Sam Brookham is a planner with PlanSmart NJ who studies the impact of stranded assets on local economies. Sam Brookham is a planner with PlanSmart NJ who studies the impact of stranded assets on local economies.

TRENTON, NJ—Stranded assets, mostly abandoned or nearly vacant office or retail properties, are a systemic problem and a redevelopment opportunity for New Jersey, according to Sam Brookham, a planner with PlanSmart New Jersey, which conducted an all-day conference for developers, planners, and policymakers at the state’s underused War Memorial building here Tuesday.