Background: In preparation for July 2019 rollout of competency-based design (CBD) in Canadian neurosurgery residency training, the University of Calgary launched a pilot-program of five representative EPAs using the One45 program. Our study objectives were to examine the uptake of CBD with residents and faculty and to quantify CBD implementation barriers. Methods: Phase one of the One45-based CBD pilot-program launched on November 1st, 2018 and ended on January 8th, 2019, after which a questionnaire was sent to each participating resident. The questionnaire examined number of EPAs initiated, measures of favourability, importance, ease of use, and barriers encountered. Results: Results obtained from the survey show 93.8% response rate (15/16 residents). 66.7% of residents feel that CBD is moderately important or higher to their education. Over the 10 study weeks, there were only 8 completed EPAs (expected was 50), five of which were completed by a single resident. Major expressed barriers of implementation of CBD were time involved (50.0%) and technical unfamiliarity with the platform itself (50.0%). Conclusions: This study demonstrates the critical importance of piloting a CBD program prior to official implementation as immediate buy-in was significantly slower than anticipated. Technical and time barriers exist which need to be rectified in advance of July 2019.