Managing Partner
Project Manager, Architect, P.E.
515-528-8178
C:515-868-8101
Sgrasso@gtgcompanies.com
Office & Accounting Manager
Tracyg@gtgcompanies.com
Project Manager
C:515-505-0910
Jessicar@gtgcompanies.com
JVaughn@gtgcompanies.com
Associate Project Manager
C:515-478-0132
Kvanpelt@gtgcompanies.com
Architect
C:641-891-1122
Tylerb@gtgcompanies.com
Superintendent
515-681-9036
gregs@gtgcompanies.com
515-203-0088
chrisd@gtgcompanies.com
Carpenter
ShaneS@gtgcompanies.com
GTG Companies
6505 Merle Hay Rd. Johnston, IA 50131
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