The original houses were die cut. If you are going to make the same shape over and over again you can make your own dies.
Finding the steel rule die in smaller quantities is the bigger problem. Making the dies is not too bad, it just a groove in a block into which you insert the steel. You can have the base blocks laser cut. But you do need to be careful as this stuff is super sharp. If you browse through there list you will see they even have die rule for making perforated cuts.
http://www.helmold.com/products/steelrule.pdf
If your dies are small enough, such as individual ones for windows or doors, you can use an arbor press to make the cut instead of hammering on the die. Much faster, safer and easier on your hands as an arbor press has the mechanical advantage of leverage and gears. You can get arbor presses at Harbor Freight or used ones on craigslist.
A clever person might be able to adapt arc punches so they can be used in an arbor press. You would need a custom anvil for underneath as in a replaceable piece of moderately soft plywood.
never even heard of one until i read your post...i know for sure i am stuck in the last century...