New York Post Chubb Group is in "advanced talks" to lease 250,000 square feet at 550 Madison Ave., a 750,000-sf office building in midtown Manhattan. Asking rents at the building, which had undergone some $300 million of renovations, recently topped $100/sf. The former Sony Building is owned by a venture of Olayan Group, Chelsfield and RXR […]

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