Residential Seattle neighborhood. Dealing with extreme partying for 5+ years from the neighbors. Parties also result in trash in our yard and in the street. Tried to sell our home and buyers backed out when they took a look next door in the daylight during the inspection and said they didn't want to live next door to a party house. Landlord has been contacted numerous times. We've talked to both the 6-8 tenants and the landlord. No improvement. Can we put something in writing? Should we get a lawyer involved now? We've missed work due to lack of sleep. We have a baby in the house. Neighbors have even admitted to us many times they cannot control their parties. Loss of our home sale cost us $12k because we had to back out of the house we bought.