Curious about which is next door to the modern home - is it a modern home with a pool, next to a 1950s home? Or is it a modern home next door to a house with a

Curious about which is next door to the modern home - is it a modern home with a pool, next to a 1950s home? Or is it a modern home next door to a house with a pool, in a different neighborhood than the 1950s house? In the past, I've heard that a house's value can maximize at 140% of the value of its neighbors, so a 1950s house in the same neighborhood as the modern house might drag down the modern house's value.