Plumber quote template UK: what to include
A real plumber quote does more than name a price. It lists the parts, the labour, the access work, the bits the customer would not have thought of, and the get-out wording for the problem you only find once the boiler is off the wall. Here is what belongs on the page and what most plumbers leave off.
Most quotes that lose plumbing jobs are not too expensive. They are too vague. A customer comparing three quotes for the same combi swap will pick the one that names the boiler model, lists the gas-tightness test, and mentions the magnetic filter before they pick the one that just says "Supply and fit new boiler - £2,400." The vague quote loses even when it is the cheapest, because the customer assumes it is hiding something.
Plumbing quotes are also where most price disputes start. Copper, brass and stainless have moved a lot in the last few years; emergency callouts that turn into a half-day are common; and finding a corroded isolation valve behind a kitchen unit can add an hour you never quoted for. The wording on the page is what stops those moments turning into awkward phone calls at the end of the job.
The article below is the template: the eight line items every UK plumbing quote should carry, the wording for the bits that catch plumbers out, the formatting that gets the customer to actually read it, and the common mistakes that lose otherwise winnable jobs.
The eight line items every plumbing quote needs
A good plumbing quote reads like a parts-and-labour breakdown, not a single bottom line. The customer should be able to point at any number and ask what it covers, and the answer should be on the page. Eight lines cover almost every domestic plumbing job from a tap swap to a full bathroom rough-in.
- Labour - hours x rate, clearly stated. "1 day @ £350" reads as one big number; "8 hours @ £45/hr" reads as a professional rate and lets the customer compare it to other trades they know.
- Parts - itemised by name and supplier where possible. "Worcester Bosch 30CDi Compact" beats "new combi boiler"; "15mm compression elbow x 6" beats "fittings".
- Access and isolation - draining down, capping off, removing kitchen units to reach the stop tap. Always its own line, never bundled into labour.
- Disposal and waste - skip hire, builders waste, old boiler collection. Customers most often forget these exist; if you absorb them into "labour" they think you have padded it.
- Certificates and compliance - Gas Safe notification (£25 per notifiable job to the local building control), Water Regs sign-off for some installs, Benchmark logbook completion. Always its own line, even if the cost is zero, so the customer sees you are doing it.
- Provisional sums - allowances for things you cannot see until the wall is open. Phrase as "Allowance: £150 for replacement isolation valves if existing are seized; charged at cost if exceeded." Removes the "you quoted £2,400 then charged £2,700" surprise.
- Guarantee and aftercare - state the parts warranty (usually the manufacturer's, e.g. Worcester Bosch 10-year), your labour warranty (typically 12 months), and the call-back terms. The aftercare line is what closes the comparison against a cheaper quote with no warranty mentioned.
- Total and payment terms - subtotal, VAT (if registered), grand total, payment schedule, accepted methods. "50% deposit on materials, 50% on completion" is the standard for jobs over £1,000.
Wording for the bits that catch plumbers out
Three situations recur on plumbing jobs and cause more disputes than anything else: copper and brass prices moving between the quote and the job, finding worse-than-expected problems once a wall is open, and emergency callouts that escalate into half-day or whole-day work. The wording for each one belongs on the quote, not in a difficult phone call later.
- Materials price volatility - "Materials prices are based on supplier rates as of [date]. If copper, brass or stainless prices move more than 5% before the job start date, the materials line will be repriced and reconfirmed before any work begins." Honest, dated, and gives both sides an escape route if the merchants move significantly.
- Find-on-site work - "This quote covers the work described above. If we open the wall or floor and find pipework, fixings or fittings that need replacing for the new install to be code-compliant, we will stop, photograph what we have found, and send you a separate quote for that work before proceeding. Nothing is charged without your written go-ahead." Sets the customer up for a possible variation rather than springing one on them.
- Emergency callout escalation - "Initial callout covers the first hour of diagnostic and emergency-make-safe work. If the fault requires further parts or more than one hour on site, the work will be quoted as a separate job with materials and labour itemised. Customer agreement required before continuing." Stops the moment where a £90 callout becomes a £450 invoice with no warning.
- Discoveries that change the scope substantially - "If the discovered work would more than double the original quote, the customer can choose to stop the job at make-safe, pay only the callout and make-safe time, and take separate quotes elsewhere." This is the bit nobody puts on a quote, and it is the bit that builds the most trust on a long relationship.
How to lay the quote out on a page so customers actually read it
A quote that lists everything but reads as a wall of text gets skimmed and forgotten. A quote with clear headers, breakdowns, and a sensible amount of white space gets read in full and signed off the same day. The format below is what works for UK domestic plumbing quotes between £500 and £8,000.
- Top of the page - your business name, Gas Safe number (if applicable), and the customer's name and job address. Quote reference and valid-until date in the top right. Customers throw away quotes that look like a Word document; they keep quotes that look like a real document from a real business.
- Scope summary - two or three sentences describing the work in plain English before any prices. "Remove existing 24kW Worcester combi, fit new Worcester 30CDi Compact in the same location, fit new system filter, gas-tightness test, Benchmark logbook completion, two-year labour guarantee." The customer should be able to read just this and explain it to their partner.
- Itemised table - one row per line item, with description, quantity, unit, and price. Customers compare quotes by scanning the table; the more readable yours is, the more often you win on clarity rather than on price.
- Notes box at the bottom - what is NOT included (decorating after pipework, structural work, removal of existing tiles if needed, customer-supplied taps, etc.). The exclusions section is the one that protects you against the cheaper quote that does not say what is excluded.
- Accept and pay button (if you use a portal) - the customer should not have to print, sign, scan and email. One click to accept; the rest happens through the portal. UK trade quote-acceptance rates jump significantly when the friction is removed.
