Is your rent increase notice valid?

Five questions. We check whether your rent-increase notice (Form 4A) meets what the law requires — and tell you exactly which rule it fails, if any. You decide whether to challenge.

Validity check — failed

Validity check — needs more info

Validity check — passed

Looking to audit a Section 8 possession notice?

Notice Doctor checks rent-increase notices (Form 4A / Section 13). For Section 8 audits, use the Possession Defence tool — it analyses the notice form, ground, period and service.

Is your rent increase notice valid?

A defective notice has no legal effect — your rent doesn’t go up at all. You can take it to the housing tribunal on the problem alone, without arguing about the rent amount.

Optional — let AI read your notice

Save typing by uploading the notice or pasting the text. We’ll fill in the form, notice date and effective date for you, then you just answer the remaining three about your tenancy.

Reading your notice…

Section 8 (possession) notice

, not a rent-increase notice. Notice Doctor only checks Form 4A / Section 13 rent-increase notices. The tool you need is

— it checks Section 8 notices for the same kind of procedural defects.

Two questions left below — about your tenancy, not the notice.

Please answer every question for an accurate verdict.

Not legal advice. The Notice Doctor checks the most common procedural defects under the Renters’ Rights Act 2025. For complex situations, please contact us at

hello@startmyclaim.ai

or get a second opinion from a qualified housing solicitor.