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Sierra Pacific Mortgage Company Inc. NMLS #1788 Toll Free 800-447-3386
Alfonso Casillas

Alfonso Casillas

Loan Officer
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About Alfonso

Integrity is the cornerstone of my business. I believe a mortgage should be about building relationships, and helping my customers achieve their home financing goals, its not just a transaction.

As your confident mortgage professional, I take a consultative approach to the home loan process by customizing each home financing solution to my customer. Its important to me to tailor the mortgage to their unique financial needs.

Whether you are purchasing your dream home, refinancing your current residence or investing in additional property, I can help you find the right loan program for you. Contact me today.

Additional Languages Spoken
Se Habla Espaol

9831 Irvine Center Drive, Suite 100
9831 Irvine Center Drive,
Suite 100,
Irvine, CA 92618


I want to thank you very much for helping me with my mortgage. It was a pleasure to work with you and your team. The process was seamless. I appreciate the time you took to answer all of my questions and to explore all of my options. Most importantly, I appreciate you giving me all of the information in language that I understood. Rest assured that I will be approaching you again as my financial needs change.
All the best,

JoAnn H.

Alfonso Casillas helped me out, told me the truth, and was good on his word, and he did what he told me he was going to do. I was about to get a bad experience with another lender I talked to him and got way better deal then the other loan lender, made this 1st time home buying experience happy and easy.

Cruz R.

Alfonso was very proactive and forth coming with information. He answered questions before we even had them. Along with a detailed email/phone calls about where we were in the process. Alfonso is very knowledgeable and we will use him again in the future if we have any additional needs. 

Jose F.

Alfonso was a pleasure to have as my loan officer for the second time. He offered excellent advice, answered every question and helped me make informed decisions. First, he helped me to refinance my 30 year loan to a 15 year loan at the lowest interest rate > 3% two years ago and now he assisted me with a new loan to purchase my new home. We thank you for the time and effort you spent with us making the closing process experience very easy. He deserved the highest praise as he is great and responsive. I will definitely continue to referring to my family and friends to Alfonso.

Juan G.

Al has helped me with three refinance loans, a conventional one and two VA loans. Al has earned my business by ALWAYS going above & beyond with his customer service. He is passionate, extremely knowledgeable, honest and very reliable. Al treats you like family not just a customer. He always looks for which product works best for you and is great at explaining everything in a manner that anyone will understand. In 25 years of home ownership, there has never been another loan officer that has gained my total confidence and as such he is my go-to guy.

Louie S.
Licensing Information :
Sierra Pacific Mortgage Services, Inc., Licensed in Arizona under License No. 0905006. Licensed in California by the Department of Business Oversight under the Residential Mortgage Lending Act 417-0015. Regulated in Colorado by the Division of Real Estate 1788 and Supervised Lender License 988320. Licensed in New Mexico 01592. Licensed in Oregon under License # ML-460. Not Licensed in the State of New York.