I believe the DC area is #2 among cities with adult roommates next to San Fran so this may not apply to a lot of people.

Four adult joint tenants.

I'm looking at a property now that has been mis-managed by some adult siblings, who received the building after their parents' death several years ago.

Local examples I've witnessed result in selling the house (and evicting kids / grandkids), because young adults saddled with student loans, wage stagnation and transient employment have do not afford many the option to buy.

I once had a (Section 8, no less) tenant whose adult daughter was [covertly] living in the basement. 

I have been self employed for most of my adult life.

Stick to the basic luxuries, an HDTV with a Roku and a BluRay player with some adult movies. 

Further the adult children may with to move out on their own during the lease period.

Couldn't be simpler in Texas:To:  XxxxxxxThis is to serve as your 3 day notice to terminate the lease at 123 MainSigned Landlord DateNo reason needs to be givenOnly acceptable ways of delivery areIn person to an adult Tape to the inside of the door.

I also am involved with my church: a part of my focus is to develop leadership in the youth band as well as a young adult band.