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Most plumbing jobs aren’t dramatic — a dripping tap, a running overflow, a stopcock that won’t turn, a leak under the sink. This page covers the everyday fixes that keep a Catford home running, and the bit people get wrong: working out who’s responsible before you pay anyone.
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On this page
The everyday jobs · Catford homes and diagnosis · Who’s responsible in Catford · Where Thames Water’s responsibility starts · Know your stop tap first · Checking a plumber is legit · What it costs in Catford — 2026 · Why verified plumbers · FAQ
The everyday jobs
General plumbing is the long tail of small, useful jobs: a dripping tap (worn washer or cartridge), a toilet that won’t stop running (worn flush valve or float), an overflow trickling outside (a failed float valve in a tank), a stiff or seized stopcock, radiator valves, a new outside tap, an isolation valve on an appliance, resealing a bath or sink, and tracing a small leak before it spreads. None of them are glamorous, but left alone a “minor” running overflow or a weeping joint quietly wastes water and rots a cupboard or a joist. Most are an hour or two of work — the value is in getting them diagnosed correctly rather than guessed. Catford’s hard water is behind a fair share of them: furred tap aerators, scaled toilet fill valves and shower cartridges that stick or drip, so a “faulty” tap or valve is often really limescale.
Catford homes and how faults show up
The same fault presents differently across Catford’s housing. In an older terrace, expect seized stopcocks, stiff old isolation valves and a mix of copper and plastic from past repairs, plus rear-extension pipework that runs long and shallow. In a converted flat, a leak often appears below where it starts, pipe runs are shared, access can be awkward, and who pays depends on tenure — a leaseholder’s own internal pipework versus a communal run that’s the freeholder’s or managing agent’s. In a council or postwar block, communal risers and shared isolation mean the fix may need Lewisham or the managing agent to attend, not a private plumber on one flat. And in the flats above Catford Broadway or Rushey Green shops, a leak can reach the commercial unit below, so act fast.
Good diagnosis is about telling similar faults apart: a toilet that won’t stop running (a worn flush valve or float) is different from one overflowing (isolate it at its valve); a weak tap is usually a blocked aerator or a pressure issue, not a worn cartridge; and a puddle under the sink might be a leak on the pressurised supply (the tap tails or an isolation valve), a waste-side leak (the trap or waste pipe, which only shows when the sink drains), or failed sealant around the sink or worktop — each a different fix. On a first visit, a tap washer, a running overflow, a radiator valve or a re-seal can usually be done there and then; a seized stopcock, a part that has to be ordered, or anything needing communal access will need a return. A good general plumber also knows when to hand over: a hidden leak to leak detection, a persistent blockage to a drainage specialist, anything on the boiler or gas to a Gas Safe engineer, and a burst in the street or a shared-sewer problem to Thames Water.
Replacing a stopcock is a common job in Catford’s older stock. A plumber tests the internal stop tap first (usually under the kitchen sink, and yours to maintain); there’s often an external stop valve at the boundary too. A seized stopcock — the classic “it won’t turn” — sometimes can’t be forced without risking a burst, so it may need the supply isolated externally first; and in a shared supply, isolating can affect neighbours, which needs planning.
Who’s responsible in Catford
Catford is in the London Borough of Lewisham, and who sorts a repair depends on how you hold your home.
Homeowners arrange their own plumber — which is where this directory comes in.
Council tenants report to Lewisham, which brought its housing management back in-house in 2023. Non-emergency repairs go through the housing portal or freephone 0800 028 2028, and emergency repairs are phone-only on the same number, with an out-of-hours service that comes to make the situation safe¹.
Council leaseholders usually arrange repairs inside their own flat — the internal plumbing serving only your home, such as taps, sinks, appliance connections and the pipework within the flat. Lewisham, as freeholder, is responsible for the shared areas of your building and estate, with urgent communal repairs reported on 0800 028 2028⁸ — so a leaking communal riser, a shared waste stack or a structural problem goes to the council, while a fault on your own internal pipework is yours to arrange. Exactly where that line falls is set by your lease.
Private tenants report to the landlord or managing agent first. If the landlord doesn’t act, Lewisham’s guidance is that you can contact its Licensing and Housing Enforcement team on 020 8314 6420 or pshe@lewisham.gov.uk, which will liaise with you and your landlord and can take enforcement action if the landlord fails to comply². That team is based locally, at Laurence House on Catford Road.
Where Thames Water’s responsibility starts
Not every “plumbing” problem is yours to pay for. On the clean-water side, Thames Water owns the mains and the communication pipe up to your boundary, but you own the supply pipe from the boundary into your home — and Thames Water is clear you remain responsible for that supply pipe even where it crosses someone else’s land or the road³. On the waste side, Thames Water owns public sewers under roads and footpaths, and drains shared with neighbours, even under your garden⁴, while pipes within your boundary serving only your home are yours. Knowing the line stops you paying for a repair that isn’t yours.
Know your stop tap first
The single most useful thing in any plumbing emergency is knowing where your stop tap is. Thames Water notes the inside stop valve is usually under the kitchen sink, but can also be in an airing cupboard, under the stairs, near the front door or in a garage or utility room⁵ — and in a shared Catford supply there may be a communal valve where the supply enters the building plus one where it enters your flat. Find and test yours on a calm day; our find your stop tap guide walks through it.
