How many times have you read the dimensions of a room on a floor plan and then realized your existing furniture doesn't fit like you thought into the finished room? Measure your existing furniture before deciding on final sizes for a home. If you're not sure how large of room you need, measure your existing furniture, tables and walking area to determine how much space you REALLY need in your next floor plan. Add on additional area if you're trying to add space to your next home.
The roofs will be capped whether or not we build a second level on the garages because I'm not a fan of flat roofs. We're looking at about 9m length of wall to be built for each garage which would give us about 9sqm of space which isn't terribly efficient. It's a lot of wall compared to the space created.