Answer:
This is an example of community policing.
Explanation:
The purpose of community policing is to reduce criminal activity by, among other actions, having officers develop ties and work closely with the community, as well as developing the community through the implementation of programs and activities. By focusing on problem-solving, community policing can help reduce crime rates. Reclaiming abandoned houses, as described in the question, is a way to prevent those same houses from being used by drug dealers and users.