We make a lot of these desks with and without the bookcase. We usually make them with four filing drawers. There is plenty of room for a computer inside. Plenty of pigeonholes will make your office naturally organized. This is a large and solid work area with a small footprint.
Dimensions: Desk: 44 inches wide x 45 inches high x 20 inches deep.
Bookcase Top: 39 inches high x 42 inches wide x 12 inches deep.