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The hidden costs of construction projects were mysterious and challenging to quantify and predict. It had not yet resulted in a completed system to set for the best control among China's real estate developments. An estimated 80% of construction projects faced hidden cost problems in China, but there were no immediate unifying solutions for dealing with the situation yet. This paper analyzed the different research literature and quantitative survey in Huizhou City to identify the concepts and forms of hidden costs. Then summarized the factors affecting the progress of construction projects by laying out the potential cost management system of the Activity-Based Costing (ABC) model to match the hidden cost control factors. The conceptual framework of hidden cost control was formulated based on the influencing factors of contracting units, suppliers, designing plans, supervision, and social-economic-environmental issue were set to test the relationship of the cause of hidden cost. This study employed a quantitative survey through 285 local architects and designers of three Huizhou Design Institutes and obtained their viewpoints from those influencing factors. The results were overwhelmingly concluded that all influencing factors were correlated with hidden cost control. The ABC model would further examine these results for its feasibility of serving as a cost management mechanism to deal with engineering hidden cost control of real estate development in Huizhou City. Future studies for examining different cost management models would be necessary to resolve one of the critical cost uncertainties in China's construction process.