Ask the person directly for their address
Check information they have publicly shared themselves
Look at contact details they provided in emails, messages, or business cards
Use mutual contacts if they are willing to share it
Check public records only where legally accessible and appropriate
Use official directories or listings if the person has opted in
Search their business website or professional profile for a listed address
Review shipping labels or invoices they have legitimately given you
Contact them through known channels and request their current address
If it is for a legal or safety reason, contact the appropriate authorities or a licensed professional