This is a trend that could have some legs to it.  Granny cottages are allowed in Denver?  Who knew?  Why not use all of the land/space you have?  Why not have someone help you pay the mortgage?  It also makes sense why some communities would ban them...because then it may seem like a multi-family community and potentially ruin the character of the neighborhood.  Lots of buyers always tell us they are looking for real estate in Parker, Castle Rock, or Elizabeth where they can have multi-generations live there.  The standard answer these days is "you have to find something for sale with no HOA and pretty far out to be able to pull this off."  Seems like there should be more opportunities for this in Douglas County.