More Than Property ManagementGet to Know Gumley Haft Property Management Managing to be the best. Some of New York’s most desirable coops and condos depend on the knowledge of Gumley Haft. Financial Management We are financial experts. As financial experts for NYC coops and condos, our clients rely on our advice for short-and-long term goals. Construction Management When you need construction. With our experience in pre-and-postwar restoration, GH may be your best capital improvement. Preventive Maintenance Start now, save money. Gumley Haft: When your building runs without missing a beat, saves money, and simply hums.