Neighbors parking in front of my house

[David Kendall]

I recently purchased a two family home at the end of a street. Next door there is a three unit house filled with renters. Lately someone from one of the rental units next door has been parking their car in front of my house (which block the walkway to my front door) for days on end. I feel like this is an eyesore and disrespectful. The other problem is that once we rent out the apartment we will need more parking spaces to accommodate them and their potential guests. I have called the police and town hall about the parking laws and apparently there is nothing illegal with them doing this. I am wondering if anyone else has experienced this problem and curious as to how they solved it. Any suggestions are greatly appreciated. Thanks!