This ‘how to’ guide considers how to serve a leaseholder deed of certificate (LDC) under the Building Safety Act 2022 (BSA 2022). The service charge protections under Schedule 8 only apply to ‘qualifying leases’ under BSA 2022, section 119(2) (other than one exception). LDCs confirm whether or not the lease fulfils the requirements of section 119(2)(d). This ‘how to’ guide covers the form and service of the LDC, the accompanying evidence required, and any applicable deadlines. Under BSA 2022, section 119(2), to be a ‘qualifying lease’, the conditions of section 119(2) (a)—(d) need to be fulfilled. Conditions (a) — (c) are straightforward: broadly, that it is a long (more than 21 years) lease of a dwelling, the tenant is liable to pay a service charge, and the lease was granted before 14 February 2022 — see Practice Note: Building Safety Act 2022—landlord and tenant issues — Remediation of historic defects—definitions. BSA 2022, section 119(2) condition (d) will be fulfilled if, as at 14 February 2022, the: