ALL the time!
Especially if its sitting vacant.
Prior to move in
Before Touring (dont walk into a dark unit with prospect) it does not show well and has already left a bad taste even when lights get flipped on.
Once a day if no appointments (morning to spiff and open)
Depending on the area before leaving for the day. (make sure you do not walk into a squatter while trying to tour)
Walk all access areas and surrounding areas of that unit. check flower bedding, grass, maint, issues etc.
The last thing you want is a Regional to come and walk your longest standing vacant to figure out why it is not moving.
You dont want to hear..
"Well this is why its not renting"
-Dead grass surrounding unit
-Poor tour path (trash etc)
-Cob webs on porch and landing lighting by units entry
-Unsightly patio/balconies surrounding vacant
-Maint. issues in unit
-Bad odor
-Not bright and airy