Jersey City-based Pronti Construction is proposing to redevelop the former three-story Ladder 10 Fire Company building at 520 Palisade Avenue, located in The Heights section of Jersey City. The structure would be expanded into a six-story, 17-unit mixed-use property, Jersey Digs reported. There will be 2,000 square feet of retail space on the ground floor, followed by residential units, likely rentals, on the floors above. Amenities would include a 10-car parking garage and a rooftop terrace. G3 Architecture is the architect. The project requires multiple variances, which must be approved by the city’s Zoning Board.