Factors to Consider When Deciding Which Floor to Keep Bees:

1. Terrain:
   The appropriate floor for beekeeping depends on the terrain of the property.

   • If the property is on flat terrain, it's not recommended to keep bees above the 3rd floor.
   • If the property is in a lower-lying area, you can consider going up to the 4th or 5th floor.
   • If the property is on higher ground, it's best to keep the bees at ground level.

2. Forage Sources:
   The height also depends on the type of forage plants nearby.

   • If the primary forage sources are tall trees, bees can be kept up to the 5th floor.
   • If the forage mainly consists of low-growing crops or flowers, it’s better not to go above the 3rd floor.

3. Climate:
   Climate conditions play a significant role as well.

   • In areas with strong winds, it’s not advisable to keep bees on the rooftop.
   • Even in areas with mild winds, it’s generally recommended not to keep bees above the 3rd floor since the higher you go, the windier it gets, making it harder for bees to return to the hive.

Conclusion:
There isn’t a strict rule, but generally, it’s best not to keep bees above the 3rd floor. The higher the floor, the more challenging it is for bees to forage and return to the hive, which can lower honey production and increase the workload on worker bees, shortening their lifespan. Beekeeping above the 3rd floor might not be economically viable.