After 100 years you (your grand children) will get a notice stating the lease is over. You would then have two options.The buyer will be the owner for 99 years after which the landowner can assert ownership of the land again. Ordinarily, one joint tenant out of possession cannot recover exclusive possession of the joint property from his cotenant. The lease agreement should clearly describe the rental property's address and specific unit numbers. What is the difference between a regular registration and a 99 year lease registration? If the buyer wants to sell the house how does it work? Both require you to sign a Notice to Vacate. Our professionals offer a full range of brokerage, property management, valuation, project management, research and marketing services to clients.