Since we are now arguing the absurd I have amended my assumptions to preclude having to move to each and every neighborhood you appraise in.
You could always try to respond to the question in good faith.
I did respond in good faith,
it was you that threw in the silliness.
IAll I'm asking about is the geographic variable.
How hard do you think it would be to figure out if a 1500sf dogbox on a 7000sf subdivision parcel was typical for it's location?
Like all appraisal answers, that depends on many factors, typical of all properties whether listed and sold or not? You would not have a clue if you were not Geo-competent and knew the neighborhood. Typical of what's sold and listed, maybe, but then you would not know if the majority of the neighborhood is something more stable in occupancy, than what has been sold and listed. And then we have to question if the subdivision is similar to other subdivisions, which you still need Geo-competency to know, and, you also need to know if your 1500sf dogbox on a 7000sf subdivision parcel is in proximity to the area's largest employer that just announced a layoff, which, you also would not know, without Geo-competency. And, sadly, you would not know if much of the shadow inventory in a neighborhood has recently become off market rentals, or if your dog box is next door to a nuisance neighbor, or is stigmatized.
So how hard is it to know these things? Depends on the amount of research needed to identify the nuances. Can it be done? Sure, drive on over to the neighborhood, take a look, speak to the neighbors and the agents, read the newspapers, talk to he waitresses at the local diner. Do able, but time and money are always a factor. Could I "figure out" your neighborhood? Most definitely. Would anyone sufficiently pay me for the time and expenses to do so? Not for an SFR. Could I figure it out just cause I'm bored and have nothing better to do? probably not, because there is no motivation, nor reason that would compensate for the opportunity cost, lost, by not being available in the areas I already have competency in.
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