Long read but I need help with arrogant obnoxious loud renters that moved in with daily parties?

When your neighbors behavior is leading you to have anxiety attacks to go outside of your OWN house this is a problem. Those late night parties that your neighbor is having could also not just be bothering you but the other people living around them as well. The best thing to do is have everyone call the police from a different phone number and most likely the police will take action. My aunt also rents houses and one of her tenants used to have late night parties and would not listen to her pleas to lower the music. So since we live in the same neighborhood as the tenants we called the police and we got an agreement with our neighbors to also call and action was taken. If this doesn't seem to work don't hesitate to file a lawsuit against them. If the problem with your neighbor results in a lawsuit, think about reducing the amount of money you're demanding. Most small-claims courts have a limit on the amount of money at stake in each case. It might be worth your while to lower your demand in exchange for the convenience of having your problem resolved in a small-claims court. Asking a lawyer for help doesn't necessarily mean you will end up in court or with a huge legal bill. Your lawyer can give you good advice about your rights and responsibilities with regard to your neighbors, often preventing problems before they arise.