Progression is an economic principle of value that states that, between dissimilar properties, the value of the lesser property is positively affected by the presence of the higher quality property. Progression is nonconformity that enhances value.
The principle of progression states that when there are two dissimilar properties, the value of the better property is adversely affected by the presence of the lesser quality property.
Progression is non-conformity that increases relative value in a neighborhood. The value of inferior houses tend to be pulled up because of the presence of superior houses.
It is generally considered wise to buy the smallest house in a neighborhood. The presence of superior houses (larger houses) with have a positive effect on the value of the smaller houses.