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Templates / Contract

Free Plumbing Contract Template

A plumbing contract covers the work scope, access and change approvals, payment terms, what’s excluded, and what happens if the job ends early.

Plumbing Contract template preview

Language:

en

Last updated:

October 2026

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A hidden leak can look like a quick fix right up until a floor has to come up or a tiled wall has to get opened. A plumbing contract gives the homeowner or site contact one place to read what gets done, what might change once the fault shows itself, and how the price stays agreed even when the work gets messy. The pages sit under Poppins headings with Roboto body text, with deep blue-green and oilcloth green used for emphasis and calls to action.

The wording does a lot of the hard parts for you. The agreement makes room for fault-finding and proper testing, then nails down what counts as “finished” before the final amount falls due, and when an invoice has to be paid. The document also puts boundaries in writing, like what happens if extra work turns up, what access has to be available, what doesn’t come under plumbing and heating, and how the place gets left at the end of the day... plus where responsibility starts and stops when pipework and fittings are already tired.

  • This document, together with the accepted Frames the agreement as the working reference for day-to-day decisions, including how changes get handled once work starts.
  • What I’m doing Covers fault-finding through to repair or replacement, testing, and handover notes, with space to list the specific project items.
  • Booking payment States the 40% booking payment to secure the slot, plus what happens on cancellation or a date move.
  • Changes on the day Spells out how unexpected findings get explained and priced, and when written approval is needed before extra work starts.
  • Ending the job Explains how either side can end the project, what gets invoiced or refunded, and includes Signature for sign-off.

Once the contract is in your workspace, you change the names, dates, rates, and any terms that need to match how you actually work, then send it to the client to sign online. After signing, the same wording becomes the shared reference point if the job needs a change approved, a section opened up, or the work has to pause and end at a safe point.

We went from spending hours on every proposal to creating fully customized ones in under 5 minutes. That's not an exaggeration - we timed it.

Yazan & Mawaheb
Yazan & MawahebAgency Owners

What to include in a plumbing contract

PartWhat it covers

This document, together with the accepted

Sets the contract up as the working agreement alongside an accepted proposal, so expectations stay clear once work starts.

What I’m doing

Describes the plumbing and heating work from diagnosis through testing and handover, with a place to list the included items.

Booking payment

Defines the booking payment amount and when it’s refundable, including how reschedules get handled.

Payment

States when the balance becomes due, what “finished” means, and the 14-day invoice payment window.

Changes on the day

Explains how on-site surprises get discussed and priced, and when written approval is required before extra work.

Access and decisions

Covers safe access, who can make decisions during the visit, and what needs to be cleared or available on site.

What’s not included

Draws a line around exclusions like non-plumbing causes, redecoration, specialist surveys, and other trades.

How I leave it

Covers end-of-day safety, what “trade finish” means for openings, and what making-good work isn’t included.

What I’m responsible for

Defines workmanship responsibilities and limits around pre-existing faults and hidden issues in the wider system.

Ending the job

Covers how the job can be ended safely, what gets invoiced or refunded, and includes a signing section.

Who it is for

Independent plumbers, plumbing and heating engineers, and emergency plumbing call-out services that need written terms before starting work on a property.

The contract in full

This document, together with the accepted proposal (where there is one), is the working agreement for what I will do, what you will provide, and how we handle changes once I’m on site. If anything in the day-to-day running of the job is unclear, I’ll stop and talk it through with you so the plan stays simple: find the issue, fix it properly, test it, and leave you with the paperwork and notes you need.

What I’m doing

I’ll carry out plumbing and heating work to confirm the fault, get access where needed, complete the repair or replacement, recommission, test, and hand over the paperwork and notes for the job. The specific items included for your project are listed below.

If I can rule out non-plumbing causes while I’m there (for example, water tracking from stonework or a roof issue), I’ll tell you what I’m seeing and what I’d check next. I won’t guess. If it needs a different trade, I’ll say so and I’ll keep my work limited to what I can stand over.

* Fault and cause summary * Completed repair or replacement * System refill and vent * Operational test results * Certification paperwork * Care and watch list

Booking payment

To book the work, you pay 40% of the agreed price when you sign. That secures your slot in my diary and covers time spent planning, ordering, and setting aside the day for your job, including turning down other work.

If you cancel before I’ve ordered parts or set off to site, I’ll return the booking payment minus any costs I’ve already committed to for your job. If parts have been ordered, or I’ve already attended site, the booking payment is not refundable. If I need to move the date because of an emergency call-out or a delayed part, I’ll offer the next workable date and keep you updated.

Payment

The remaining 60% is due when the job is finished. “Finished” means the repair or replacement I’ve been hired for is complete, the system has been refilled and vented where relevant, I’ve run operational tests, and I’ve handed over the agreed paperwork and notes.

I invoice as the job is completed, and each invoice is payable within 14 days of its date. If payment is late, I’ll contact you and ask for it to be brought up to date before I book any further non-emergency work or return for optional follow-on items. If you raise a genuine issue with what I’ve done, tell me straight away so I can look at it and put it right where it’s down to my workmanship.

