I rented a 950 sq ft house with three bedrooms to a family of 4. Within a year there were 11 people living there. I charged $50 per extra person over the original 4, and they never hesitated to pay the rent. I worked with the original renter, and he wouldn't bring the check to work for the rent. Wanted me to come by the house. They always let me in, and wife wrote the check, typically with a bag of burritos or tamales to take home. Place was always spotless.I've seen this many times. In a small(ish) house I've seen no less than 4 families, each one gets a bedroom and they half convert the garage for a fourth. But to be fair I've seen this from several nationalities.