The site of Williamsburg’s iconic ’50s-style diner on Wythe Avenue — a longtime lodestar in one of the neighborhood’s hippest corners — has officially traded hands for $12.5 million.

The large corner lot, historically occupied by the steel frame of the shuttered Wythe Diner, is set to host a six-story mixed-use building. City records posted on Thursday confirmed the long-awaited sale.

The $12.5 million deal closes a colorful chapter for the property, during which it lived many lives — as a classic railcar diner, a Mexican eatery, a coffee shop and even a Chanel pop-up . 5

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The development is expected to include 5,000 square feet of ground-floor retail and 28 apartments above, according to a press release shared with The Post by commercial real estate brokerage TerraCRG. Plans

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