About Company

S.J. Martenet & Co. is a historic Baltimore-based land surveying firm founded in 1849 that provides boundary and title-related surveying and title solutions, offering services such as boundary surveys, topographic surveys, ALTA/NSPS land title surveys, construction support, Baltimore City land subdivision, condominium conversion, corridor assemblage, litigation support, title abstract assistance, easement creation, and elevation certificates. The company maintains an extensive archive of more than 70,000 surveys and supporting contextual records and combines that archival depth with modern digital workflows and surveying technology so S.J. Martenet & Co. can resolve boundary disputes, clarify riparian and title issues, and serve as a primary source of authoritative land information for central Maryland.

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