Instructions
Open "The Sims 2." Go to a new, blank lot to practice the technique before you try to turn the garage on an existing plot.
Place the driveway for the garage onto the lot where you want to place the garage.
Build the walls for the garage. Make sure the garage is at least 5 squares wide and 8 squares long.
Press "Ctrl," "Shift" and "C" all at the same time. Type "moveobjects" into the bar that pops up. Delete the sidewalk from the opposite side of the street.
Open the driveway section of the "Build" menu and select the driveway extenders. Place them inside the garage.
Click the garage doors on the "Build" menu and place them on the wall between the driveway and the driveway extenders inside the garage. The garage doors will now be turned to the side, rather than to the front as they normally are.