Guide overview
A document-first checklist for reviewing a renewal without relying on a headline percentage alone.
Start with the exact renewal date, current rent and increase clause. Then retrieve the latest twelve-month CPI average available for that renewal month and calculate the maximum under the general rule.
Keep the calculation and communication in writing. Do not substitute the annual CPI rate, a social-media figure or a new-listing asking rent for the legally relevant index. If the lease is older than five years, is denominated in foreign currency, is commercial, or is already in litigation, obtain individual legal advice.
SERV A2Z can organise the property file and calculation record, but a qualified lawyer should confirm contested or exceptional cases.
- Confirm renewal date
- Check contract clause
- Keep written calculation

