Help ! Trying to find owners of vacant house?

[Eder Aldana]

Hi everyone I need some advice on how to find and contact the owners of a property I’m trying to Brrr. So I went to the the town and I was able to obtain the tax bill, I found out the property taxes are about 9k a year. Also I found out the owners of the property have not paid the taxes since before 2017 and with fees there’s a balance of almost 15k to be paid to the town, I also found out the name of the owners but the billing address is the vacant house ,! How do I find an address or a way to contact them? Base on my online research the property was last sold on 1/2016 for $442,900 I think the property has been vecant for like 8 years , and it’s a 2 family house . I think repair will be like 65K