the property itself.
Are products included?+
The quotation will state what is supplied, what is an allowance and what is customer supplied. We can work with products you have chosen after checking suitability.
Do you charge for a home survey?+
Initial local home surveys are offered free for suitable planned projects. Wider regional surveys may be discussed depending on distance and project size.
Get a project-specific quotation
A proper quotation follows the room survey and agreement on the scope, products and finish.