Inside your home:
Living Areas: Remove personal items you do not want photographed. Remove clutter and tidy up the shelves, tables, couches etc. Move excess furniture out of rooms. Replace burnt out light bulbs with matching bulbs (the photographer will need light in most rooms).
Kitchen: Clean off kitchen counters; remove spices, trays, pots, pans, food! Make sure dirty/clean dishes are out of the sink & put away. Hide the garbage cans for the time of the photo shoot.