I own two single family homes right next to each other in a small town outside of Ottawa, Canada.  One home is 4 bed 2 bath - the other is 3 bed 2 bath.  They each sit on about an acre of land in a small family subdivision.  Having the two properties beside each other is there any creative ideas as to what I could do to maximize rental income?  Should I consider converting both into duplexes or add granny suites?  Are there advantages to having them together as they are?