Is Charleston the most undervalued U.S. city for housing costs? So says a new analysis from Smart Asset (www.smartasset.com). As quoted in today’s Post and Courier, “We estimate, given the quality of life available in the Holy City, that home prices in the area should be around $294.40 per square foot. According to data from Zillow, homes can actually be bought for $106.75 per square foot, for a savings of $187.65 per square foot.” Take that San Francisco!