Currently we are renting a condominium and preparing to purchase a house. I work in the town and our family has good reputation. One of our neighbors has written many letters to the board about us, our children, and our vehicle, and the letters are quite upsetting. This particular neighbor has a bad habit of targeting a certain family, which goes on and on. Can I sue them for defamation?
You've not provided any hint to the content of the letters or where those have been sent. You have a ground to sue if the things that have been written on the letter are not true.