This mod was suggested by Ice_Bound as an annoyance when the Dragonborn follows Hadvar out of Helgen.  After talking with Alvor, he tells the Dragonborn to take anything you need, however, he does not give you a house key and sometimes locks his door. This means you must break into his house to get back in.

This mod changes the dialog option where Hadvar tells you you may take anything.  Now he will give the player a key to his house if the player does not have one.