感觉300多块的价格很便宜呢，把我的敲墙报价发给你参考一下吧To supply materials and labour to: a) demolish L-shape RC wall (4.1m x 2.6m) in store room including make good existing flooring and wall & HDB submision, b) b) hack one new door opening at common room, c) c) seal up existing door opening at common room, d) d) construct & make good full height wall at new master room entrance, e) e) hack off existing skirting at 2 rooms, f) f) clear off debris to offsite area till completion. 这个报价是$1200，当然这个价格是经过main contractor赚过一手的了，sub-contractor直接报应该比这个便宜，你需要的话我可以给你sub-contractor联系方式。