A couple of years ago, I published this blog post:
When only a section of, for example, roof shingles or vinyl siding has been damaged by a covered peril, most homeowners policies, when viewed in isolation, only cover that specific direct damage. Even though replacing, say 10 year old, siding with new siding will lessen the value of the home because of the mismatch, most policies only cover “direct” damage, not the indirect or consequential loss in value.
Exceptions to this usually arise when there is statutory or case law that overrides policy language. For your future reference, here is a detailed article on this issue, along with a state-by-state listing of statutory and case law:
Thanks to Cliff Treese at Association Data, Inc. for providing this link.