Tools and calculators
Interactive tools that teach while they guide
Each tool is educational. They help you identify the right reading path, the right timing questions, and the official sources you should check next. They do not predict outcomes or replace advice.
Section 21 validity checker
Flagship toolReceived a Section 21 notice? Answer 8 questions and find out in plain English whether it is likely valid, likely invalid, or affected by the transitional rules.
Use this tool →Rent increase checker
NewEnter your current and proposed rent to find out if the increase is within the CPI+1% benchmark (3.8%) under the Renters' Rights Act 2025 — plus the 4 process rules your landlord must follow.
Use this tool →Am I protected by the Renters' Rights Act?
NewAnswer 4 questions and get a personalised summary of the protections that apply to your tenancy under the Renters' Rights Act 2025 — with a shareable result card.
Use this tool →Rent increase challenge letter
NewAnswer 7 questions about your rent increase notice. Get a formal letter challenging an invalid method, insufficient notice, or proposing a First-tier Tribunal referral.
Use this tool →Repair escalation tool
NewLandlord not fixing the problem? Answer 7 questions and generate two letters — a formal repair request citing landlord duties and an escalation to Environmental Health.
Use this tool →What changes for me
Answer a few questions about your role, tenancy dates, and current issue. The tool points you to the right guides and official sources to check before acting.
Use this tool →Rent increase timeline checker
Enter your key dates and find out whether the timing and notice route for a rent increase are consistent with the current framework.
Use this tool →Notice transition explainer
Work out which rules apply when paperwork was served before 1 May 2026 but the matter continues after commencement.
Use this tool →Share your outcome
Used one of our tools and took action? Tell us what happened. Real outcomes help us improve guidance for tenants across England. Anonymous.
Use this tool →