1. The figure
Check what comparable homes support
Start with evidence from genuinely similar properties. Location, bedrooms, condition, furnishings and included services can matter more than a broad area average.
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Section 13 calculator
Use a Section 13 rent increase calculator before you serve Form 4A
If you already have a rent figure in mind, check it against the market before you serve it. The free checker shows whether the increase looks supportable, borderline, or likely to need stronger preparation.
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2. The evidence
Keep a record of the comparison
Save the listings, dates and reasons for including or excluding each comparable. A clear evidence trail is more useful than a long list of properties that do not match the let.
3. The route
Choose paperwork that fits the risk
A supportable proposal can follow the standard notice route. Existing objections, weak comparables or a likely tribunal challenge call for a fuller evidence and response file.
The rent figure needs a reality check
It is easy to calculate the monthly uplift. The harder question is whether that uplift still looks sensible when it is compared with similar homes nearby.
Before you serve Form 4A, you want to know whether the market evidence supports the proposed rent and whether the file should stay on the Standard route or move into the Defence route.
What to do with the result
If the rent sits in a supportable range, you can move into the Supported Rent Increase Pack with more confidence. If the figure is high against the evidence, the safer move is to prepare for challenge before the notice goes out.
That keeps the paid step practical. You are not buying a pack because the page says so; you are choosing the pack that matches the risk in front of you.
Your next decision
Check first, then prepare only what the case needs
Use the free checker to test the proposed rent and the strength of the evidence. If the result supports the increase, continue to the notice route. If the tenant has objected or the evidence is borderline, review the challenge route before serving anything. This keeps the paid step tied to the facts instead of asking you to choose a pack too early.
