If your relative used a power of attorney to sell your property in Kolkata without your genuine consent, this is a serious breach of trust involving potential fraud, but Indian law gives you a real path to challenge the transaction and recover what rightfully belongs to you. Your first step is to obtain certified copies of the power of attorney document and the resulting sale deed, since your lawyer needs to carefully examine whether the power of attorney was validly created, whether it was still in force at the relevant time, and whether it actually authorised the specific sale that took place.

If the power of attorney was forged, had already been revoked before the sale, or did not actually grant authority for this specific transaction, you have strong grounds to file a civil suit seeking a declaration that both the power of attorney and the resulting sale deed are void, along with a suit for recovery of possession if the property has already passed to a third party. Your lawyer should also trace whether the sale consideration was ever genuinely received by you or diverted elsewhere, since this financial trail often proves central to establishing the fraud.

Given the seriousness of using a power of attorney to defraud a family member, this conduct will typically also amount to criminal offences including forgery, cheating, and criminal breach of trust under the Bharatiya Nyaya Sanhita, and pursuing a criminal complaint alongside your civil suit adds meaningful accountability and pressure, often expediting cooperation and resolution in the civil proceedings as well.

Time is critical, particularly if the property has already been resold to a third party claiming to be a bona fide purchaser unaware of the underlying fraud — your lawyer will need to move quickly to establish either that the purchaser had notice of the irregularity, or that the power of attorney was so fundamentally defective that no valid title could ever have passed regardless of the purchaser's good faith.

Given how much depends on documentation and prompt action in these cases, specialised legal guidance from the outset is essential. You can consult Aapka Legal Advice, where a panel of retired judges can offer an experienced view on the strength of your claim and the fastest route to recovery. Engaging the Property Lawyers in Kolkata | Aapka Legal Advice ensures both your civil and criminal remedies are pursued in a coordinated, urgent manner. In conclusion, an unauthorised power of attorney sale in Kolkata is a serious wrong, but swift, well-documented legal action gives you a genuine path to reclaiming your property.