About Monarch White Marsh 8110 Perry Hall Boulevard Baltimore County, MD This month construction is expected to begin on an $80 million senior living community project called Monarch White Marsh at 8110 Perry Hall Blvd. The project will be a part of the 113-acre mixed-use development Villages of White Marsh. 188 independent living, assisted living and memory care apartments are planned to be built and will be ready to lease by late 2023. The 4 story structure will be attached to a 20-acre park via a walking bridge, providing access to 40 acres of open space and walking trails.