prolongation costs meaning in English

工程延误引致的额外费用

When examining the subject " construction of government office buildings " , the committee are seriously concerned that due to the change in the allocation of office space of the cheung sha wan government offices from the architectural services department to the rating and valuation department ( rvd ) at short notice , the submissions of the fitting - out plans for the rvd were delayed , resulting in the grant of extension of time to the contractor , and the estimated prolongation cost of $ 3 . 27 million
在研究有关“政府办公楼宇的建造工程”的事项时，委员会深表关注的是，由于长沙湾政府合署内原先编配予建筑署的办公地方，在短时间通知下改为编予差饷物业估价署，以政差饷物业估价署的装修图则延迟提交，承建商因而获准延长完工时间，估计工程延误引致的额外费用为327万元。