Finding Property Owners

[Austin Works]

What are some good sources for finding contact information for owners of unoccupied properties ? I've checked the tax assessor's website, but it has the owner's mailing address as the address of the vacant property. 

[Trent Currie]

They might have mail forwarding. Mail an envelope to the person's old address with "return service requested" above the delivery address. Send it . When they can't deliver it at the current address they will sometimes attach the new address to the mail.