From 2009 to 2014, Seattle had a big increase in the building and creation of new SRO units designed to be rented at market rates, which had an average monthly rent of $660; In 2013, for example, 1,800 SRO units and microapartment units were built. In 2018, the media depicted the increasing popularity of micro apartments as a new trend; however, an article about Seattle in "Market Urbanism Report" states this is a "reenactment of the way U.S. cities have long worked", as individuals seeking "solo living and centralized locations" are willing to accept smaller apartments even though the per-square-foot prices may be higher than some larger units. The report states that 2018-era micro apartments were known as SROs in the early 20th century, and they housed "rich and poor alike" (although the rich lived in live-in luxury hotels and the poor lived in "bunkhouses for day laborers"). Neighborhood groups in Seattle have criticized new micro apartment SRO units, arguing that they "harmed community character and provided ... inhumane living conditions; due to these concerns, the city passed regulations that outlawed micro apartment/SRO construction.