Sean P. Klammer

Associate Attorney

Sean is a litigator who concentrates his practice in the areas of construction and real estate law, where he represents various stakeholders, including developers, project owners, general contractors, and subcontractors. In addition to his construction and real estate litigation practice, Sean also possesses significant experience litigating a variety of other complex commercial and cybersecurity disputes.

Sean assists clients with the preparation and review of construction contracts so that his clients’ rights and interests are fully protected before the project begins. When disputes do arise, Sean works collaboratively with his client and the other project participants to arrive at a cooperative resolution without resort to litigation.

When problems can’t be resolved cooperatively, Sean has the experience necessary to aggressively litigate all manner of construction disputes, including payment and breach of contract claims, construction defect claims, and mechanics’ lien and bond claims.

Sean’s real estate practice focuses on the litigation and enforcement of property rights, including purchase and sale agreements, easements, and eminent domain disputes. 

Prior to joining KSP, Sean worked as a litigator at a mid-sized Ohio firm where he focused his practice on commercial disputes and data privacy and security matters.

Responsible Ohio: Successes, Failures, and the Future of Adult Marijuana Use in Ohio, Ohio State Law Journal Furthermore 79 (2018)


The Ohio State University (2012)

The Ohio State University, Michael E. Moritz College of Law (2018)

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Kelly, Souza, & Parmenter, P.C., Attorneys at Law (KS&P Law) is a fast-growing firm focused on delivering exceptional service and successful outcomes for our clients.

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