What's the noun for demise? Here's the word you're looking for.
demise
(law) The conveyance or transfer of an estate, either in fee for life or for years, most commonly the latter.
Transmission by formal act or conveyance to an heir or successor; transference; especially, the transfer or transmission of the crown or royal authority to a successor.
“And that is the real story of the tragic demise of Liam Lawlor.”
“Major setbacks led to the demise of the project by 1977.”
“Interest rate rises will impact on the recovery of the manufacturing industry, the demise of which is a key cause of the regional poverty exposed in your article.”
demit
The act of demitting.
A document certifying that a person has (honourably) demitted, as from a Masonic lodge.