1) Full facts with further details and documents required.

2) Consult a local experienced relevant law expert, an intelligent, able Advocate of repute, in person, with full facts and documents to explain in detail.

The child or the legal heir can claim rights in the property only if either of huis parents are having title to the property in  the form of registered sale deed.

The registered GPA in  favor of the power agent stands automatically cancelled upon the death of the power agent.

The  sale agreement is not a title document.

The Will in favor of GPA has to be probated only if the testator is reported to have died for enforcing the Will.

If the property is in your possession and the electricity connection and other tax receipts are in your name (your  parents' name), then you can file a suit for declaration of title on the basis of the documentary evidences in your possession.

However there are  very less chance to in this case.

Approach seller to execute registered sale deed in his favour as parents are dead 

GPA ceases on death of father 

You can file suit against the lessee to get the property transfer on legal heirs name on the basis of the Registered "Agreement to Sell" and provide the Payment made to lessee against this transactions.

An agreement to sell was done. You being the heir can take him to court to enforce the agreement. 

The GPA would be revoked once the holder of the GPA DIES.

There is no such validity. It can be only put in the agreement itself till which any sale deed will be executed after the said execution of agreement to sale. There is no legal validity unless it's specifically put in the said agreement

- If the said property already was transferred in the name of that lady , then after that she executed a registered GPA in favour of her husband , then after the death of both of them , the legal heirs can claim the said property . 

- However, one cannot claim ownership on the ground of only registered Sell Agreement in the absence of Sale deed. which is required legally . 

- However , the child can approach the court on the ground of that sell agreement against the land authority to clam the ownership of that property. 

Lessee has no legal rights to sell the property as per provisions of law. The lessee has no right,title and ownership in the property therefore transactions are illegal. 

A specific performance suit is needed to be filed for getting the required transfers done 

Do they have proof payment ? 

Is this GPA is irrevocable and with consideration? If yes than GPa is still effective.

Court order will require to declare ownerhsip of legal heirs which is last resort.

Dear Client

This is to inform you that,

• Agreements concluded prior to the death of either party to a sale agreement in circumstances where transfer has not as yet taken place, remain valid and enforceable.
• An attorney holder's rights automatically get extinguished upon the death of the executor.
• Since the lady and her husband has died without getting the property transferred or mutated in their own name then it shall now be considered as person dying intestate and the will is also not valid.
• The legal heirs can now file a case in the court for transferring the said property in their name based on the document of Registered Agreement to sell as the person has died intestate and you are the only one that can complete the rest of the formalities of the Sale.

Children of deceased POA and her husband can file suit as their legal representatives against owner of land to get the land ownership transferred on their name under specific relief act.

Dear Sir/Madam,

You are suggested that the seller can register the said property in the name of the child or legal heir at this stage also to regularise the things. 

The legal heir of the lady will have to approach the lessee to register a deed of assignment in that heir's name, subject to that administrator obtaining a letter of administration for the lady's estate

For the above it needs to be ascertained from the lease deed whether the lessee has a power to assign his leasehold rights without consent of the lessor/owner