How to Price Plumbing Jobs
Charging by the hour is simple but caps what you earn; pricing the job rewards you for being fast and good. Most plumbers need both — the trick is knowing which to use when.
Pricing is where plumbing businesses quietly win or lose money. Two plumbers with the same skills can earn very differently purely on how they charge — one races the clock on day rate, the other prices the outcome and pockets the efficiency.
This guide covers the three ways plumbers charge — day rate, price work and callout — when each fits, and how to build quotes and callout charges that cover your real costs and protect your margin.
Key takeaways
- Day rate suits open-ended or diagnostic work; price work rewards speed and suits well-defined jobs.
- Your day rate must cover overheads and downtime, not just your take-home — work back from what you need to earn per year.
- A callout or minimum charge protects small jobs from being run at a loss.
- Price defined jobs (a tap swap, a rad change) as a fixed price so being quick pays you, not the customer.
- Every quote should list inclusions, exclusions and payment terms so extras are paid, not absorbed.
Day rate vs price work
A day rate is honest and low-risk on open-ended work — leak-chasing, fault-finding, a job where you cannot see the full scope until you start. You are paid for your time whatever you find, which protects you when a simple job turns into a saga.
Price work — a fixed price for a defined job — is where a good plumber earns more. If you can swap a cylinder in half a day but the customer expects it to take one, pricing the job means your speed pays you rather than the clock. The risk is yours, so only price work you can scope confidently.
Set a day rate that actually covers you
Plenty of plumbers set a day rate by copying the plumber down the road, then wonder why there is nothing left at year end. Work it out instead: take the annual income you need, add your overheads — van, tools, insurance, fuel, phone, software, pension — and divide by the number of chargeable days you realistically work once holidays, sickness, quoting and admin are stripped out.
That last part matters. You do not bill 260 days a year. Once you remove non-chargeable time, your true chargeable days might be 200 or fewer, and your rate has to carry the rest of the year.
Know your real margin per job
Logging materials and expenses against each job in TradePlanr shows what you actually made — not what you hoped to make — so you can tighten the next quote instead of guessing.
Callout and minimum charges
Small jobs kill margins if you let them. Driving across town, parking, diagnosing and fixing a dripping tap can eat two hours for a job the customer thinks is worth twenty quid. A callout charge or a minimum job fee stops that, and setting it up front avoids awkwardness at the door.
Be clear about what the callout covers — typically the visit plus the first period of labour — and what happens after. Emergency and out-of-hours work should carry a higher rate; your evenings and weekends are worth more, and customers expect to pay for them.
Build a quote that holds
A quote is a fixed price you are committing to, so it needs to be scoped tightly. List what is included, what is explicitly excluded, any PC sums for customer-chosen items, and the assumptions you priced on — accessible pipework, working isolation, no hidden damage.
Send it looking professional and get it accepted in writing. A signed quote wins work against a mate's-rate mumble and gives you something to point to when the customer 'remembers' you agreed to do the downstairs loo as well.
Quote, sign and invoice from one place
With TradePlanr you can send a quote the customer signs on their phone, then convert it straight to an invoice with a card payment link — so you are paid days faster instead of writing it up at the weekend.
Frequently asked questions
Should I charge a day rate or price the job?
Use a day rate for open-ended or diagnostic work where you cannot see the full scope, and price work for defined jobs you can scope confidently. Pricing rewards you for being fast; day rate protects you when a job grows.
How do I work out my day rate?
Add the annual income you need to your overheads, then divide by your realistic chargeable days — not 260, but what is left after holidays, sickness, quoting and admin. That gives a rate that covers the whole year, not just billable hours.
Is a callout charge worth it?
Yes. A callout or minimum job fee stops small jobs running at a loss once you account for travel, parking and diagnosis. State it up front so there are no surprises at the door, and charge more for emergency and out-of-hours work.
From guidance to action
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