|Architecture differs by geographic location as well as design period. It is always remarkable to me how dramatic a simple style change in a roof or a porch can change the entire look of a home or neighborhood.
Functionally all houses are much the same. Inside there are a kitchen, family room, bedrooms and baths. However, all neighborhoods take on different looks or styles driven often by changes in exterior. Neighborhoods will have in common a roof style, a siding material, or a porch design. This is of course because the same developer/builder built the neighborhood and in the same period.
These few pages offer examples how single design changes can make dramatic differences.