Typical prices for common plumbing and gas jobs in Croydon and South London — so you know what's fair before you pick up the phone.
Plumbing prices in London are higher than the national average — that's simply the reality of the cost of living and operating a trade in the capital. But within London, there is also a wide spread of what different tradespeople charge for the same job. Knowing the typical range for your area helps you spot a fair quote and identify the outliers at either end.
The prices below are based on typical rates for Croydon and South London in 2024. They are ranges, not fixed tariffs — actual prices vary based on property access, age of existing pipework, whether parts need to be ordered, and how long the job takes on the day.
Most plumbers in South London charge either a fixed price per job or a combination of a call-out fee plus an hourly rate. Understanding both is important before agreeing to any work.
| Charge type | Typical range (Croydon / South London) |
|---|---|
| Call-out / visit fee (daytime, Mon–Sat) | £60–£90 |
| Hourly rate (daytime) | £60–£90/hr |
| Evening / weekend premium | +25–50% |
| Emergency call-out (out of hours) | £100–£150 call-out + hourly |
Many jobs are quoted as a fixed price rather than time-based. A good tradesperson will always give you a fixed price upfront where possible so you know exactly what you are paying.
| Job | Typical price |
|---|---|
| Fix a dripping tap (washer or cartridge replacement) | £80–£150 |
| Replace a tap (supply and fit, customer supplies tap) | £100–£180 |
| Repair a leaking toilet cistern | £80–£150 |
| Replace toilet syphon or fill valve | £80–£130 |
| Replace toilet (customer supplies WC) | £150–£250 |
| Fix a leaking pipe under the sink | £80–£160 |
| Replace stop cock / isolation valve | £100–£180 |
| Unblock a sink or bath | £80–£150 |
| Job | Typical price |
|---|---|
| Annual boiler service | £80–£120 |
| Boiler repair — diagnosis and minor fix | £120–£250 |
| Replace diverter valve (combi boiler) | £180–£350 |
| Replace boiler pump | £200–£350 |
| Replace printed circuit board (PCB) | £250–£500 |
| New combi boiler — supply and fit (mid-range) | £1,800–£2,800 |
| New combi boiler — premium brand (e.g. Worcester Bosch) | £2,200–£3,500 |
| Job | Typical price |
|---|---|
| CP12 gas safety certificate — 1 appliance | £60–£90 |
| CP12 gas safety certificate — 2 appliances | £80–£120 |
| CP12 — 3+ appliances | £100–£150+ |
Landlords in Croydon and South London typically pay around £80–£100 for a standard one or two appliance gas safety certificate. The price includes the inspection and the certificate document, which must be kept on record and provided to tenants within 28 days of issue.
| Job | Typical price |
|---|---|
| Add a single radiator (pipework already accessible) | £200–£400 |
| Replace a radiator (like-for-like) | £150–£300 |
| Power flush (full system) | £300–£500 |
| Replace motorised zone valve | £150–£280 |
| Full central heating installation (3-bed house) | £3,000–£6,000+ |
| Job | Typical price |
|---|---|
| Replace shower unit (like-for-like) | £150–£350 |
| Install a shower tray and enclosure | £400–£800 |
| Full bathroom strip-out and re-fit (customer supplies suite) | £1,500–£3,500 |
| Full bathroom including tiles and sanitary ware | £4,000–£9,000+ |
The ranges above assume reasonably straightforward access. Several factors can push the actual cost towards or beyond the top of any range:
Get at least two written quotes for any job over £300. This benchmarks the market and protects you from outlier pricing. When comparing quotes, check that they are for the same scope of work — a lower quote that excludes materials or assumes you will dispose of the old appliance yourself may not be better value.
Always ask whether VAT is included in the quoted price. Many sole-trader plumbers are not VAT registered (the threshold is £90,000 annual turnover), which can make their prices look cheaper when comparing to VAT-registered companies. Neither is necessarily better — just make sure you are comparing like for like.
Call Nas Plumbing for a free, no-obligation quote. Gas Safe registered, fully insured, clear pricing — based in Croydon and covering all of South London.
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