Western Australia Form 21
The form for putting a tenant on notice that the rent is behind, and giving them a chance to fix it.
Form 21 is the Western Australia form for putting a tenant on notice that the rent is behind, and giving them a chance to fix it.
Rent arrears — a Form 21 breach notice can issue the day after rent falls due; 14 days to pay, then Form 1A (7 days)
Always take the current version from Consumer Protection (WA) — a superseded form can be refused, and the wording changes more often than the rule does. Last verified 1 August 2026.
When you can serve it
Rent arrears — a Form 21 breach notice can issue the day after rent falls due; 14 days to pay, then Form 1A (7 days). You can generate the Form 21 breach (14 days to pay) from the Compliance screen when the tenancy is eligible.
Getting it right
- Serve it the way the Act allows, and count the notice from when the tenant receives it — not from the date you wrote on it. Post adds days.
- Use the current version from the regulator. Ours is the rule, not the PDF.
- Keep proof of service. A correctly worded notice you cannot prove you served is the same as no notice.
- If the tenant fixes the problem inside the period, the notice has done its job and does not go further.
General information, not legal advice — the disclaimer at the foot of this page applies.
How LandlordMate handles it
LandlordMate tracks whether Form 21 is even available yet — the arrears day count, the notice window, the eligibility date — and generates it against the tenancy when it is, so the dates on the form are the dates the rule produced rather than ones you worked out twice.