There are four different categories classifying the different kinds of buildings in GoldenTowns.
 
Production Buildings
These are the basic buildings that provide you with the ability to produce resources such as Vegetables, Meat, Wood, Iron, Stone, Clay and Gold. Production Buildings includes:

Vegetables Farm
Animal Farm
Blacksmith
Stone Quarry
Claypit
Gold Mine
Basic Services Buildings
Basic Services Buildings are buildings that either provide influence for other buildings to be upgradeable or are buildings that provide unique functions in the game. Unique functions includes the training of unskilled workers, resource storage and population upkeep.
 
Basic Services Buildings includes:
House
Warehouse
Market
Firehall
Hospital
Police Station
School
 
Luxury Services Buildings
 
Luxury Services Buildings are buildings that are similar to Basic Services Buildings, but are used to provide influence for higher tier(level) buildings to be upgradeable. Except for the Graveyard building, which acts similar to a house in the Basic Services Buildings, but for the dead. Luxury Services Buildings includes:
Restaurant
Casino
Bank
Brothel
Graveyard
Church
Military Buildings
Military Buildings are buildings that provide you with the ability to produce troops varying from attacking, defending, to even reconnaissance units. The production of ammunition is also made available through the Artillery Factory and the storage of ammunition in the Artillery Warehouse. Military Buildings includes:
Barracks
Artillery Factory
Artillery Warehouse
Military Academy
Defense Tower
Spy House
Upgrading of Buildings
General things to take note of when upgrading buildings (they may or may not require these combinations):
Buildings that require specific influence needs to be in the zone of influence of that specific building in order to be upgraded!
Road level next to the building needs to be upgraded and connected to the town hall before any building can be upgraded to the next level!
The amount of resources needed to upgrade the building needs to be met! (Duh, as if this isn\'t obvious enough!)
The availability of Unskilled Workers plays an important role as well! (This is very true in the case of upgrading a production building since an upgraded building requires an additional worker to man it and you need at least two Unskilled Workers to be available in order to start the upgrade process as GoldenTowns does not include both workers as working on the construction but only one and the other is reserved as being stationed on that upgraded production building!) [I know, this totally sucks for all the beginners out there! Not only do you need to spend more time constructing the building, you get confused as to where the other one went!]
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