How the certificates are supposed to work
The regime runs on two documents. The leaseholder serves a Deed of Certificate establishing that the lease qualifies. The landlord responds with a Landlord's Certificate setting out whether remediation is due on the building and whether they meet the contribution condition — broadly, whether their group is wealthy enough to be required to pay.
The landlord has a defined period to respond, and the regulations attach a consequence to missing it rather than leaving the leaseholder to chase.