Contact

Sewall provides professional engineering, survey, geospatial, and geospatial forestry consulting services, providing end to end delivery for infrastructure design projects and specialized forestry assessment services. We know that to provide the most comprehensive service for our clients, our team must work to understand all of a project’s goals and how they interact with one another. To inquire about Sewall’s suite of services please see our office locations and contact us with the form below.

James W. Sewall Company Corporate Headquarters
77 Exchange Street, Suite 401
Bangor, Maine 04401

(800) 648-4202
(207) 827-4456

Treadwell Franklin Infrastructure/Sewall Office
14 York Street, Suite 102
Portland, Maine 04101

(800) 648-4202
(207) 817-5465



Infraspect/Treadwell Franklin/Sewall Office
200 International Drive, Suite 195
Portsmouth, New Hampshire 03801

(800) 648-4202
(727) 372-2900

Caribou, Maine
(207) 492-1014

Summerville, South Carolina
(843) 606-1022

Peachtree City, Georgia
(770) 683-1700