How to write a quote as a plumber

Plumbing is the trade where a quick number on the phone bites you most, because so much of the cost is hidden behind a wall or under a floor. A tap swap is one thing; a leak you can't see the source of is another job entirely. A clear written quote tells the customer exactly what they're paying for and protects you when the job turns out bigger than it looked. Here is how to put one together as a plumber: the line items that matter, how to split labour from materials, when to quote and when to estimate, and the exclusions that keep you out of arguments.

The line items a plumbing quote usually carries

Most plumbing quotes come down to a handful of parts. Listing them, rather than giving one bare figure, shows the customer you know the job and gives them something to judge beyond the price.

• Labour: a day rate or a fixed price for the work, including time to isolate, drain down and refill the system.
• Materials: pipe, fittings, valves, the fixture or appliance itself, and the small consumables (flux, solder, PTFE, push-fit, sealant) that quietly add up.
• Access and making good: lifting and refitting floorboards, cutting into a boxed-in pipe, or chasing a wall, plus who is reinstating it afterwards.
• Waste removal: taking away the old suite, cylinder, radiator or boxed-up rubbish.
• Call-out or minimum charge on small jobs, so a five-minute fix half an hour away still pays.

Split labour from materials so the price reads clearly

Customers trust a price they can follow. Where it helps, show your labour and your materials separately, especially on jobs where the customer is choosing the fixture. A homeowner who picks a £600 mixer tap will understand why the bill moved if your quote separates their choice from your labour. Price your own labour from the realistic time on site and your materials from your suppliers, rather than copying a number off the next plumber, because your costs and the job in front of you are what decide the figure. If you're not sure your day rate covers your costs, our guide on how to set your day rate as a tradesperson walks through the calculation.

When to quote and when to estimate

This matters more in plumbing than almost any trade, because you often can't see the problem until you open something up. If you've seen the job and the scope is clear, a bathroom suite swap in the same spot, fitting a customer-supplied dishwasher, give a fixed quote. If there's a genuine unknown, a leak behind a wall, the state of old pipework, whether a stopcock will even turn, give an estimate and say plainly what could change the number. Don't quote a fixed price as if everything hidden is sound, then spring the extra on the customer at the end. Our guide on quote vs estimate covers exactly where that line sits.

The exclusions that keep plumbers out of disputes

Most plumbing arguments are about who supplies what and what "finished" means, not the price itself. Spell out your exclusions on the quote. The common ones are worth stating every time.

• Tiling, plastering or decorating after the work, unless you've priced it in.
• Faults you find once you start, for example perished pipework or a seized valve, agreed separately before you carry on.
• Items the customer is supplying, and that you're not responsible for parts that arrive faulty or missing.
• Anything gas: only a Gas Safe registered engineer touches gas appliances, so say if that's outside your scope or being arranged separately.
• Builders' work like knocking through or boxing in, if that's down to another trade.

What actually lifts your win rate

Plumbing is often an emergency or a now-ish job, so the plumber who replies fast and looks professional usually wins, not the cheapest. Getting a clear, written quote back while the customer still has a wet patch on the ceiling beats a vague text two days later. A clean scope, your exclusions stated, and a price the customer can follow all read as competence before you've turned a single nut. Most jobs lost to a cheaper rival aren't really about price, and our guide on why you lose jobs to cheaper quotes is an honest look at the reasons that usually are. This is the part where KeenQuote helps: describe the job in plain English and it writes the structured quote in about a minute, so you can send it fast while the customer is still keen. It's free for five quotes a month, and Pro is £19.99 a month for unlimited.