Land

Land purchasing can be accessed by clicking "Town" under the Castle Age banner, then clicking the "Land" tab. Land is used to make money every hour automatically. Some people think of this as a supplemental income, but if you want to buy the best items in the game, the only way you can buy it is if you have a lot of land. Once you buy land, it adds to your hourly income, and will continue to do so forever. The trick is to buy land, and have the land pay for itself, and use the money generated by land to buy more land.

Land has an incremental cost. When you first start off in the game, it is best to buy land as soon as you have the money for it. After buying 20 pieces of land, it is the most cost effect to buy land 10 at a time.

Land Chart

 * For more accurate information regarding land pricing (especially after you have bought a decent amount of land and the Incremental Cost raises the prices significantly), you should use a Castle Age Spreadsheet.