How can I build a wooden bed frame that sits low to the floor?

make it yourself go to home depot and by some 1"X8" as runner buy six pieces of 1"X 2" two to attach to the runnere and the others for stalts to carry the box spring. home depot has pre made legs you can buy if you feel you want a lathe leg then get three one by twelves ahd glue them together making a piece 34 .5" X ^^^^^ one piece of one by twelve for the foot of the bed , and if you want to get a little fancy you can get a router for 59=69 dollars and fancy it up sand stain varnish and you have a beautiful bed I'll send you designs if you want to email me