It looks like from canon examples, Accio works on:
Summoning things that aren't yours (Hermione summoning books about Horcruxes that Dumbledore took out of the library in DH)
"Well... it was easy," said Hermione in a small voice. "I just did a Summoning Charm. You know – Accio. And – they zoomed out of Dumbledore's study window right into the girls' dormitory."
Summoning things you aren't sure of their exact location (Molly summoning twins' toffees in GoF):
'Accio! Accio! Accio!' she shouted, and toffees zoomed from all sorts of unlikely places, including the lining of George's jacket and the turn-ups of Fred's jeans.
Summoning things that are "nailed down" (Twins summoning their brooms before escaping Hogwarts in OotP)
And before Umbridge could say a word, they raised their wands and said together:
Harry heard a loud crash somewhere in the distance. Looking to his left, he ducked just in time. Fred and George's broomsticks, one still trailing the heavy chain and iron peg with which Umbridge had fastened them to the wall, were hurtling along the corridor towards their owners; they turned left, streaked down the stairs and stopped sharply in front of the twins, the chain clattering loudly on the flagged stone floor.
Summining things from a fairly big distance (Harry summoning his Broom to the TriWizard tournament's first task from the castle).
As such, is there any canon explanation for why people like Mundungus (or Tom Riddle) who have very little respect for the law or private property don't simply Accio whatevertheheck they want to steal out of people's homes?