If you are experiencing issues with your upstairs neighbor and have already attempted to resolve the matter by speaking with them, the property management firm, and the police, and the situation has not improved, you may want to consider consulting with a lawyer to explore your legal options.
The specific legal remedies available to you will depend on the laws and regulations in your jurisdiction. However, some potential courses of action you could explore include:
Civil Lawsuit: You might have grounds to sue your neighbor for creating a nuisance or interfering with your use and enjoyment of your property. Consulting with a lawyer will help determine if you have a valid legal claim and guide you through the process.
Mediation: Before resorting to a lawsuit, you may consider mediation as an alternative dispute resolution method. A mediator can help facilitate communication between you and your neighbor to find a mutually agreeable solution.
Local Ordinances and Regulations: Research local laws and regulations that govern issues related to nuisance, littering, and property rights. There may be specific rules that pertain to your situation, and local authorities might be able to intervene.
Restraining Order: In extreme cases where there is harassment or threats involved, you might explore the option of obtaining a restraining order against your neighbor.
Remember, it's essential to consult with a lawyer who specializes in property law or civil disputes in your area to get personalized advice based on the specific details of your situation. They can help you understand your rights, assess the strength of your case, and guide you through the legal process if you decide to pursue legal action.