The Pros and Cons Of Non-Conforming Properties

Non-conformity can work to the advantage or disadvantage of the owner of the non-conforming property.
A house that has not been well maintained but is in a neighborhood of well kept homes will benefit from the overall good impression created by the neighborhood and its desirability. This is an example of the principle of progression.
A House that has been meticulously maintained in a neighborhood of homes in a state of disrepair will suffer from the generally unfavorable impression created. This is an example of the principle of regression.