Skip to main content

James W. Sewall


Pine plantation Inventoried tree Physio-regions map

Appraisal & Inventory

The oldest forestry consulting firm in North America, Sewall provides a broad range of services to private, institutional, environmental NGO, and public sectors, including:

  • Forest & natural resource appraisal
  • Acquisition due diligence
  • Forest inventory
  • Forest modeling & harvest scheduling
  • Investment analysis and economic studies
  • GIS & Mapping
  • Satellite imagery & analysis
  • Land management
  • Litigation support

A recognized leader in resource valuation, Sewall has provided independent third-party due diligence in many major transactions across North America and offshore, including the largest private timberland sale in US history, comprising several million acres of commercial timberland and sensitive habitat from Florida to Michigan. Sewall also evaluates unique coastal properties, recreation lands, and resource-related commercial properties, conservation easements, and partial interests.

With Sewall natural resource professionals at offices in Maine, Minnesota, and South Carolina,, we serve clients throughout North America, Hawaii, South America, Central America, Australia, New Zealand, Europe, and Africa. Our staff has appraised over 100 million acres.

Sewall is an inaugural Remsoft Consulting Partner and progressive user of the Remsoft Spatial Planning System, delivering a range of forest modeling services to clients in forest investment, government, NGO, forest industry and utility sectors.

Clear cut

More Info

Natural resource appraisal and consulting (PDF)

Licensing Tree Appraisers, an article by Bret Vicary, ACF, PHD, MAI, in The Consultant

divide line


Bret Vicary, PHD,
Vice President
207 827 4456

Powered by Sewall