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Abstract. This paper introduces a low-cost and efficient approach to generate 3D models for as-built buildings. Image-based modeling as a passive is an alternative of 3D model generation without a threat of destructive impact to the modeled object. This paper demonstrates the applicability of image-based modeling for as-built buildings in the main campus of National Chung Hsing University. The 3D model of campus was established by image-based modeling technology due to its low cost, time-efficiency, convenience, and low requirement. A consumer camera (Canon PowerShot S100) mounted on a UAV and held in hands was used to capture aerial photographs and side shots. The 3D printed product of NCHU campus as a gypsum statue was generated through a 3D printer, color CometrueJet T52, for demonstration.