Probably 4 times a year, whenever I get the bright idea that somehow a different configuration will make the room larger. It never does but I never give up, lol! It is truly amazing how many ways you can rearrange a 12 x 12 room crammed with sewing equipment and cutting table. Best of luck to you, you'll probably find things you have been searching for and get the hidden dust balls up. I consolidate myself with that, so all is not lost in all that work!