Union County is a fully urbanized county in northeastern New Jersey, with no rural land and a housing stock that skews heavily toward pre-1980 construction. Towns like Westfield, Cranford, and Summit contain large numbers of homes built before 1960 that now require electrical modernization to support today's household loads. Elizabeth and Linden have dense urban neighborhoods with older two-family and multi-family housing where original fuse boxes and undersized service entrances are still common. The county's mix of walkable downtowns, established residential neighborhoods, and active commuter rail lines creates a property type range that spans single-family Colonials on quarter-acre lots to attached multi-family buildings on tight urban blocks.