[Evil-Magus]

Buildings:
Name-Requirements|To destroy
Small House- 50 boards, 25 stones|100 with an Axe or Pick
Medium House- 100 boards, 50 stones|200 with an Axe or Pick
Large House- 300 boards, 150 stones|650 with an Axe or Pick
Fence(6x2)- 25 boards|50 with an Axe
Wall(2x6)- 25 stones|75 with a Pick
Market Stand- 25 boards|50 with an Axe
Lumbermill/Crafting/Baking- 75 boards, 50 stones|250 with an Axe or Pick
I know the requirements look like alot, but if you look above, I stated that lots of people should ship supplies to their kingdoms, and only a few workers would be making them.
Another suggestion would be an "HP" system for the houses.
If someone is attacking something you built, you should be able to go to it and start fixing it, if one of them was attacking(doing about 5 HP damage to the building a second), and 5 of you were fixing at the same time(adding about 2 HP each), then it would be an endless cycle...You should be able to fix it by taking away 2 boards and 2 stones a second.