I hate the Maxis-made houses, but the Federal Fortress looked nice, as I love symmetrical houses. I noticed that others did makeovers too, but they kept land size that is 4×4, a waste of land. Also they renovated it using some expansion packs. Personally I made it more beautiful without using any expansion pack, meaning that the house is compatible with any game.
Personally I rebuilt the house from scratch, on a 3×3 lot, while keeping the house size, as well as fireplaces and windows positions. Stair layout was maintained but I placed narrow stairs. I also added a outer alley and a 20×5 pool. The first floor 2-square wide hallways were converted into bathrooms while the second floor 2-square wide hallway was enlarged to a usable 4-square wide room. Third floor attic space was also maximized and converted into 2 bedrooms. Total: up to 6 bedrooms.
Suitable for families up to 8 sims. There is plenty of space remaining for extra items if you have expansion packs.
Lot size: 3×3.
Lot facing: North.
Lot price: $259.942.
Building size: 16×12 squares.
Floor area: 452 squares.
Pool area: 100 squares.
Expansions requires: none, only base game.