To get the key to a house in Riften, where a Travelling Pilgrim (Vampire) was staying whom I had to dispose off unobtrusively, I had to buy the house, in order to buy the house I had to favours for the Jarl, did them, but no offer came, did favours for the people in town, still no offer! Cheapskate!!!
I checked the sites and the only advice I can garner is to use CC. I've been staying away from console commands, so is this really the only option?