Community
Lochearn
Lochearn is a residential community with a local park on Patterson Avenue and a planning history shared with neighboring Forest Garden and Haywood Heights.
A neighborhood with shared local concerns
Lochearn appears alongside Forest Garden and Haywood Heights in a county community action plan. The document treats the three as connected residential communities with active neighborhood associations. It is useful historical context for the way residents organized around local conditions; its older demographic figures should not be treated as a description of today’s population.
Powdermill Run Park
The county parks directory identifies Powdermill Run Park as a ten-acre site at 3901 Patterson Avenue in Lochearn. It is a specific neighborhood destination, distinct from the much larger stream-valley parks elsewhere in western Baltimore County. The same street address may appear with a Gwynn Oak mailing label in county records, so the street number is the clearest way to match the entries.
Powdermill Run also appears in the county’s fiscal 2026 capital budget for tennis and multipurpose-court renovations. A funded project is not a notice that construction has finished or that a particular court is available that day. For residents following improvements, the park name and Patterson Avenue address provide the link between the budget entry and the place on the ground.