What does bathroom plumbing work cost in Northamptonshire?
Our guide range in Northamptonshire is £600–£3,800 including VAT. Prices in Northamptonshire run at about 4% below the UK guide, based on East Midlands labour rates.
Like-for-like
- Isolation valves, new tails
Partial re-route
- Waste re-routed
New layout
- WC moved on the soil stack
Guide prices for Northamptonshire including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Northamptonshire?
Most of Northamptonshire has hard water. Taps, plug wastes and toilet pans scale up quickly, so chrome copes better than matt black, and a removable aerator is worth having. Hardness varies street by street, so check the figure for your postcode with your water supplier. Plumbing surveys in Northampton include a look at the existing pipework for lead, corrosion or poor support before we quote.
What the job includes
- Isolation valves on every fitting, so taps, cisterns and valves can be serviced without draining the system
- The WC connected to the soil stack, or a new branch where the WC is moving
- A pressure test of new pipework before walls are closed in and floors go down
- Shower pumps on gravity systems, and macerators or pumped wastes where gravity drainage cannot reach
- Basin, bath and shower wastes sized and laid to a steady fall, with traps that hold their water seal
- New hot and cold pipework in copper or plastic, properly clipped, and insulated where it runs through cold spaces
Decisions to make first
Concealed or exposed valves
Concealed shower valves look neater but need an access route for servicing. Exposed bar valves are easier to reach and replace.
Shower supply
Combi boilers and unvented cylinders give mains pressure. A gravity system with a cold tank may need a pump, but a pump must never be connected to the mains.
Gravity or pumped waste
Gravity drainage is always the first choice. A shower waste pump or macerator solves a run that cannot fall, but adds noise, a power supply and servicing.
Copper or plastic
Copper is rigid and suits pipes on show or near the boiler. Plastic is quicker under floors and inside walls, and long runs need fewer joints.
Rules that apply in England
New WCs, taps, showers and valves must meet the water fittings rules where you live: a maximum 6-litre flush for new WCs, backflow protection, and no pump connected directly to the mains supply, because shower pumps are only for gravity systems with a cold tank. Unvented hot-water cylinders must be installed by a G3-qualified installer, and any work on a gas boiler by a Gas Safe registered engineer.
In England, the Water Supply (Water Fittings) Regulations 1999 apply. New drainage or a new connection to the soil stack can be building regulations work under Part H, and a macerator or pumped WC is acceptable only where there is also a WC on gravity drainage elsewhere in the home.

