====== Longhouse ======

The longhouse is the third tier of housing. It provides space for 15 villagers.

It has 0.9 building power.

The cost to upgrade from a house:
^ Resource       ^  Cost |
| Food           |   100 |
| Logs           |    30 |
| Hay            |    10 |
| Planks         |    30 |
| Cut stone      |    20 |