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First-tier Tribunal Property Chamber: the tenant walkthrough for filing a rent increase application (RRA Day 4, May 2026)

Your Form 4A landed and the proposed rent feels too high. The First-tier Tribunal Property Chamber is your route to challenge it - and under RRA 2025 the downside risk is materially lower than under the old regime. This walkthrough takes you from receipt to filed application in an afternoon: the form, the £47 fee, the strict deadline, the evidence pack the tribunal actually wants, and what to expect after you file.