Maybe a bit off of this particular tangent but in regards to the OP and 20 Min. AI appraisals...
I was at a wedding over the weekend and was talking to a young man, 35 ish, that is deeply involved in Amazon's data dept. He was an MD Radiologist with a comp. science degree and Amazon hired him for their IT dept. One of the things that Amazon does is collect a huge amount of data from its trucks. They have cameras that record everything. Everything from street views to neighborhood condition to every detail on every house they deliver packages to. He says Amazon isn't using it, YET, but they are selling it to other interested parties, including valuation services, insurance companies, etc.
At the rate they're going, it won't be a 20 min AI appraisal, it will be more like a 30 second report. It will take longer to input the property address than it will to generate a report.