The city of Memphis and Shelby County, Tenn., are expected to adopt stricter building codes that could add 20-25 percent to the cost of building a home. The new codes primarily deal with tougher seismic requirements.
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Links:
[1] http://www.bizjournals.com/memphis/blog/morning_call/2012/06/new-shelby-county-building-codes-could.html