I don't see anyone asking the question that to me is the elephant in the room:

How are you preventing hallucinations and plainly false information being sent to buyers engaging in what's likely to be one of the largest financial decisions of their life? Beyond just leading to a bad UX, what's your legal exposure there?

You mention providing comps, there's a LOT of local knowledge that goes into that. How are you automating that? Other solutions I've seen like Zillow are pretty laughable. In some neighborhoods a 2 car garage is worth six-figures despite not contributing to square footage, because pulling permits for a new one is basically impossible, just as one local example.