Next door neighbours affecting my flip

[Marita Jojo]

We recently updated completely a twin home located in a well sought area. It has one of the very good school districts. The home is on market now for over 3 months even when there is very low inventory. We have showings but most commented on the neighbours property not in a good shape. The neighbours have a lot of stuff in their front porch, steps, backyard and a huge LGBT flag. We are loosing money and this is affecting our plans. Has anyone else gone through similar situation and have some suggestions how to deal with this situation? Thanks for your time!