If you go to the following site, you can see the plans for any house built in the area, we looked at houses we liked, and then pulled the blueprints of the house up, and we really got a lot of good ideas.
Marion County Building Department-Permitting Inquiry
We built a Woodside and moved in April of this year, after having two other houses, which were Gardinia's , the second one we had stretched the garage , Lanai and bedrooms. What we did not like about the previous home, we made the changes in the new one. The best thing we did was stretch the laundry room by 3 feet wide (my wife calls it butt room), and had cabinets added over the laundry tub, along with recessed lighting, instead of industrial light (like the garage lights). This stretch also added 3 feet to the 4th bedroom and the Lanai, and was one of the cheaper upgrades. We also wanted a Island and a flat counter by the sink area. The second was adding a 4 foot stretch to the garage, and 8 foot garage doors for my Truck. Also insulated the Lanai ceiling and the garage ceiling fo a minimal cost. Good luck