Quoting app for plumbers in Western Australia
Fixtures, rough-in, hot water and drainage. Sumitt turns the walk-through into a clean plumbing quote your client accepts and pays on, from their phone.
The WAdeposit cap, licence line, payment-claim rules, variation rules and rates below are read from Sumitt’s own tables when this page renders, not written for it.
The rules in Western Australia that Sumitt already knows
Every rule below is read, when this page renders, from the tables the quote builder, the variation composer, the extension-of-time notice and the payment-claim generator run on. Sumitt warns and never blocks, and the page moves the day a table does.
Deposit cap in Western Australia
WA caps deposits at 6.5% on home-building contracts between $7,500 and $500,000.
Where no statutory cap applies, the builder still warns above the common-practice figure: “WA's 6.5% deposit cap covers contracts $7,500 to $500,000, and this job sits outside that band. Common practice is about 10%.”
Sumitt's default deposit is 10% of the total including GST. It warns you when a deposit goes over the line; it does not enforce it.
Home Building Contracts Act 1991 (WA)
Licence line in Western Australia
Sumitt's licence-line warning covers New South Wales, Victoria and Queensland today. It carries no line for Western Australia, so the licensing rules there stay yours to check.
Security of Payment claims in Western Australia
Security of Payment claims are built for New South Wales, Victoria and Queensland today. Western Australia is not covered yet, so an overdue invoice there runs up the follow-up ladder to the letter of demand instead.
Variations in Western Australia
In Western Australia the variation rules Sumitt shows are cited to Home Building Contracts Act 1991 (WA).
For contracts the Act covers ($7,500 to $500,000), variations belong in writing, signed by both parties.
State the price effect and any time effect before the work proceeds.
An unwritten variation in WA turns into a word-against-word dispute with the Building Commissioner. The signed record is what gets paid.
Signed before the work starts is the practice that wins disputes, and Sumitt flags a running job that has an unapproved variation on it.
Sumitt structures the variation and collects the signature, a record you keep, not legal advice. Where your contract sets its own variation process, follow it too.
Home Building Contracts Act 1991 (WA)
Extensions of time in Western Australia
In Western Australia the contract sets the extension-of-time window. Sumitt's notice defaults to 10 calendar days from the day the delay ended, shows the countdown, and asks you to check the contract's own figure.
A template you serve in your own name, not legal advice. Your contract's own extension-of-time clause governs the window and the grounds, so check it and keep a copy of everything.
Compliance certificate in Western Australia
Sumitt has not verified the plumbing certificate rules for Western Australia; check them with your plumbing regulator. Sumitt keeps the record and the reminder. You lodge with the regulator.
A compliance certificate record with the test results and the deadline lives on the job. Sumitt prepares the record and never lodges it. Not legal advice.
Plumbing compliance certificate or notice (check the requirement), Your state plumbing regulator
Regulator sourceSumitt provides software and templates, not legal, financial or tax advice. Check what applies to your contract.
What the work costs in Perth / WA metro
Sumitt's Perth / WA metro card runs materials at 1.03 and labour at 1.02 against the national card at 1.00. Outside the metro the Regional (freight + travel) card applies: materials 1.08, labour 1.03.
| Job | Cost | Floor | Healthy | Premium | Healthy, Perth / WA metro | |
|---|---|---|---|---|---|---|
| Bathroom reno (toilet, vanity, shower)per the job · benchmark scope: bathroom reno with new toilet, vanity and shower | $3,520 | $4,141 | $5,029 | $5,867 | $5,151 | Check your rate |
| Hot water swap (like for like)per the job · benchmark scope: replace electric hot water like for like | $1,725 | $2,029 | $2,464 | $2,875 | $2,537 | Check your rate |
National figures per unit, ex GST, derived from Sumitt’s 2026 rate cards priced over the benchmark scope shown under each job; the last column prices the same scope on the Perth / WA metro card. Cost is the benchmark cost of doing the work before any margin, and Floor, Healthy and Premium are the sell rates that land those margins. Not a survey of what anyone else charges, and nothing here reflects what any Sumitt user charges. How to read it, and the method, are on the index.
Built for plumbers
Every figure here is read from the Plumbing rate card, takeoff engine and hazard library inside Sumitt when this page renders, so it cannot say more than the product does.
The rate card
45 lines in 8 groups, 6 with a grade or billing basis to pick. Size field: Floor area (m²). Every rate editable.
- Fixtures & tapware
- Rough-in & pipework
- Hot water
- Drainage & waste
- Gas
- Roof & rainwater
- Compliance & labour
- Labour
The takeoff engine
Say it like this and the engine prices it off your card, deterministically.
- “bathroom reno with new toilet, vanity and shower”
- “swap hot water to heat pump”
- “replace 2 toilets like for like”
The safety pack
A SWMS drafted from the job you priced, with the plumbing hazard set:
- Roof & stormwater work
- Rough-in & excavation
- Fit-off, hot works & gas
3 site questions to confirm before sign-off.
You review it against the site, edit it and sign. Sumitt prepares the paperwork; it does not make your business compliant.
The full breakdown, with the graded options, the line-triggered hazards and the PPE, is on the plumbers page.
Straight answers
What deposit can plumbers take in Western Australia?
WA caps deposits at 6.5% on home-building contracts between $7,500 and $500,000. Under the Home Building Contracts Act 1991 (WA). Sumitt's default deposit is 10%. Sumitt warns you when a quote goes over it, it does not enforce it. Not legal advice.
Is there a licence threshold for plumbers in Western Australia?
Sumitt's licence-line warning covers New South Wales, Victoria and Queensland today. It carries no line for Western Australia, so the licensing rules there stay yours to check. Not legal advice.
Can plumbers make a Security of Payment claim in Western Australia?
Not yet. Security of Payment claims are built for New South Wales, Victoria and Queensland today. Western Australia is not covered yet, so an overdue invoice there runs up the follow-up ladder to the letter of demand instead. Not legal advice.
Which compliance certificate do plumbers need in Western Australia?
The Plumbing compliance certificate or notice (check the requirement). Sumitt has not verified the plumbing certificate rules for Western Australia; check them with your plumbing regulator. Sumitt keeps the record and the reminder. You lodge with the regulator. A compliance certificate record with the test results and the deadline lives on the job; Sumitt never lodges it. Not legal advice.
Sumitt provides software and templates, not legal, financial or tax advice.
Made for AU plumbers. Fixtures, rough-in, hot water and gas costed right.