Based on the facts stated, your concerns are well-founded. In an assignment transaction involving an under-construction or recently completed apartment, particularly where the seller is an NRI, the payment mechanism, execution of the assignment agreement, and registration process must be carefully structured to ensure that title is not transferred before the seller receives the agreed consideration.
With respect to your first query, you should not execute an unconditional Assignment Agreement unless the agreement itself adequately safeguards your interests. The Assignment Agreement should clearly stipulate that it becomes operative only upon fulfillment of specified conditions, including payment of the buyer's agreed contribution and confirmation of the bank's loan disbursement. Alternatively, the parties may execute the agreement simultaneously with the payment process through an escrow arrangement or under a legally binding undertaking. Merely signing the Assignment Agreement and waiting indefinitely for payment exposes you to unnecessary risk unless the agreement expressly provides that no rights, title, or interest pass to the buyer until the entire sale consideration has been received.
Regarding your second query, in most housing loan transactions, the buyer's bank disburses the loan amount only after all conditions imposed by the lender are satisfied, which may include execution of the necessary transfer documents, obtaining the builder's no-objection certificate, and confirmation that the property is ready for registration. It is common for the bank to release the loan amount directly to the seller at or immediately before registration. Since the builder has informed you that your physical presence is not required at the time of final registration, you should ascertain the exact mechanism proposed by the builder. If registration is to be completed by the buyer on the strength of documents already executed by you or under a power of attorney, you must ensure that the bank's disbursement is irrevocably secured before those documents are released or acted upon.
As regards your third query, your rights can be protected by ensuring that the transaction documents contain appropriate safeguards. The Memorandum of Understanding and the Assignment Agreement should clearly provide that the assignment shall not become effective until the full consideration has been received by you. The agreements should specify definite timelines for payment, provide that any delay or default entitles you to terminate the transaction, and preserve your right to recover damages or forfeit the buyer's advance, if so agreed. If the buyer is obtaining finance, the buyer should also furnish a sanction letter from the bank confirming the loan amount and the conditions for disbursement. Where feasible, an escrow mechanism may be adopted so that the executed documents are released only upon confirmation that the entire consideration has been credited to your account. If a power of attorney is being used because you are an NRI and will not be present in India, it should be carefully drafted and, wherever possible, be a limited or conditional power that cannot be misused before payment is received.
In your case, the most critical document is the MOU itself. The clause stating that the buyer's contribution will be paid upon execution of the Assignment Agreement and that the bank will disburse the balance at the time of final registration needs to be examined carefully to determine whether it adequately protects your interests or leaves a gap between execution of the documents and receipt of the sale consideration.
Accordingly, before signing the Assignment Agreement or any power of attorney, you should have the entire transaction structure—including the MOU, proposed Assignment Agreement, builder's transfer policy, and the buyer's loan sanction terms—reviewed by a property lawyer. This will ensure that you do not part with your legal rights or enable registration without first securing payment of the entire agreed sale consideration.