That is of course a use case, but the stated use case is nearly the opposite. > [Using this data,] City leaders and community groups could then facilitate part

That is of course a use case, but the stated use case is nearly the opposite. > [Using this data,] City leaders and community groups could then facilitate participation from residents in decisions that affect their families and neighborhoods. Based on new forward-looking knowledge, city leaders and community groups could co-design policies that secure benefits for low-income and vulnerable families in both rising and falling markets. Of course, if the data exists in a public arena, property investors will avail themselves of it. Unlike the present though, existing owners and tenants will have the capability to be equally in on the knowledge of the incoming gentrification effort and extract maximum value. At a city level, this gives the opportunity for governments to react as well - diverting resources to or from areas that may no longer need them, changing police staffing in advance of shortfalls, prioritizing correction of crumbling infrastructure before a new area becomes saturated (making corrections more costly,) etc. I suspect that the accessibility, format and cost of the data will determine which use cases this data will end up benefitting the most. If the data is open, then it could be the cause of increasing equality in these transactions, while if it were sold for $500 a zip code, would likely be more inclined to benefit only those who can already afford it.