Outside tap installation in London
An outside tap only takes a couple of hours to fit, and it is one of the more genuinely useful additions you can make to a house. Doing it properly means three things: a check valve so garden water can never get drawn back into the drinking supply, an isolation valve inside the house so it can be shut off and drained every winter, and a tidy run of pipe through the wall. Ninja Plumbers fits all three as standard, not as extras.
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- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
- Workmanship guaranteed
Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825
Get a price for outside tap installation
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What's included
- New outside tap fitted, front or rear
- Double check valve to meet water regulations
- Isolation valve inside for winter shut-off
- Frost-proof taps where the run is exposed
- Garden and patio standpipes further from the house
- Replacing leaking or seized existing taps
Worth knowing first
A bit of this might save you from needing a callout at all — we'd rather you knew it upfront.
A check valve is a legal requirement, not an upsell
Water regulations require backflow protection on an outside tap, because a hose left in a water butt or a bucket of garden chemicals can otherwise siphon back into the drinking supply. Any tap fitted without one is not compliant.
Turn it off and drain it every winter
Shut the isolation valve indoors and leave the outside tap itself open through the cold months. Any water left standing in the exposed section will freeze, expand and split the pipe — and that damage usually only shows up behind the wall come spring.
Getting through the wall is the job
The tap itself is quick. The core drill through a solid wall, in the right place, missing the cables and the pipework on the other side, is the part that takes the care.
Flats and leaseholds may need permission
Drilling through an external wall in a leasehold flat, or on a listed or conservation-area property, may need the freeholder’s or the council’s consent. Worth a check before we come out.
Common questions
Do I need permission to have one fitted?
In a freehold house, normally not. In a leasehold flat, or a listed or conservation-area building, check with the freeholder or the council first — it is drilling through the external wall that needs the consent.
Can it feed a hose reel or an irrigation system?
Yes. Tell us what it is feeding, because a permanently connected irrigation system needs a higher level of backflow protection than a hose used occasionally.
Will it freeze in winter?
Not if it is isolated and drained, which is what the inside valve is for. Frost-proof taps add more protection where the run is particularly exposed.
Can the tap go at the far end of the garden?
Yes, fitted as a standpipe fed by a buried pipe run. It works out a bigger job than a tap mounted straight on the house wall, mainly because of the trenching and getting the pipe below frost depth, but it is a common request and one Ninja Plumbers handles regularly.
Part of our water supply & treatment work
If it turns out to be a repair job rather than a new install, this is where that's covered.
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General Plumbing
Taps, toilets, radiators and pipework. The jobs that never quite get done.
More on General Plumbing -
Emergency Plumbing
Burst pipes, major leaks and no water. We take calls around the clock and get an engineer moving.
More on Emergency Plumbing
Other appliance work
Need outside tap installation in London?
Let us know what’s going on and whereabouts you are, and we’ll give you a price before any work starts.