As shown in the Tables 1–3, the precision result of feature-based matching approach is the best since most of the identified candidates are correct. On the other hand, Table 2 shows that the recall result of the direct matching approach is better as most of the elements neces-sary to be retrieved are correctly identified. In general, the feature- based matching approach achieves the most robust building elements retrieval results as the overall precision, and recall rates are both above 90% in all test datasets.