Common mistakes that lose plumber quotes
A few patterns show up in quotes that lose jobs they should have won. Most have nothing to do with the price and everything to do with how the quote reads. The list below covers the five most common ones in UK plumbing quotes specifically.
- Bundling parts into labour - "Supply and fit £1,800" tells the customer nothing. The cheaper competing quote that breaks it into £900 parts and £900 labour looks more transparent even if it is the same price.
- No date on the quote - parts prices change weekly, and a quote without a "valid until" date either gets argued over later or sits in a customer's inbox for three months before they call. Always put a valid-until date and stick to it.
- No mention of Gas Safe registration on gas work - even if you assume the customer knows, list your Gas Safe number on the quote. Customers comparing quotes for a boiler swap drop the ones without a Gas Safe number first, even before reading the prices.
- No exclusions list - "I will sort the boiler" sounds great until the customer thinks decorating, tile-work, and replacing the kitchen unit you cut into are also part of the job. The exclusions section is the most-missed line item across the trade.
- No payment terms - "Pay when done" creates a situation where the customer pays whenever they get round to it, and you spend the next month chasing. State terms on the quote: deposit amount, milestone payments if relevant, payment methods, and the period after invoicing.
A worked example: combi boiler swap quote
The example below is what a clean, customer-readable plumbing quote looks like for a Worcester combi swap. It is the same structure that works for unvented cylinder installs, bathroom rough-ins, kitchen plumbing, and most domestic gas work.
- Scope summary - "Remove existing Worcester 24CDi combi (faulty), supply and fit Worcester Bosch 30CDi Compact with magnetic system filter, replace 4 x 15mm isolation valves, gas-tightness test, Benchmark logbook completion, Gas Safe notification to local building control. Two-year labour guarantee + 10-year manufacturer parts warranty."
- Labour - 8 hours @ £55/hr = £440. (Notional UK rate; adjust to your real one.)
- Parts - Worcester 30CDi Compact (£1,180), magnetic filter (£95), 4 x 15mm isolation valves (£28), fittings and pipework (£45) = £1,348.
- Access and isolation - draining down system, capping off old gas connection = £45.
- Disposal - old boiler removal and disposal = £35.
- Certificates - Gas Safe notification to local building control = £25. Benchmark logbook completion = included.
- Provisional sum - allowance for replacement of any seized stopcock or seized isolation valve found during install = £80 (charged at cost if exceeded).
- Subtotal £2,018. VAT 20% (if registered) £403.60. Total £2,421.60.
- Payment - 50% materials deposit (£674) on acceptance, remainder on completion. BACS or card via portal accepted.
- Exclusions - re-tiling of any tile damaged during removal, redecorating after pipework, replacement of kitchen units cut to access the stop tap, customer-supplied parts.
Un flusso di lavoro semplice per una migliore preparazione dei preventivi
Before sending the quote - itemise the eight line items (labour, parts, access, disposal, certificates, provisional sums, guarantee, total + payment terms) so the customer can see where every pound goes.
Add the three wording clauses for materials volatility, find-on-site work, and emergency callout escalation. These are the lines that prevent disputes, not the lines that win the job.
Lay the quote out with a scope summary at the top, an itemised table in the middle, exclusions at the bottom, and an accept-and-pay link if your tooling supports it.
Date the quote and put a valid-until date 14 to 30 days out. Re-quote anything older than that rather than honouring stale materials prices.
Send via a quote-acceptance portal where possible, so the customer can click to accept and the deposit clears before you order parts.
A good plumbing quote does most of the selling for you. The price is rarely the thing that wins or loses a domestic plumbing job; the clarity of the breakdown, the presence of a Gas Safe number, and the customer's sense that you have thought about what could go wrong - that is what closes the comparison.
Use the eight-line structure on your next quote, copy the wording for the three situations that catch plumbers out, and see what happens to your acceptance rate. Most plumbers find they win more jobs at full price after the template change than they ever did with a vague £2,400 bottom line and a hope-for-the-best phone call.
Domande comuni
What should a UK plumber include in a quote?
Eight line items: labour (hours x rate), parts (itemised by name and supplier), access and isolation work, waste disposal, certificates and compliance (Gas Safe notification, Water Regs sign-off, Benchmark logbook), provisional sums for unknowns, guarantee terms, and a total with VAT and payment terms. Adding a short scope summary at the top and an exclusions box at the bottom turns the same numbers into a quote that customers actually read and sign.
How do I price a plumbing quote when copper and brass prices keep moving?
Date the quote and add a clause stating that materials prices are based on supplier rates as of [date], with a 5% movement threshold above which the materials line is repriced before any work starts. This is honest, dated, gives both sides an escape if merchants move significantly, and avoids the dispute when the customer says the quote was £200 lower three weeks ago.
Do I need to put my Gas Safe number on the quote?
Yes - on any quote that involves notifiable gas work. Customers comparing quotes for boiler installs or gas appliance work drop the ones without a visible Gas Safe number before reading the prices. Put it in the header alongside your business name. It signals legitimacy and removes the "I should ask if they are registered" question before it forms.
How do I handle find-on-site work that adds to a quoted price?
Put a clause in the quote saying that if discovered pipework, fixings or fittings need replacing for code compliance, the work stops, the issue is photographed, and a separate quote for the extra work is sent before continuing. Never charge for variation work without written customer agreement. This wording is the difference between a fair charge and a "you said £2,400 then billed me £2,800" complaint.
How long should a plumbing quote be valid for?
Fourteen to thirty days is standard. Plumbing materials prices change too often to honour a quote for longer, and customers who sit on a quote for three months are usually shopping multiple trades anyway. Put a clear valid-until date on the quote and re-quote anything older. This protects you from honouring stale prices and creates a useful nudge for the customer to make a decision.
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