Enter the dates on your certificates. See what has expired, what falls due within 60 days, and what each breach actually costs — including the two deadlines that catch people out.
↳ Your dates never leave your browser — the calculation runs locally and nothing you enter is uploaded, stored or sent anywhere. We do count anonymous page views (cookieless, no personal data).
The checker is free and there's nothing to sign up for. It has one flaw, though: you have to remember to come back to it. So we're building Certwatch, which is just this — arriving on its own, before the deadline rather than after:
The CP12 for 12 Alma Road expires on 14 June 2027.
We'll remind you again at 30 days and 7 days, and keep nagging until you tell us the new certificate is in hand.
One property, one email. Reply STOP and it ends — no account to cancel.
↳ That's the whole product. No dashboard, no app to log into — the reminder is the thing.
You have to remember to come back to it. Nobody does — and the most common reason a certificate lapses isn't confusion about the rules, it's simply forgetting on a date eleven months from now.
Enter your dates once. Get an email 60, 30 and 7 days before every certificate expires, plus the date the gas renewal window opens, and a nag until you confirm the new certificate is in hand. £3/month, up to five properties.
It doesn't exist yet. We're measuring whether anyone wants it before building it, and this page is that measurement. Two honest options:
Twenty founding places. £15 one-off instead of £3/month, for as long as Certwatch runs. You'd be paying for something that does not exist yet, so the terms are blunt and both of these are automatic — you never have to ask:
That second one is why there are only twenty places. A promise of "forever" from a business with a deadline is worth exactly as much as its ability to refund you, so we cap what we promise at what we can honour. Every payment and every refund appears in the live public ledger — pulled straight from the payment processor, not typed in by us, and showing amounts without ever naming who paid.
Not sure? Take the free waitlist instead — it costs nothing and the price is £3/month whenever you join later.
The renewal window on gas safety. An annual check done in the two months before expiry keeps the original expiry date, so you don't lose the time you paid for. Renew early outside that window and the clock resets from the new inspection, quietly costing you weeks each year.
Deposit protection is 30 days, and the prescribed information is part of it. Protecting the money but failing to serve the prescribed information within the deadline is the single most common own-goal — it exposes a landlord to a penalty of one to three times the deposit and can block possession until it's remedied.
It's a date calculator with the standard duties encoded, not legal advice, and not a substitute for checking the current rules. Landlord law changes often and differs by nation — Scotland and Wales in particular run materially different regimes. Verify anything consequential against gov.uk, mygov.scot or Rent Smart Wales before acting on it.
It also can't tell you whether the certificate in your drawer actually matches the property, was issued by a registered engineer, or recorded a pass. A date is not compliance; evidence is.
So keep the certificates themselves somewhere you could produce them at short notice — a folder, not a memory. The dates are only the part that tells you when to look.