The article talks about being able to reuse building designs in a neighborhood or nearby town. This got me thinking about copyrights on building design.
Once an architect or engineer makes a design, is that his intellectual property, and it can't be duplicated? Are blueprints filed in a copyright office somewhere?
I was just thinking that homes in suburbs, for instance, are all pretty similar (at least in the eastern United States). Do the companies that build houses on these properties all use the same blueprints, or do they all have different architects who just happen to design houses that are very similar, but different enough not to cause copyright infringement?
Suburbs were just the example that came to mind, but I've seen office buildings in different cities that look alike, too.