Team

Leadership Team

We pride ourselves on consistent leadership with vast experience in the appraisal and information technology industries. Get to know our executive team.

Jim McCathern Chief Executive Officer

Jim is a founding partner of Patriot and has been involved in the Tax Assessment industry since 1980. He served as Patriot’s Vice-President from 1985 to 2004, and Chief Executive Officer since 2004. Holding a Massachusetts Certified General Appraisal License, he has been a Project Manager and a Commercial and Industrial Valuation Analyst for hundreds of Tax Assessment Revaluation Programs. Jim has considerable court experience as an expert witness for litigation involving Real Estate Valuation. Overseeing Patriot’s CTO, Development & Marketing as well as all Business Partner Relations, he serves as the Project Sponsor on all major software implementations.

Mark Harrell Chief Operating Officer

Mark is one of Patriot’s proud founders and has been involved in the mass appraisal industry since 1978. His experience as a property inspector, review appraiser and project manager has helped to make AssessPro a solid CAMA system the Assessor can trust to value property easily and equitably. Mark has participated in and led hundreds of certifications and revaluations throughout his career and lends his considerable expertise to the entire Patriot team.

David Zion Financial Operations

David provides Patriot with the business leadership and knowledge required of a successful company. David's expertise in contract administration and financial matters provide Patriot Properties with a solid financial footing.

Ellis Withington System Architect / CAMA SME

Ellis is our current CAMA SME, having previously served as both Chief Technical Officer and also President of Patriot Properties from 1985 to 2004. Over that time he helped grow the Assess Pro platform, and is the System Architect of AssessPro 5.0. Ellis is a recognized industry expert in the areas of real estate appraisal, property tax consulting, qualified expert testimony, investment analysis, and real estate appraisal software development.

Joe Napoli Chief Technology Officer

Joe is responsible for leading the development groups at Patriot Properties including refining and enhancing the AssessPro suite of software products, supporting previous installed versions of our signature CAMA application, implementing new partner projects and managing our path to the future with our Web Application development team. Joe is expert in designing and developing multi-tiered client-server business applications. He has worked in tandem with Ellis Withington to develop standards and business processes for AssessPro 5.0’s .NET development platform.

Nathaniel Weiss Vice President - Implementation

Nathaniel is responsible for leading the product management and implementation groups at Patriot Properties, and working closely with development to introduce industry-leading CAMA solutions to the market. Nathaniel has an entrepreneurial background, working with high-performing teams on all areas of go-to-market planning and operations.

Built on a contemporary technology stack, AssessPro offers reliable tools for effective reporting to state governing bodies.

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Very user friendly. AssessPro helps to create models efficiently and the customization gives flexibility.
Michelle Franklin
County Property Appraiser, St. Lucie, FL

They’re aware of our needs and very responsive, their customer service stands out...
Bob Maurer
CAMA System Administrator, Oklahoma County, OK

Having GIS, sketches, pictures and historical data within each account is very helpful.
Michele Mastrangelo
City Assessor, Methuen, MA

Handles Florida’s complicated property tax system, and has a solid history of producing compliant assessment rolls.
Roger Suggs
Clay County, Florida Property Appraiser

Comprehensive and incredibly stable, AssessPro does everything we need it to.
DeAnn Brosman
Assessor, Appleton, WI