Can I use an unlimited number of construction sites?
The number of spots available and thus the size of your castle depends on your level. As you progress and level up, additional construction sites are unlocked. This way, your castle grows along with your experience.
Exception: Decorations directly attached to the castle do not use up any construction sites! However, decorations that are placed next to the castle (such as the windmill or the horse) do use up construction spots.
Based on many requests, additional construction sites can be purchased to build a strong and mighty castle right from the beginning. After opening the construction menu by pressing the "Build" button, you see the number of available and used construction sites. The "Green Plus symbol" opens a menu to purchase additional sites.
You will continue to receive a free construction spot with every level upgrade, till the maximum number is reached.