Are condominiums required to sign easment agreements?

It depends on what you mean by condominiums.

It's possible that the condominium project developer who originally owns the land was required to sign an easement agreement. Your local county clerk's office has a copy of the original deed filing for the land which will contain an easement if one was signed and/or required.

If you are asking about an individual unit owner's requirement to sign an easement agreement, your association's attorney can give you an opinion.