Price per unit area is the thing that's more or less fixed based on similar homes. You can definitely see a 3000sqft home next to an 800sqft home, if the neigh

Price per unit area is the thing that's more or less fixed based on similar homes. You can definitely see a 3000sqft home next to an 800sqft home, if the neighborhood grew organically. The price difference in that case could well be that stark. In the US, many neighborhoods (esp. newer) were constructed all at once by a single developer. This is how you get the "sameness", and finding a significantly cheaper home is not possible in these places. In other places, it can be.