- Postcode districts
- WD1, WD17, WD18, WD24, WD25
- Nearby
- Bushey, North Watford and Rickmansworth
- Guide price
- £4,800–£9,500
- Typical time on site
- 4–8 working days
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does an en-suite cost in Watford?
As a guide, budget £4,800 to £9,500 including VAT for an en-suite in Watford; your written quote will pin it down. 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.
Refit
- Shower, basin and WC replaced
Upgrade
- Full-height porcelain tiling
New en-suite
- Formed inside an existing bedroom
Guide prices for Watford including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Watford
We work right across Watford — WD1, WD17, WD18 and 2 more postcode districts — and in neighbouring Bushey and North Watford.
Watford has a wide mix of house ages, so the survey is where we spot old lead pipework, weak joists or a tight soil stack. If your Watford en-suite fan just blows into the loft, we can duct it properly to outside as part of the refit. If your Watford home has one bathroom and a good-sized main bedroom, an en-suite is often the change that eases the morning queue.
Water across much of Hertfordshire is very hard. If your supply in Watford is the same, limescale on shower glass and heads is a real issue: easy-clean glass, rub-clean nozzles and a squeegee make a big difference. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A shower tray or level-access former, an enclosure or walk-in panel, and a thermostatic valve
- IP-rated lighting, a shaver socket and the electrics done by a qualified electrician, tested and certified
- Stud walls with acoustic insulation and moisture-resistant board for a new en-suite
- An extractor fan ducted to outside, sized to the room and wired with an overrun timer or humidistat
Decisions to make first
Door type
An outward-opening door frees floor space inside. A sliding pocket door saves space on both sides but needs a stud wall long enough to take the cassette.
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.
Rules that apply in England
In England, a new en-suite brings in Part H for the new connection to the soil stack, Approved Document F for ventilation, at 15 litres per second intermittent or 8 litres per second continuous extract, and Part P for the new circuits. The electrician should be registered with a competent person scheme, or the work notified to building control. On a refit, avoid replacing the fan with a less effective one.

