1) you and your daughter can execute affidavit that you are relinquishing your rights in flat and have no objection if flat is regd in name of daughter only
2) i presume no loan is taken for flat purchase . If any loan is taken you would need bank consent too
3) without builder consent sake deed cannot be regd in nane of yiur daughter only
4) let sale deed for flat be regd in all 3 names . Later yiu can execute gift deed or relinquishment deed in favour of daughter