Home Money Real Estate Why your parents gave you a lease If an adult child does not sign the lease, there are risks for the landlord and the adult child. Once the agreement is concluded, it is time for both family members, landlords and tenants, to sign the agreement. If a payment is required at the time of signing, for example.B. a deposit or a first month of rental, this must be paid to have access to the property. Even the hottest greetings can freeze at this point. But keep in mind that at this age of adult children living in their parents` home — according to the Pew Research Center, the most common residential situation for millennials (today`s 18-34 year olds) — parents have many reasons to present their flesh and blood with a lease. As in any roommate agreement, there are tasks that must be indicated for the house to be in order. .