Use the result as a planning date
The calculator helps plan an annual gas safety check. Confirm the legal deadline against the engineer’s record and the property’s inspection history. An eligible check in the two months before an existing anniversary can preserve that anniversary; simply adding 12 months to the inspection date may give a different result.
Read the gas safety guide and HSE’s guidance. Annual checks cover relevant landlord-provided appliances and flues; maintenance duties also apply to installation pipework.
Give tenants the record
Give existing tenants the new record within 28 days of the check, and new tenants the current record before occupation. Keep each record for at least two years; if preserving an early-check anniversary, keep it until two further checks. Retain delivery evidence. The service letter PDF can accompany the engineer’s record.
Keep dates with your documents
Certificate reminders and document storage are included in Free for one property. Check saved dates and notification settings yourself. Document-expiry alerts and obligation reminders can have different schedules.
No new Section 21 notice is available for private assured tenancies in England. Safety duties continue independently; do not use a calculator result as proof of compliance.