The proposed National Building Code (NBC) 2020 and British Colombia Building Code (BCBC) 2018 both introduce EMTC for buildings up to 12 storeys. However, the current cost analysis of Cross Laminated Timber (CLT) structures results, based on estimates for current projects in GHL’s office, is repeatedly in the range of 5% to 10% above that of concrete construction. In order to minimize construction cost and reduce cost premium, this project explores optimization of the thickness of the CLT assemblies.