What lifted my boat was a house 3 doors down selling for 10k less than I paid even though my place is 50% bigger house and a bigger lot, thanks to that I was able to refi out of PMI and can now see a comfortable retirement with no mortgage on the horizon. I think that falls under the realtor mantra of “location,location,location”. I f the house had been more than a mile away it may not have had as big an effect on the appraisal.