This is a list of all the building and the requirements for building and upgrading them.
Lumberjack GuildLVLRequirements1-
2-
3-
4Storage 1
5Storage 1
6City Hall 2 - Blacksmith 1 - Storage 2
7City Hall 2 - Blacksmith 1 - Storage 2
8City Hall 2 - Blacksmith 1 - Storage 3
9City Hall 2 - Blacksmith 2 - Storage 3
10City Hall 2 - Blacksmith 2 - Storage 4
Stone QuarryLVLRequirements1-
2-
3-
4Storage 1
5Storage 1
6Blacksmith 1 - Storage 2
7City Hall 2 - Blacksmith 1 - Storage 2
8City Hall 2 - Blacksmith 1 - Storage 3
9City Hall 2 - Blacksmith 2 - Storage 3
10City Hall 2 - Blacksmith 2 - Storage 4
Iron MineLVLRequirements1-
2-
3-
4Storage 1
5Storage 1
6City Hall 2 - Blacksmith 1 - Storage 2
7City Hall 2 - Blacksmith 1 - Storage 2
8City Hall 2 - Blacksmith 1 - Storage 3
9City Hall 2 - Blacksmith 2 - Storage 3
10City Hall 2 - Blacksmith 2 - Storage 4
CastleLVLRequirements1Militia Headquarters 1
2Blacksmith 1 - Militia Headquarters 1
3Blacksmith 1 - Militia Headquarters 1 - Stables 1
4Blacksmith 2 - Militia Headquarters 2 - Swordmasters Guild 1 - Archery Grounds 1 - Stables 1
5Blacksmith 2 - Militia Headquarters 2 - Swordmasters Guild 1 - Archery Grounds 1 - Stables 1
6City Hall 2 - Blacksmith 3 - Militia Headquarters 2 - Swordmasters Guild 1 - Archery Grounds 1 - Siege Works 1 - Stables 2
7City Hall 2 - Blacksmith 3 - Militia Headquarters 3 - Swordmasters Guild 1 - Archery Grounds 1 - Siege Works 1 - Stables 2
8City Hall 3 - Blacksmith 4 - Militia Headquarters 3 - Swordmasters Guild 2 - Archery Grounds 2 - Siege Works 1 - Stables 2
9City Hall 3 - Blacksmith 4 - Militia Headquarters 3 - Swordmasters Guild 2 - Archery Grounds 2 - Siege Works 1 - Stables 3
10City Hall 4 - Blacksmith 5 - Militia Headquarters 4 - Swordmasters Guild 2 - Archery Grounds 2 - Siege Works 1 - Stables 3
Urban DevelopmentLVLRequirements1-
2-
3City Hall 2 - Militia Headquarters 1
4City Hall 2 - Market 1 - Militia Headquarters 1
5City Hall 3 - Market 1 - Militia Headquarters 1
6City Hall 3 - Market 1 - Militia Headquarters 2
7City Hall 4 - Market 1 - Militia Headquarters 2
8City Hall 4 - Academy 1 - Market 2 - Militia Headquarters 2
9City Hall 5 - Academy 1 - Market 2 - Militia Headquarters 3
10City Hall 5 - Academy 1 - Market 2 - Militia Headquarters 3
FarmingLVLRequirements1-
2-
3-
4Storage 1
5Storage 1
6Blacksmith 1 - Storage 2
7City Hall 2 - Blacksmith 1 - Storage 2
8City Hall 2 - Blacksmith 1 - Storage 3
9City Hall 2 - Blacksmith 2 - Storage 3
10City Hall 2 - Blacksmith 2 - Storage 4
Hunting/Fishing GuildLVLRequirements1-
2-
3-
4Storage 1
5Storage 1
6City Hall 2 - Blacksmith 1 - Storage 2
7City Hall 2 - Blacksmith 1 - Storage 2
8City Hall 2 - Blacksmith 1 - Storage 3
9City Hall 2 - Blacksmith 2 - Storage 3
10City Hall 2 - Blacksmith 2 - Storage 4
ShipyardLVLRequirements1Blacksmith 1
2Blacksmith 1
3City Hall 2 - Blacksmith 2
4City Hall 2 - Blacksmith 2
5City Hall 3 - Blacksmith 3
Militia HeadquartersLVLRequirements1-
2Urban Development 3 - Blacksmith 1
3Urban Development 5 - Blacksmith 1
4Urban Development 7 - Blacksmith 2
Siege WorksLVLRequirements1Castle 2 - Academy 1 - Blacksmith 1
2Castle 4 - Academy 2 - Blacksmith 3
Palladium MineLVLRequirements1Blacksmith 1 - Storage 1
2Blacksmith 2 - Storage 2
3City Hall 2 - Blacksmith 3 - Storage 3
4City Hall 2 - Blacksmith 4 - Storage 4
5City Hall 3 - Blacksmith 5 - Storage 5
Diamond MineLVLRequirements1Blacksmith 1 - Storage 1
2Blacksmith 2 - Storage 2
3City Hall 2 - Blacksmith 3 - Storage 3
4City Hall 2 - Blacksmith 4 - Storage 4
5City Hall 3 - Blacksmith 5 - Storage 5