The 85-foot SoMa office building planned for 505 Brannan Street could eventually triple in height to 250 feet by adding a massive addition on top after it is built. New height limits for that part of SoMa would allow the project to grow, although it is complicated to add stories on top of a building once it has been constructed. Developer Alexandria Real Estate Equities filed plans for the expansion with SF Planning this week. [SF Business Times]
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