About Company

S.J. Martenet & Co. is a historic Baltimore-based land surveying firm established in 1849 that specializes in boundary and title-related surveying services, including boundary surveys, topographic surveys, ALTA/NSPS land title surveys, construction support, subdivision work, condominium conversions, corridor assemblage, litigation support, title abstract assistance, easement creation, and elevation certificates. Martenet maintains an extensive archive of more than 70,000 surveys and related contextual records that the company leverages—alongside modern digital workflows and surveying technology—to resolve boundary disputes, clarify riparian and title issues, and provide authoritative land information for clients across central Maryland.

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