S J Martenet & Co Inc of Rosedale

S J Martenet & Co Inc of Rosedale is a surveyor in Rosedale, Maryland, serving the Baltimore region with expertise in property lines, boundary disputes, and riparian rights. The firm has provided land surveying services since 1849, maintaining a long-standing presence in central Maryland. It is recognized for its deep knowledge of Maryland’s land tenure system and its extensive archives, which include over 70,000 surveys, many of which are digitized and accessible online. The firm also serves as the custodian of records from four other regional surveying firms, preserving historical survey data and contextual materials such as title abstracts and government actions. Its archives are noted for their breadth, depth, and accessibility, supporting accurate land information across generations.

The firm traces its origins to 1849, when Simon J. Martenet began working with Thomas P. Chiffelle, a West Point-trained surveyor and former Baltimore City Surveyor. Chiffelle operated a surveying business in Baltimore as early as 1843, and Martenet joined his firm in March 1849. While records from the early years are sparse, the firm’s historical continuity reflects a legacy of surveying excellence. The firm’s archives, including old maps and survey records, are considered a national benchmark for how survey archives should be maintained. The firm emphasizes the importance of historical context in resolving modern land disputes, using archival data to reconstruct property lines with greater accuracy.

The firm is located at 14 West Franklin Street in Baltimore, Maryland. It operates from a central office in the city, serving clients across the region with a focus on historical land records and survey accuracy.