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According to SDCI, the City of Seattle contains 1,145 buildings with unreinforced masonry that could collapse in a major seismic event. While records are incomplete, the city estimates that about 11% of those have already retrofitted the building to address the issue. Another 68 of them are owned by various government entities. That leaves 944 buildings in private hands with unreinforced masonry: in total about 20,200,000 square feet, containing 10,400 residential housing units with 22,050 residents. Thirty seven of those buildings contain 1,559 designated affordable housing units.
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