Evaluate the furniture in each room and remove anything that interrupts "the flow" or makes the room appear smaller. Consider renting a storage unit to move items off-site.
Clean and organize cabinets, closets and bookshelves.
Clean all light fixtures and ceiling fans.
Remove excessive wall hangings and knick-knacks.
Repair all plumbing leaks, including faucets and drain traps.
Make minor repairs (torn screens, sticking doors, cracked caulking).
Clean or paint walls and ceilings.
Replace worn cabinet and door knobs.
Fix or replace discolored grout.
Replace broken tiles.
Replace worn countertops.