Ask the person directly for their address
Check your own records if you already have a legitimate reason to have it
Look through public professional profiles or business websites
Use official directories or public records where legally available
Search social media profiles for publicly shared location details
Contact mutual friends, family, or colleagues if appropriate and lawful
Use a mailing address they have publicly provided for business or correspondence
Hire a licensed private investigator where legal and appropriate
Contact relevant organizations that may have their current contact information, if authorized
Use government or property records only when legally accessible and for lawful purposes