Located in Southern Maryland, COA Barrett is an environmental, engineering, land planning, surveying corporation that takes pride in shaping local communities. Our licensed surveyors and engineers have more than 90 years of combined experience working on site development projects that will shape the future for homeowners, government agencies, commercial business owners and residential communities. We provide the highest quality services to Anne Arundel, Calvert, Charles, Prince George’s and St. Mary’s Counties at competitive prices
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