Expand the house to get more rooms. Add a garage if possible. Renovate the bathroom and rearrange the kitchen so that it can be accessed from the back.
Remodel in part the ground floor to gain an entrance with a large dressing room, a dedicated laundry room, a large master suite with an oversized closet and a solarium with a built-in spa. Also, increase the square footage to gain four bedrooms, a second den and a bathroom.
Convert the back concrete stoop into a glass walled sun room with an outside deck for a table and the BBQ. Add a carport to the house with a covered access to the sun room.
Convert the one car garage into a two-car garage, add a second story with two rooms. Change the appearance of the house from "modern" to a more classic look.
Rebuild the garage on solid foundations. Add a story above it for a spacious living room. While we are at it, renovate the main floor bathroom. Replace all the doors and windows and give the main facade a new look.
Give a new look to this duplex by replacing the doors and windows, by modifying the roof, the porches and the materials, especially on the front elevation.
Revamp the house while keeping the architecture simple befitting the neighbourhood. Add a gallery of good proportions and perhaps even a gazebo to make good use of the orientation but without any aluminum columns.