Should you require all adults to sign the lease.....Absolutely. 

Aside from the laundry list of issues, in the great State of Arizona, having an adult move-in (without notifying us or providing our consent) is a Material Breach of Contract and is grounds for immediate eviction.

Assisted living facilities and continuing-care retirement communities are very different from what we usually refer to 55+ Adult Communities – these places are never (as far as I know would even be considered in our real investment portfolio) – just clearing that up.Now, 55+ Adult communities have some basic identifying characteristics: The unit prices are lower, they all operate under a strong HOA which controls entrance/purchase requirements, and if and when you will be allowed to rent/lease your unit.

an adult and 2 kids.

They consider it a home occupation.Aurora does however allow up to 4 unrelated adults per single family residence.

Mine is how many occupants of the property, How many working adults, Do you have any pets, Where do you currently live, and When is your anticipated move in date. 

It may also be a sibling or offspring.The latter is my favorite target market: the child that lives at home during their adult life and ‘fails to launch.’

As of 2010, about 54 percent of adults were married, down from 57 percent a decade earlier, according to the U.S.

I heard he went there a lot when his kids were growing up (it's a great family vacation area) but now they are adults and don't use it.

Very often landlords are violating city ordinances and putting too many un-related adults into properties.