Expansion permits are a type of supplies in the game Hay Day that allow players to unlock special expansion areas on the bottom side of the farm. They are unlocked at Farm level 25 and cannot be bought or sold from another player on Hay Day. Expansion permits are not stored in the barn like normal supplies, and players can view the amount of expansion permits they currently have by clicking on their star level or by clicking on any of the shaded-out land located on the south-east area of their farm.

There are a number of different methods players can use to obtain expansion permits in Hay Day. Some of the best methods include:

• Derby rewards: If a players neighborhood performs well during the derby, they could receive expansion permits as a reward.

• Wheel of Fortune: Players can spin the Wheel of Fortune for a chance to win expansion permits.

• Mystery boxes: Expansion permits can be obtained through some mystery boxes.

• Special events: Some special events in Hay Day offer expansion permits as rewards.

Using a combination of these methods can help players obtain expansion permits and unlock the full potential of their farm.