I hope you have already found your snake by now. If not, don't give up hope. Unless your snake has actually escaped your home and made it to the great outdoors, this little bit of advice has always worked for me:
Get yourself a bag of of good potting soil (that does not contain fertilizers or pesticides...they come in various sized bags). I prefer to purchase this nice clean, fluffy soil (snakes love it) instead of using it from my own yard, due to possible parasites like mites); You can either leave the soil in the bag and cut the top open, or, if you are worried about a little dirt spilling in your house you can always place it in a bucket or a tub and place it along a wall. Place several of them if possible, for maximum effect in shorter time. Snakes will usually travel along walls as opposed to traveling across an open expanse. The snakes smell the dirt (it smells like outside) and they will go and bury themselves it it. I have found every missing snake this way, from ball pythons and boas to kings & gopher snakes. It always works if they are still in your house!
As far as hiding places if you are still into searching, these are places that lost snakes have been found: Inside your closets (check inside shoes & bags, purses, suitcases, POCKETS, even pockets of clothing that are hanging -- don't ask me how they get up there, but they can -- even on the top shelf of a high closet; any open container type dark spaces), under sinks (bathroom & kitchen -- I have even heard they have been found curled up under a toilet plunger), under refrigerators for the warmth and water sources -- although if they are under the fridge when the fan motor kicks on -- it's not always good news for the snake; under and inside of stoves for heat. If you happen to be "lucky" enough to have field rodents occasionally grace your home, the snake will be looking for their nests, too. These are generally the first places to look, as hunger, or the scent of a rodent may have been a reason your snake decided to leave his enclosure. GOOD LUCK!