Dear Sir,
You may file a suit for declaration and if you are not in possession then in the suit you must also claim possession of the property. You must seek relief of declaration to the title of the property and also to declare that the said sale deed is not binding upon you as it was without consideration under bogus Power of Attorney. You must fight very hard and prove that your father not executed such Power of Attorney and not received any consideration amount and not given any power to sale the property. From 2011 the Supreme Court says GPA sales are invalid, this principle may also apply to your case as your father not received any consideration and there was no clause to sell the property.
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No property sale on power of attorney: Supreme Court
Property sales through the common practice of general power of attorney (GPA) will not give ownership title to the buyer.
In a landmark judgment that is expected to send a large number of property owners into a tizzy, the Supreme Court held that the GPA method of immovableproperty sales is not a valid form of transfer of property.
A three-judge bench presided over by Justice R. V. Raveendran said that property can be lawfully transferred only through registered sale deeds.
"A power of attorney is not an instrument of transfer in regard to any right, title or interest in an immovable property," the bench said, after interpreting various provisions of the law concerning property sales. However, the bench said the judgment will not affect "genuine transactions" under the GPA.
The judgment delivered on Wednesday would have an impact on both freehold and leasehold properties and affect the mode of transfer of property in Delhi and the National Capital Region (NCR) where GPA sales are very common. Even though it can cause some hardship to those who have already purchased property through the GPA, the order will help curb evasion of duties, flow of black money into real estate and also save people from being cheated by unscrupulous owners selling the same property to several people.