If you can reorganize and equip your kitchen for maximum utility, you may not need to blow out the walls to gain square footage. Start by replacing space-hogging shelves with cabinet-height pullout drawers 8 inches wide, containing racks for canned goods and other items. "You're getting three or more horizontal planes where you might otherwise get only one," says Louis Smith Jr., an architect with Meier Group, in Ann Arbor, Michigan. You could easily shell out a few thousand to outfit cabinets with upgrades like dividers, pull-out pot trays, and lazy Susans, but you'll save many times that amount by skipping the addition you thought you needed.
Cost to expand kitchen by 200 square feet: $48,000 to $95,000
Cost of super-efficient, custom-designed cabinets: $35,000
SAVED: Up to $60,000