Professional licenses

Mr. Sielaff and our senior engineers are professionally licensed in 49 United States (with peer-review Hawaii), including Washington D.C., Guam, Puerto Rico, Virgin Islands, Bahamas and Canadian Provinces: British Columbia, Alberta, Manitoba, Saskatchewan, Yukon. Nova Scotia, Ontario, Newfoundland and Labrador.






International Code Council 

Structural Engineers Association of Idaho

Timber Framers Guild

Timber Framers Engineers Council
Building Contractors Association

Builders System Council

National Association of Home Builders

Log and Timber Homes Council

International Log Builders Association

Structural Insulated Panel Association

Professional Registrations and Accreditations


812 S. La Cassia Dr.

Boise, Idaho 83705


Tel: 208-345-8941

Fax: 208-345-8946

  • LinkedIn
  • Facebook

© 2019 by Tamarack Grove Engineering PLLC. Proudly created with