No, you would not be allowed to do this. A mother-in-law suite is much different than adding on a unit to be used for rental. After we moved here 7 years ago the lady across the street added on a suite so she could live there & rent out the 3 bedroom ranch house. She got away with this for awhile but someone finally turned her in and now the house is just a rental. Because she added either a refrigerator or a stove, I can't remember which one, this made it a problem.