Monique Hailer - CENTURY 21 New Millennium Southern Maryland Waterfront & Real Estate Services!    Monique Hailer, Your Southern Maryland Realtor! Serving Calvert, Charles and St. Mary's County in The Southern Maryland region! Monique is originally from Northern Virginia, a Calvert County resident for more than 17 years, Monique Hailer is Southern Maryland Realtor and  specializes in residential properties throughout Southern Maryland. Monique has listed and sold homes ranging from affordable to highly exclusive, including many recognizable waterfront