You can easily check your loan application's status through one of the below given ways:
Login to the customer portal on our website https://portal.hdfc.com/login.
call our toll-free helpline at 1800 210 0018 Or (STD code) 64807999,
email us at customer.service@hdfc.com,
visit the nearest HDFC Bank branches for Home Loans (erstwhile HDFC Ltd. branches)