City records show that a $14,000 lien on the properties, 6624 and 6630 Quad Ave., was sold to New York-based Stonefield Investment Fund IV LLC in the tax sale held in May 2017. Under the state tax sale process, an investor that buys a lien on a property can move to foreclose six months later. The investor’s right to foreclose on the property lasts two years from the date of the tax sale.