Changes on the day

If the plan needs to change once I’m on site, I’ll stop and explain what I’ve found, what I can rule out, and what I recommend doing next. Common examples are: a pinhole leak turns out to be a longer damaged run, a buried pipe is involved, a valve won’t isolate, or I need to lift a board or open a small section to reach the fault safely.

Any extra work is priced before I do it, and I only go ahead with your written go-ahead. A text message or email reply is fine. If you’re not available to approve a change and it isn’t safe to leave (for example, I can’t fully isolate the water), I’ll do the minimum needed to make things safe and stop further damage, then I’ll pause and price the proper fix.

Access and decisions

You agree to give me safe access to the work area, the boiler and controls, hot water cylinder (if relevant), and the stopcock and any isolation valves. If I need to lift floors or open a wall or ceiling to trace a leak or reach pipework, I’ll agree the location with you first so you know what’s being opened and why.

You’ll have one point of contact who can make decisions while I’m there. Please keep pets secured and clear the immediate work area so I can get in and out with tools and materials. If you’re in a shop or premises that needs to stay open, tell me your busiest times. I’ll work around that where I can, but safety and access still come first.

What’s not included

Unless it’s listed in your project items, my price does not include repairs that are not plumbing and heating work, even if there is water showing. For example: roof leaks, failed pointing, cracked render, rising damp diagnosis, or structural drying and mould treatment. I’ll tell you what I’m seeing, but I won’t charge you for guesses or take on work that should be handled by another trade.

My price also does not include full redecoration, specialist leak detection surveys, asbestos handling, or making good beyond what I reasonably need to access and complete the repair. If a specific part is discontinued or not available from normal merchant supply, I’ll tell you the lead time and the nearest workable alternative before you spend money on it.

How I leave it

I work to keep the house or premises respected and the disruption contained. At the end of each day, I’ll leave the water and heating in the safest workable state for what’s been done. If something has to be left isolated or off overnight, I’ll explain it before I go.

I will make good my own access openings to a practical trade finish, meaning I’ll refit lifted boards or panels where possible and leave things tidy and safe. I do not include plastering, tiling, painting, or cosmetic matching unless you’ve specifically agreed it as part of the project. If you spot a snag after handover, tell me as soon as you can. If the same repaired point leaks again due to my workmanship, I’ll come back and put it right.

What I’m responsible for

I’m responsible for carrying out the plumbing and heating work with proper care and for fitting parts correctly, testing what I’ve worked on, and telling you what I’ve found. If I damage something through carelessness, I’ll put it right.

You understand that faults can be hidden until something is opened up, especially with buried pipework, boxed-in services, old valves, and brittle fittings. I’m not responsible for pre-existing issues in the wider system that I haven’t touched, or for damage caused by leaks or corrosion that were already underway before I arrived. Where I flag something as unsafe or not fit to run, you agree not to keep using it until it’s corrected, because I can’t stand over operation against safety advice.

Ending the job

You can end the project by telling me in writing. I’ll stop at a safe point, make the system safe where I reasonably can, and invoice for the work done and any parts ordered up to that day. If you’ve already paid more than that total, I’ll refund the difference after I’ve accounted for any non-returnable materials bought for your job.

I can also end the project if it becomes unsafe to continue, if I can’t get reasonable access, or if agreed payments are not made. If that happens, I’ll tell you why, I’ll leave what I’ve touched in the safest condition I can, and I’ll hand over what I’ve recorded about the fault and what’s been completed so far so you can move it on.

Signature

Legal Notice: Please consult legal advice and carefully review the content of this contract template before implementing this template in your business.

Questions about this contract template

What should a plumbing contract include?

A plumbing contract usually covers the scope of work, what access is needed, how changes get approved and priced, payment timing, and what isn’t included. This template also covers how the site gets left each day, responsibility limits for hidden faults, and what happens if the job ends early.

How do change orders work for plumbing repairs when you find more damage?

The contract sets the expectation that extra work gets priced before it starts and only goes ahead with written approval, including a text or email. If something can’t safely be left, the wording allows for the minimum work to make things safe, then a pause to price the proper fix.

What deposit do plumbers typically take to book a job?

This contract uses a 40% booking payment due at signing to secure the slot and cover planning and ordering. The same section explains when the booking payment is refundable and when it isn’t, such as after parts are ordered or a visit has happened.

When is the final payment due for plumbing work?

This contract puts the remaining 60% due when the job is finished, with “finished” defined in the text. The payment terms also say invoices are payable within 14 days of the invoice date.

Can a plumber exclude plastering, tiling, and redecorating from a repair job?

Yes, the contract can state that making good only covers practical trade finish for access openings, and that plastering, tiling, painting, and cosmetic matching aren’t included unless agreed. This template also lists other common exclusions like specialist surveys and work that belongs to another trade.

What happens if the client cancels a plumbing job after parts are ordered?

This contract says the booking payment is returned minus committed costs if cancellation happens before parts are ordered or travel starts. After parts are ordered or a site visit has happened, the wording makes the booking payment non-refundable.

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