We surveyed recommended plumbers to find out how much you should spend on 12 common jobs and how long they should take to complete.
We asked Which? Local recommended plumbers to complete a survey about the cost and completion time for 12 standard plumbing jobs.
Armed with this information, you'll know what questions to ask, roughly what price you can expect to pay and how long jobs should take when hiring a plumber.
Plumbing prices and completion times
All of our prices include labour and materials but exclude VAT.
|Job||Details||Typical price quoted||Price range||Typical time to complete job|
|Survey conducted in July 2012|
|Fit a new pedestal basin||Remove and dispose of old basin. Install a new basin in the same position, assuming that no new pipework is needed. Customer supplying own basin.||£100||£80-£140||2–4 hours|
|Fit a new toilet||Remove and dispose of old toilet. Install a new toilet in the same position, assuming that no new pipework is needed. Customer supplying own toilet.||£115||£80-£150||2–4 hours|
|Fit a new bath||Remove and dispose of old bath. Install a new bath in the same position. Customer supplying own bath.||£185||£150-£249||3–6 hours|
|Replace kitchen mixer tap||Remove old tap. Supply and fit a standard chrome mixer tap.||£120||£75-£150||1–2 hours|
|Replace faulty ball valve in toilet cistern||-||£63||£55-£75||1 hour|
|Fix leaky kitchen tap||To fix a standard mixer tap that is dripping constantly.||£50||£45-£60||1 hour|
|Install outside tap||Exterior wall behind kitchen sink. ||£95||£80-£120||1–2 hours|
|Fix burst water pipe||Assuming pipes are easily accessible and call-out to an emergency. Includes call-out fee, labour and materials.||£90||£70-£120||1–2 hours|
|Fix/unblock toilet||Includes call-out fee, labour and materials.||£80||£60-£90||1–2 hours|
|Power flush standard gas central heating system||Three-bed semi with 10 radiators. Include labour and all chemicals and equipment needed.||£370||£350-£450||1 day|
|Replace a standard cold water tank||In an average three-bed semi-detached house. Assuming replacing like with like. Includes cost of labour and materials.||£250||£200-£350||0.5–1 day|
|Replace a standard hot water tank||In an average three-bed semi-detached house. Assuming replacing like with like. Includes cost of labour and materials.||£460||£395-£550||0.5–1 day|
Plumbing jobs: trader tips
In addition to the pricing and completion time information, our recommended plumbers also shared some helpful advice.
In July 2012, we sent a survey to all Which? Local traders in the Plumbers category with a rating of three stars or more and an email address.
151 plumbers responded to the survey. Using their experience and expertise, they answered questions about the cost of popular plumbing jobs, and how long they should take to complete.
Read more about the methodology
Job: fit a new bath
It's possible that tiles around the bath could be damaged when the old bath is removed. If tiling needs to be repaired or replaced then this job could take longer and cost more.
Job: fix burst water pipe
If you are unlucky enough to experience this problem, keep your fingers crossed that your pipes burst during working hours. Some plumbers don't offer a 24-hour service. Others charge more (often double) to visit outside of normal working hours.
Job: powerflush standard gas central heating system
Some unscrupulous traders will have you believe that a power flush cures everything! It's not always the answer. Power flushing is good for removing sludge that has built up throughout the central heating system. But, if there's just one blockage, the trader should be able to remove it quickly and easily.
The time taken to perform a power flush depends on how dirty the system is. But a typical power flush should take around one day. If a trader says they can do it in an hour or two, be wary.