Figured I'd post your feedback here since I got this one for judging.
I like the concept and idea of this. I would like to see this improved into a bigger game. I do wish I had an undo button for building though the first time I played it I got in a position where I couldn't put the farm anywhere as the house was in a bad spot.
I do think you may need to optimize the code though. You will notice I did say above 1st time I played it. See my PC I was using for all the contest entries got 4 FPS on this game. I think it might be due to all the checks in the area for town building. It actually eventually crashed to 0 FPS and froze. So I tried my high end gaming rig with an SSD and then it worked fine with good FPS all the way, and I was able to play to completion then. Still this could be something to look at as my PC from 2017 that I first played it on is still pretty high end and it shouldn't have struggled that badly to run the game.
Overall though I think you got a good idea here and would like to see this expanded.