You may want to look at some European design centers - sorry, don't have an address handy. There is specialized, though inexpensive, hardware to attache a cabinet door to a refrigerator. Basically, you build a carcass/faceframe, or whatever type of cabinet you are making, big enough for the fridge. Build a door to match the rest of the cabinets, and use this sliding thing - sorry can't think of a better description - to attach the back of the cabinet door to the front of the fridge door, so when you open the cabinet door, you open the fridge, too.
Of course, European fridges tend to be smaller, but it sure seemed to me that this could work with US fridges, too. Anybody have any more info on these brackets?
Harvey