- Postcode districts
- NN1, NN2, NN3, NN4, NN7
- Nearby
- Newport Pagnell, Milton Keynes and Rugby
- Guide price
- £4,300–£8,600
- Typical time on site
- 4–8 working days
- Water
- Hard across most of Northamptonshire
- Survey
- Free, at your home
What does an en-suite cost in Northampton?
Our guide price for an en-suite in Northampton is £4,300–£8,600 including VAT. We adjust the national guide for East Midlands, where prices are typically about 4% below the UK average. 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 Northampton including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Northampton
As well as Northampton itself (NN1, NN2, NN3 and 2 more postcode districts), we survey in Newport Pagnell, Milton Keynes and Rugby.
In a city the size of Northampton, parking and access for a skip are worth sorting before the start date — we will ask at the survey. We quote new en-suites in Northampton only after checking the drainage route on site, so the price reflects the work your house actually needs. If your Northampton home has one bathroom and a good-sized main bedroom, an en-suite is often the change that eases the morning queue.
Supplies across most of Northamptonshire are hard. If your supply in Northampton 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 survey that traces the route from the en-suite to the soil stack and checks the fall the waste pipes would need
- A pumped waste or macerator where gravity drainage is not possible, and only where the house already has a WC on gravity drainage
- An extractor fan ducted to outside, sized to the room and wired with an overrun timer or humidistat
- A shower tray or level-access former, an enclosure or walk-in panel, and a thermostatic valve
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.
Night lighting
A mirror light or low-level LED strip on its own switch lets you use the en-suite at night without the full glare of the ceiling lights.
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.

