We are a building envelope and curtain wall design, consulting, and engineering firm that perform services nationally and have representative professional engineers in the majority of the US and affiliate partners in Canada. If you or your client require registration in a location in which we are not registered, please contact us.

We currently have professional engineering registrations in the following states:

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  • Alabama
  • Arizona
  • California
  • Colorado
  • Connecticut
  • Delaware
  • District of Columbia
  • Florida
  • Georgia
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kentucky
  • Louisiana
  • Maine
  • Maryland
  • Massachusetts
  • Michigan* 
  • Minnesota
  • Missouri
  • Nebraska
  • Nevada
  • New Hampshire
  • New Jersey
  • New York*
  • North Carolina*
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon
  • Pennsylvania
  • South Carolina
  • South Dakota
  • Tennessee
  • Texas
  • Utah
  • Vermont
  • Virginia
  • Washington*
  • West Virginia
  • Wisconsin

* Professional engineering registration through Wheaton & Sprague Engineering affiliated companies

We have multiple staff members who have Specialty Engineer status through The Department of Planning and Development for Seattle, Washington.