- Postcode districts
- LL55
- Nearby
- Bangor, Holyhead and Llandudno
- Guide price
- £4,200–£8,400
- Typical time on site
- 4–8 working days
- Water
- Soft across most of Gwynedd
- Survey
- Free, at your home
What does an en-suite cost in Caernarfon?
In Caernarfon, an en-suite typically costs £4,200–£8,400 including VAT, based on Wales prices. Prices in Wales run at about 7% below the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Tiling, lighting and extractor fan
Upgrade
- Walk-in shower or larger tray
New en-suite
- New stud walls, drainage and pump if needed
Guide prices for Caernarfon including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Caernarfon
As well as Caernarfon itself (LL55), we survey in Bangor, Holyhead and Llandudno.
Caernarfon gets the same process as anywhere else: a free survey at your home and a written, itemised quote. If you live in a Caernarfon flat, check the lease before planning a new en-suite, as freeholder consent is often needed for new drainage and vents. If your Caernarfon en-suite fan just blows into the loft, we can duct it properly to outside as part of the refit.
Most of Gwynedd is supplied with soft water. If that holds for your street in Caernarfon, limescale on shower glass and heads builds up slowly and a squeegee after use is usually enough. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A door that suits a tight space: inward, outward, sliding or a pocket door
- An extractor fan ducted to outside, sized to the room and wired with an overrun timer or humidistat
- A short-projection or wall-hung WC and a compact basin chosen to keep the floor clear
- Tiling, silicone, testing and making good on the bedroom side of any new walls
Decisions to make first
Shower size
A 900 mm square tray is a comfortable minimum for an enclosure. In a long, narrow room, a 1200 by 800 mm walk-in tray with one glass panel feels far more generous.
Exposed or concealed valve
An exposed bar valve is quicker to fit and easy to service. A concealed valve looks cleaner but sits inside the wall, so plan how it will be reached for repairs.
Rules that apply in Wales
Wales has its own Part F with similar extract rates and its own Part P, which makes more electrical work notifiable than in England. The drainage for a new en-suite falls under Part H. The work should be notified, and you should receive the certificates at the end.

