Thursday, 28 May 2026No. 001

Renters Hub

Independent · Free · No tracking

Instrument · No. 001

Check your rent increase notice.

Has your landlord asked for more rent? Enter the details from your Section 13 notice and we'll tell you whether it follows the rules under the Renters' Rights Act 2025.

About 1 minute· Runs locally· No tracking
i.

The rent figures

What it is now, and what your landlord wants it to become.

ii.

The dates

These three dates determine whether the notice follows Section 13.

The 12-month rule runs from whichever of these is most recent.

Often called Form 4A.

This will be on the notice itself.

iii.

The form

From 1 May 2026, only Form 4A is valid. Anything else won't do.

iv.

Optional context

Not stored, just used to give better local context.

Stays in your browser. We don't see it.

All checks happen in your browser. We never see the figures you enter.

Methodology

How the check works

A landlord increasing rent on an assured tenancy in England must do three things at once: serve the notice on the official Form 4A, give you at least two months between serving the notice and the new rent taking effect, and wait at least 12 months from the last increase (or your tenancy start). The tool runs all three checks on the dates you enter and tells you which look right and which look like a problem.

A fourth check is informational only: if the percentage increase is significant, we'll flag it so you can decide whether to compare against local market rents before accepting. The legal test for challenge is open-market rent, not a fixed percentage.

For the full plain-English explanation of how Section 13 works, read Section 13 notices, decoded.