The owner plans to appeal the decision, his lawyer said.
The owner of the Hopper-Gibbons House sued the city to keep a fifth-floor addition on the building.
The owner of a Chelsea house used in the network that helped slaves escape sued the city
The Hopper-Gibbons House's owner may go to court to fight ruling from city board.
The city will hear an appeal of its order to remove the fifth floor of Chelsea's Hopper Gibbons House.
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