S J Martenet & Co Inc of Rosedale

S J Martenet & Co Inc of Rosedale is a surveyor in Rosedale, MD. The firm traces its origins to Simon J. Martenet, who began his surveying career in March 1849 working under Thomas P. Chiffelle, a West Point-trained surveyor and engineer who had been active in Baltimore at least since 1843 and served as Baltimore City Surveyor from 1851 through 1854. The firm has been part of Baltimore's development since before the Civil War and operates today as S.J. Martenet & Co., Inc., holding the distinction of being the oldest continuously operating surveying firm in the nation. The practice focuses on property lines and title-related land matters, including boundary disputes and riparian rights issues, and works within Maryland's land tenure system. Beyond active surveying work, the firm maintains an extensive archive of more than 70,000 surveys covering central Maryland, with most of the material digitized and accessible online. It serves as the record custodian for four other regional firms and holds sizable amounts of contextual material such as official government actions, title abstracts, and historical compilations, all indexed and available for research. The office also publishes old maps and operates Martenet Press, and its archives have drawn national recognition as a model for survey record-keeping. The office is located at 14 W Franklin St. Hours run from 9:00 AM to 5:00 PM, Monday through Friday, and the firm can be reached by phone at (410) 539-4263 or by email at [email protected].