Sheffield Construction Co 678 Ritchie Hwy Severna Park, MD 21146 Phone : (410) 647-1185 Business Category Builders & Contractors Home Builders General Contractors-Residential Buildings Jnj Improvements Inc 678 Ritchie Hwy # A Severna Park, MD 21146 Phone : (410) 647-1185 Business Category Builders & Contractors Home Improvements Repair & Maintenance Remodeling & Repairing Building Contractors General Contractors-Residential Buildings Construction Estimators Services           Decks, Kitchen, References Available