Cc limits are granted by bank on hypothecation of goods inventory. The inventory lying in store / factory is kept as a security with the bank and the customer may enjoy a running loan against the security. Bank periodically demands stock statement and its valuation is being done to assess the value of current stock.

. from facts stated by you it appears that in 2003 you had bought a residential property and you are using it for commercial purposes .

it appears that you desire to give your property papers as security .under the circumstances go in for land user change to avoid any legal complications in sanctioning of cc limits