Possible Clues:

• Took care of a neighbor's home, say
• Watched someone's place
• Watched a friend's home, say
• Helped a vacationing friend, in a way
• Provided home security, in a way
• Cared for a home while the owner was away
• Filled in for a vacationer, in a way
• Minded the mansion, e.g.
• Old applications for investment in capital protection tended to property
• Watched things