Consider Manufactured Homes
The last few years have shown a surge in sales of manufactured housing. There are many reasons:
1) Affordability
2) Income Property
3) Additional space for returning students, or care for elderly parents
The State of California has eased the requirements to place a secondary home on an R-1 lot. These homes are called Accessory Dwelling Units or ADU's. There are a few guildelines and the home cannot be over 1200 square feet.