facts available meaning in English

可得事实

For cases where the stated consideration of an agreement for sale of a residential property was revised by a supplemental agreement before assignment , the stamp office will take into account all the facts available at the time of stamping when computing the amount of stamp duty payable
住宅物业买卖协议所载的楼价，如果在完成交易前，以补充协议调整，印花税署在计算印花税时，会考虑所有在加盖印花时存在的事实。
For cases where the stated consideration of an agreement for sale of a residential property was revised by a supplemental agreement before assignment , the stamp office will take into account all the facts available at the time of stamping when computing the amount of stamp duty payable
买卖协议完成交易前调整楼价住宅物业买卖协议所载的楼价，如果在完成交易前，以补充协议调整，印花税署在计算印花税时，会考虑所有在加盖印花时存在的事实。