Issues Contacting Owners Through County Records

[Tyler Shane Martindale]

I live near several vacant lots that are not on the market. I would like to contact the owners about making an offer, but encountered some issues with my county records.

The first set of lots belong to someone who passed away 15 years ago, and do not list the current owner or a living family member's contact information. How can I go about finding who to contact?

The second set of lots shows up on records as owned by a Nevada-based LLC. Searches for the LLC though yield results saying that the LLC is "permanently revoked." Who could I contact about purchasing these properties?

Thanks in advance for any help.