They should use eDemand to submit a lien payoff request 3. Once we process the request and receive payment, we will release the lien.Send your payment to: San Diego County Credit Union Attn: Deposits, Payments or Payoffs P.O. Box 269040. Edit, sign, and share lien payoff letter template online. No need to install software, just go to DocHub, and sign up instantly and for free. Q: What are the procedures to pay off my loan? A: The San Diego Housing Commission (SDHC) requires a written request for any loan payoff information. Request an Account and Routing Number correspondence on SSFCU letterhead. Fill out online and submit. Become a member and become a part of our community.