Sean Matsler

Practice Areas

Sean Matsler is a land use partner in the firm’s Orange County office. His practice focuses on securing entitlements for controversial and complex real estate development projects. Sean has successfully entitled tens of thousands of residential units and millions of square feet of industrial, office, and commercial uses.

Sean advises clients on compliance with the myriad of local, state, and federal laws and regulations that govern the development of real property, including local planning and zoning regulations, the California Coastal Act, and the California Environmental Quality Act. Sean guides his clients through the entitlement process, from site selection to project approval, and regularly appears before both state and local administrative bodies to secure approvals on behalf of clients.

Sean is a member of Cox Castle’s Management Committee and earned a spot on the prestigious OC 500 list by the Orange County Business Journal in 2024. This list honors the most influential leaders, innovators, and change-makers within the Orange County business community.

Professional Memberships

ULI Orange County/Inland Empire—Advisory Board member; Vice Chair, ULI NEXT

Executive Committee and Board of Directors, Building Industry Association: Orange County Chapter

OC Marathon Foundation Board of Directors

City of Newport Beach Bicycle Master Plan Oversight Committee

Member, Urban Land Institute (Sustainable Communities Initiative Council, Young Leaders Group)

City of Newport Beach Citizens Bicycle Safety Committee, 2010-2012

Law Day Committee, Constitutional Rights Foundation of Orange County, 2007-2012

Public Counsel Land Use Task Force, 2008-2012

City of Newport Beach Task Force on Cycling Safety, 2009-2010

Bet Tzedek Justice Ball Planning Committee, 2003-2006