So my TTCombat Warehouse / Extension Kit combo kit, plus another Warehouse Extension kit arrived today and I have to say that I am really happy with what you can do with it. By flipping the base board over you can have the extension span to the left or the right of the main warehouse building and you can even expand the warehouse in both directions at the same time (you saved all those bits to fill in the walkway holes, right?). You can also have warehouse + extension kit + warehouse although you would need half the parts from a second extension kit in order to do that.
In fact, if you are prepared to cut off the bottom tabs of your warehouse side walls, you can quite easily keep all your warehouse and expansion kits modular. Just sidle a few warehouse and extension kits together and cap off both ends with the warehouse side walls!
Damn. I think I'm going to need to order some more of these!
Warehouse + Extension + Extension. You'll need to flip the main (textured) side of the warehouse's walkway face down otherwise the railings will be on the wrong side.
Extension + Warehouse + Extension. I would suggest not installing the warehouse's walkway at all otherwise it will restrict access to the right (or left) side extension.
All I need now is a Trinity miniature..