Start with the owner record. PropertyRadar's 4.9 release notes describe "contact information for authorized representatives or signatories behind LLC's, corporations, and trusts." Its guide to finding LLC owners says the principal is included for "many of these properties," so some records show only the company name.
When the record shows only the company, read a document the LLC signed. The deed that conveyed the property to the LLC is signed by the seller, so it won't show who signs for the LLC. Read it anyway for a mailing address or a care-of name. Then look for a document the LLC itself signed, such as a loan against the property or a later deed out of the LLC. Someone signed those on the LLC's behalf. The same guide gives the route in the app: open the property, go to Transactions, and open the Loan Document. The charge is shown when you purchase it. Copy the signer's printed name and title, the document date and the document number.
Then pull the LLC's filing in the state where it was formed. Texas requires the certificate of formation to name each initial manager, or each initial member when the LLC has no managers, with an address. Delaware's statute requires only the company name and the registered office and agent. Members may add "any other matters" they choose, so open the certificate before assuming it has no names.
The registered agent is a different kind of name. An agent receives legal papers for the company, and that role alone shows no part in decisions about the property. Note the agent and the registered office, since the office is still a mailing route. Treat the agent as a lead only when the name also appears among the managers or on a recorded signature.
You may now have more than one name. A person who appears as a manager on the filing and as the signer on the loan is the strongest lead. A signer alone comes next, since that person acted for the LLC on this property on the document date. A formation-date manager with no recorded signature comes after that. Each one is a lead, because the documents show a role on a past date and can't show who holds it now.
To reach the lead, search the person's name. PropertyRadar's owner lookup takes a person's name, which can return a mailing address and other holdings. Its owner profile lists owner name, ownership role and mailing address where the underlying sources supply them. When you make contact, ask two things: whether they currently handle decisions about the property for the LLC, and if they don't, who should receive an offer.
Keep what you found in one row: the property and APN, the entity, each name with its source and date, the role as written, and the result of the first contact.