Hard cap

__NOWYSIWYG__

A Hard cap is the maximum (cap) level a building can be upgraded, anything higher is not possible, either because the upgrade button disappears at that level, or because of the storage restrictions every town has.

Warehouse restrictions of each town
Due to the limited amount of goods that can be stored in 400 levels of combined warehouses, plus the storage provided by the Town hall (1,500 of each resource), there is a limit in how many resources you may spend on upgrading specific buildings.

After you have researched Bureaucracy (Economy), each town has 11 red-flagged building spaces. In order to achieve Max Reduction, you absolutely need a Carpenter or an Architect's Office, and one more building spot is occupied by the building you want to expand. This will take away from the town's maximum storage.

The maximum amount of Warehouses you can build is 10 (in version Patch 0.3.5.1). This combined with the Hard cap for the Warehouse is Level 40, you can build up to 10 * 40 = 400 Warehouse levels. Each level provides storage for 8,000 of each resource, so you can store up to 400 * 8,000 = 3,200,000 of each resource in Warehouse. Plus the storage provided by the Town hall (1,500 of each resource), which makes a total of 3,201,500 storage limit in each town.

This means any building that requires more than 3,201,500 of any one type of resource without Max Reduction or 2,881,500 with a Max Reduction building of one resource (taking up a Warehouse building spot) to be built to a specific level, this building can not be expanded past that level We say "This level is the building's Hard cap due to Warehouse restrictions".

Hard cap levels of buildings in Ikariam

 * If the building is not listed, then the maximum level is not known at this time. __NOWYSIWYG__

Hard cap levels of resources in Ikariam
Even resource sources are known to have a Hard cap (maximum) level in Ikariam. According to the Patch 0.3.5.1 changelog, the Hard cap of all resources is Level 50. __NOWYSIWYG__

Notes: