Starter guide
How to start a plumbing business
Water problems don’t wait for business hours, which is why plumbing rewards speed and reliability more than almost any other trade. Once the qualification is sorted, the business comes down to pricing emergencies fairly and getting invoices out before the memory of the job fades.
The condensed steps
- Pass whatever licensing exams your state or council sets.
- Get a policy running before you touch a single pipe.
- Charge a call-out fee, then price the fix separately.
- Become the plumber a landlord calls without shopping around.
- Bill fittings, parts, and labour on their own lines every time.
What the first year costs
Costs swing widely by state and area, driven mostly by licensing, insurance, and whether you buy or lease the van and tools.
| Spend | Rough amount |
|---|---|
| Qualification and licensing fees | Varies by area |
| Van and tools | £3,200–£11,500 |
| Liability cover for water and gas work | ~£190–£390 a year |
| Day-to-day admin | £25–£140 a month |
| Call-out and invoice tracking | Free to try |
Qualify first, then cover the water risk
Find out exactly which exams and permits your state or council expects before you take paid work, since plumbing touches water, gas, and someone else’s property in ways customers will ask about directly. Have a policy running before the first job goes wrong, not scrambled together afterwards.
Separate the call-out from the fix
Out-of-hours and emergency call-outs should carry a clear premium over daytime rates, so keep the call-out fee distinct from the actual repair or install price. Fixed pricing suits known jobs, fitting a new appliance, say, while hourly rates protect you on investigative work like tracing a hidden leak.
Speed and trust win the calls
Emergency searches convert on whoever responds fastest with visible proof of reliability, so a reviewed online profile matters more here than in most trades. Cultivate letting agents on the side too: once you’re the name they call first, the work stops being one-off and starts being a standing arrangement.
Bill while the job is still fresh
Log the call-out fee, parts, and labour on site and send the branded PDF before you’ve left the property, so nothing gets forgotten by the time you’re back at the van. Plumber invoicing software shows what’s still unpaid across every job type at a glance.
Call-outs and repeat clients, covered
ServiceInvoice turns a call-out fee, parts, and labour into a branded invoice before you’ve packed up the van. See the plumber invoicing software.
Start invoicing freeWhat trips new plumbers up
- Pricing a 2am emergency no differently from a Tuesday morning visit.
- Putting off cover until a job goes wrong and it’s too late.
- Folding fittings and parts quietly into the labour figure.
- Never adjusting for the premium out-of-hours work should carry.
- Letting landlord invoices go unchased once the job is done.
Qualify, cover yourself, and separate the call-out fee from the fix. Fast, well-invoiced work keeps landlords calling back.