Contact
We have several offices nationwide enabling us to work with clients locally, nationally, and worldwide. Contact your local Collins team by selecting your location above, and let us know how we can be of service to you.
For our subconsultants and vendors:
- Beginning in 2019, please submit your invoices electronically to AccountsPayable@collinsengr.com.
- Subconsultants’ billings must include the Collins project number on the invoice and be submitted by the 4th of each month to be included on the current month’s pay request.
- If you have a question regarding the details of your invoice, please follow-up with your Collins contact.
Chicago Headquarters
123 N. Wacker DriveSuite 900
Chicago, IL 60606
Virginia (Virginia Beach)
5257 Cleveland StreetSuite 106
Virginia Beach, VA 23462
New Hampshire
650 Islington StreetSuite 1
Portsmouth, NH 03801
South Carolina
5955 Core RoadSuite 522
North Charleston, SC 29406
Virginia (Fairfax)
10201 Fairfax BoulevardSuite 530
Fairfax, VA 22030
Virginia (Newport News)
745 Bluecrab RoadSuite B
Newport News, VA 23606
Washington (Seattle)
506 Second AvenueSuite 1400
Seattle, WA 98104
Wisconsin (Green Bay)
2149 Velp AvenueSuite 203
Howard, WI 54303
Wisconsin (Milwaukee)
2033 West Howard AvenueMilwaukee, WI 53221