Housing loan

Hi, Me and my wife have taken a joint loan for a property that is being built. I have read that only after the property is completed and having got possession of the same can I claim exemption under 80C and sec 24B. I have already started paying the EMI's towards the loan of 30 Lakh. Is there any provision for me to claim exemptions this year since I am already paying EMI's? Anyone please help me.