My answers are as follows:
1. How to file partition suit in the absence of property documents paper. How about the option of filing interim application in petition suit restraining the mother from executing any will or other documents in respect of property.
Ans: You have to take certified copies from the concerned offices like Sub-Registrar Office and BBMP etc. Encumbrance Certificate, certificate copy of Sale Deed, Katha extract etc available to any person as there are public documents. Then file partition suit for equal partition. In that suit on the first day of institution of partition suit file interim application seeking a direction to mother not to execute any document in respect of above property and Court will issue ex-parte order accordingly.
2. Being Co-owner, Can we claim property documents copies from mother as a matter of right.
Ans: You can claim documents from the concerned officer then after filing suit you can move an application for producing originals before the Court by the mother.
3. Can search be made in father's name at Sub registrar office or at B B M P(where online house tax paid regularly), to get basic property details. How about RTI option in respect of Khatha papers filed at B B M P during 2015 so that we will get all property documents copies.
Ans: RTI option will be delayed so you may contact some brokers and you will get help from them on payment basis.