Green Street Housing and TM Associates Development, two of Maryland’s largest affordable rental housing developers, will host a groundbreaking ceremony April 4 at the Village at Blenheim Run in Havre de Grace. The event will be held at the Village at Blenheim Run, 1921 Pulaski Hwy., at noon. Refreshments will be provided. Parking is available at Swan Creek Shopping Center just west of the construction site.