The second of two Phelan Buildings on the same site, the current building bears the name of one of San Francisco's most prominent early families. The first Phelan building was a 6-story, bay-windowed, mansard-roofed flatiron constructed by the elder James Phelan. Destroyed in the fire of 1906, it was quickly replaced by the present flatiron which, in size- alone, justified the 1907 Call headline "Huge Phelan Building Already A Landmark." It was instantly one of the most prominent and preeminent office structures in San Francisco and, in keeping with Phelan's strident advocacy of the City Beautiful Movement and the Burnham Plan, it greatly dignified both Market Street and the retail district with its two monumental facades. Its prominence was further heightened by the choice of glazed cream terra cotta. When built, it was probably the largest structure in the city clad with this favorite reconstruction material.
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Handsomely detailed and spectacularly sited, the building remains one of the most prominent on Market Street and a superb example of the dwindling numbers of flatirons which were once a feature of Market Street.