While building street, plaza, gardens, etc., put where you want to end building close to the right build buttons. Hold down the mouse while you are building a street, etc. and drag the mouse off the screen onto one of the build buttons. Your money stays the same. You must build one thing for real before you use the north, south, east, west buttons or it will become disfigured. Works great on streets, plazas, gardens, but not houses.