When to use it
Start with the free diagnostic at /landlord-compliance-os/diagnostic/. It gives you a concrete result first, then points to the paid product only if the next step is useful.
An accidental landlord in England with 1–3 properties knows what each property appears to need, what evidence is missing, and what to verify on GOV.UK — so a certificate, Information Sheet record, written-information duty, or rent-increase date is less likely to slip through unnoticed. Lead with compliance calendar and certificate-of-service proof, not generic templates.