Williams Equities secured a $155 million refinancing deal for their Flatiron District property at 28-40 West 23rd Street. The century-old buildings will undergo upgrades, including a roof deck and penthouse office suite. Home Depot, occupying part of the space, extended its lease. The property sits in the historic Ladies’ Mile, once a luxury shopping area. Ackman-Ziff and Citigroup facilitated the deal. Details on occupancy rates and rents remain undisclosed.