#3 is the best of the three designs you submitted, and though it represents a "f" lying on its side, the left part of the logo (to the right of the house) feels imbalanced. Additional imagery we want to see is this door here (open), if you can work this into the design or create an another design with it as the primary element.
http://i933.photobucket.com/albums/ad180/bamfazor/Fisher%20House/door-patio.jpg