Question 1

How much does kitchen plumbing cost in London?

Accepted Answer

Individual kitchen plumbing jobs in London cost: kitchen tap replacement £85–£150, kitchen sink installation £120–£280 (including fitting waste and supply connections), dishwasher plumbing connection £95–£150, boiling water tap installation £180–£350, waste disposal unit connection £95–£150. A full kitchen refit plumbing package (all of the above, new pipe runs to new kitchen layout) costs £600–£2,500 depending on the extent of rerouting.

Question 2

Can I connect my own dishwasher in London?

Accepted Answer

Connecting a dishwasher to an existing kitchen plumbing setup (hot or cold supply, and existing dishwasher waste connection) is not notifiable work and can be done by a competent homeowner. However, if you need a new isolation valve, a new waste connection into the trap or standpipe, or the dishwasher is being installed in a new position with no existing supply, we recommend professional connection to ensure correct waste trap height, prevent siphoning, and avoid leaks that can damage kitchen units.

Question 3

Why does my kitchen sink drain slowly in London?

Accepted Answer

London kitchen sink blockages are almost always caused by fat, oil, and grease (FOG) solidifying in the waste pipe — London's hard water causes this to occur faster than in softer-water areas as limescale binds to the grease coating the pipe walls. First attempt: pour boiling water down the sink, then use a plunger. If that fails, the P-trap under the sink is likely blocked — unscrew the trap, clear it, and reassemble. Persistent slow drainage indicates a blockage further down the pipe, requiring a drain jetter.

Question 4

Do I need a plumber to install a kitchen sink in London?

Accepted Answer

For a like-for-like kitchen sink replacement (same position, same supply connections, same waste outlet) in a London property, a competent homeowner can do this. However, if you're changing the sink position, adding a new waste outlet, installing a boiling water tap (which requires additional cold supply and waste connections), or the supply pipes are old copper or the waste is cast iron (common in London Victorian properties), professional plumbing is advisable. We handle all kitchen sink installations same day.

Question 5

What is a boiling water tap and is it worth it?

Accepted Answer

A boiling water tap (Quooker, InSinkErator, Fohen) delivers instant boiling, hot, and cold water from a single tap. In London they're increasingly popular in kitchen refits. The tap connects to a small tank unit under the sink that keeps water at 100°C. Installation requires: cold supply connection, waste for the tank, and an electrical connection (fused spur). The plumbing element costs £180–£350; electrical connection is separate. They save energy versus a kettle for frequent tea and coffee use.

Question 6

My kitchen waste pipe smells in the summer — why?

Accepted Answer

Summer kitchen waste smells in London properties are almost always from the P-trap drying out (if the sink is used infrequently) or from the waste pipe running through a warm under-sink cupboard allowing FOG deposits to off-gas. Fix: run water through the sink weekly to keep the trap filled. Also check the dishwasher drain connection — a direct connection without an air gap or spigot in the waste trap allows odour from the main waste to enter the dishwasher and kitchen. We fit anti-syphon valves and correct waste connections as standard.

Job	Time	Price
Kitchen tap replacement (monobloc)	30–60 min	£85–£150 inc. fitting
Kitchen sink replacement (same position)	1–2 hrs	£120–£220 inc. waste
Kitchen sink installation (new position)	2–4 hrs	£220–£450 inc. new pipe run
Dishwasher plumbing connection	45–90 min	£95–£150 inc. isolation valve
Boiling water tap plumbing (no electrics)	1–2 hrs	£180–£350 inc. tank fitting
Waste disposal unit plumbing connection	45–75 min	£95–£150 inc. waste trap
Kitchen sink blockage clear	30–60 min	£65–£120
Under-sink isolation valve fitting	30–45 min	£65–£95 per valve

Kitchen Plumbing London

Kitchen Plumbing Services

Kitchen Tap Replacement

Kitchen Sink Installation

Dishwasher Connection

Boiling Water Tap

Waste Disposal Unit

Kitchen Refit Plumbing

Kitchen Plumbing Prices — London 2026

Kitchen Plumbing Across All London Boroughs

Kitchen Plumbing FAQs

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