- Postcode districts
- AL7, AL8
- Nearby
- Hatfield, Hertford and St Albans
- Guide price
- £8,000–£16,000
- Typical time on site
- 8–15 working days
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does a bathroom renovation cost in Welwyn Garden City?
In Welwyn Garden City, a bathroom renovation typically costs £8,000–£16,000 including VAT, based on East of England prices. We adjust the national guide for East of England, where prices are typically about 6% above the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refresh
- Same layout, new suite
Full renovation
- Re-plaster, new pipework and electrics
Structural
- Ventilation and lighting redesigned
Guide prices for Welwyn Garden City including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Welwyn Garden City
In Welwyn Garden City we cover AL7 and AL8; we also cover Hatfield, 2.8 miles away, and Hertford.
In Welwyn Garden City, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. A renovation survey in Welwyn Garden City looks behind the surfaces, at joists, pipework and wiring, before any figure is put on paper. If you have just bought a house in Welwyn Garden City, renovating the bathroom before moving in saves living through the dust.
Supplies across most of Hertfordshire are very hard. We plan easy-clean glass, rimless toilets and finishes that do not show limescale. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- New wiring, lighting, extractor fan and RCD protection, installed and certified by a qualified electrician
- New hot and cold pipework and wastes, with isolation valves to each fitting
- A survey of the structure and services: joists, walls, ceilings, pipework, wastes, wiring and ventilation
- Strip-out back to brick or studwork, with waste taken away by a licensed waste carrier
Decisions to make first
Combining rooms
Taking out the wall between a bathroom and a separate WC gives one larger room, but it is structural work and may need building control.
Pipe material
Copper suits exposed runs and the area near the boiler. Plastic pipe is quicker under floors and inside walls, and long runs need fewer joints.
Rules that apply in England
In England, structural changes, new drainage or a new connection to the soil stack under Part H, and new circuits under Part P can all be building regulations work. A registered electrician can self-certify the electrics; structural and drainage work may need a building notice or a full plans application to building control.