Checking a plumber is legit
For general plumbing, two national checks do the work. For anything touching gas — a boiler, a gas cooker connection — the HSE is clear that anyone working on gas appliances in domestic premises must be Gas Safe registered and competent, and you can verify them with the Check an Engineer service⁶. For work affecting your drinking-water fittings, WaterSafe is the industry-backed directory of approved plumbers trained in the Water Fittings Regulations⁷. Between them they cover the two things you can’t verify by looking at a van.
What general plumbing costs in Catford — 2026
Editorial estimate only — not official pricing, and no substitute for a written quote. Small jobs are often priced as a call-out plus labour.
| Job | Typical range |
|---|---|
| Call-out / first hour | £70–£120 |
| Replace tap washer / cartridge | £70–£150 |
| Fix running overflow / float valve | £80–£180 |
| Replace stopcock / isolation valve | £90–£220 |
| Replace radiator valve | £90–£180 |
| Fit an outside tap | £120–£250 |
| Trace and fix a minor leak | £90–£250 |
| Re-seal bath / sink / worktop | £70–£150 |
Ask for the call-out charge and hourly rate up front — our how to read a plumbing quote guide explains what a fair quote looks like.
Why verified plumbers in Catford
For small jobs, the risk isn’t drama — it’s paying over the odds to someone you can’t check. Every plumber listed here is checked before they appear — identity, insurance and trading presence, with Gas Safe registration where gas work is involved — and re-checked annually. A flat monthly listing fee means no customer-side fee and no pay-to-play ranking. Confirm current registration and insurance on the day; listing checks are administrative and don’t replace your own checks or guarantee workmanship. See how we verify plumbers.
Frequently asked questions
Not an emergency, but worth fixing — it quietly wastes water and the cause (a worn flush valve or float) is a cheap, quick job. If it’s overflowing rather than just running, isolate it at the toilet’s isolation valve.
Lewisham. Non-emergency repairs go through the housing portal or 0800 028 2028; emergencies are phone-only on the same number, 24/7, and they’ll come to make it safe.
Report it to the landlord or agent first. If they don’t act, Lewisham’s Licensing and Housing Enforcement team (020 8314 6420 / pshe@lewisham.gov.uk) can liaise and take enforcement action.
It depends on the pipe. Thames Water owns the mains and communication pipe; you own your supply pipe from the boundary in, even where it runs under the road. Report a road leak to Thames Water and they’ll establish whose it is.
For gas work, verify Gas Safe registration via the Check an Engineer service. For drinking-water fittings, look for WaterSafe approval. And always confirm insurance.
Often not. A weak tap is more often a blocked aerator or a pressure/isolation issue than a worn cartridge. A plumber checks the aerator, the isolation valves and the pressure before replacing parts.
General plumbing across Lewisham — areas we cover
General Plumbing Catford · Lewisham · Forest Hill · Hither Green · Bellingham · Ladywell · Sydenham
Related services in Catford
Kitchen Plumbing · Leak Detection · Emergency Plumber · Boiler Repair
Related guides
Find Your Stop Tap · How to Read a Plumbing Quote · London Plumbing Costs Guide · New Homeowner Plumbing Guide
Source provenance
Guidance on this page is drawn from primary UK sources: the London Borough of Lewisham (council-tenant and leaseholder repair responsibilities, and the private-rented enforcement route), Thames Water (clean-water supply-pipe and wastewater responsibility, and inside stop-valve locations), the HSE (Gas Safe registration requirement and the Check an Engineer service) and WaterSafe (approved-plumber directory). Cost figures are an editorial estimate only, and local observations are editorial context.
Sources & further reading
¹ Lewisham — Request a repair: https://lewisham.gov.uk/myservices/housing/council-tenants/repairs/request-a-repair
² Lewisham — Reporting damp and mould in your home: https://lewisham.gov.uk/myservices/housing/private-tenants-and-landlords/reporting-damp-and-mould-in-your-home
³ Thames Water — Pipe responsibility (leaks): https://www.thameswater.co.uk/help/water-and-waste-help/leaks/pipe-responsibility
⁴ Thames Water — Sewer pipe responsibility: https://www.thameswater.co.uk/help/water-and-waste-help/sewer-flooding/sewer-pipe-responsibility
⁵ Thames Water — Find and use your inside stop valve: https://www.thameswater.co.uk/help/water-and-waste-help/how-to-turn-your-water-on-and-off/how-to-find-and-use-your-inside-stop-valve
⁶ HSE — Check an engineer (Gas Safe register): https://www.hse.gov.uk/gas/gas-safe-register-check.htm
⁷ WaterSafe — Find a local approved plumber: https://www.watersafe.org.uk/
⁸ Lewisham — Leaseholder guide (shared and structural responsibilities; communal repairs): https://lewisham.gov.uk/myservices/housing/leaseholders/new-leaseholders
Last reviewed: July 2026 by Adiel Khan — SFEDI-accredited business advisor, 20+ years’ experience (South East Enterprise Ltd) and operator of VerifiedPlumbers. LinkedIn ↗. This page is checked for compliance and regulatory accuracy against Lewisham Council, Thames Water, HSE and WaterSafe guidance. Source links are provided within the page where relevant.