Address: 605 W 137th St New York, NY 10031 Phone: (646) 693-0527 Description: If you have been named an executor of an estate plan and about to enter a probate process, avoid these common probate mistakes: Failure to maintain the estate One of the most important responsibility of an executioner of an estate is keeping and maintaining the original estate. Failure to keep the estate property owned by the decedent during the probate process could make the will revoke and invalid. As the executor or administrator, you could be held liable should the property fall into despair or gets damaged.