Our Mission Is To Transform Lives Through Homeownership™

Explore the possibilities: (818) 874-9900

We empower individuals and families at every stage of life to achieve financial stability and freedom through trusted lending solutions, including first-time homebuyer loans, reverse mortgages, and personalized solutions. 

With unwavering integrity, expert education, and concierge-level service, we make the dream of homeownership and generational wealth attainable for our clients. 

Our Services

  • Residential Financing

    First-Time Homebuyer & Purchase or Refinance

  • Loan Options for Seniors

    Loan Strategies for Retirement

  • Investment/Commercial Loans

    Business Purpose Loans

What We Believe

For us, every loan is not just a financial resource but an opportunity to offer emotional stability as well. Whether we're helping a young family buy their first home, guiding seniors through reverse mortgage options, or assisting clients in overcoming financial setbacks, we see every client as an individual—with unique dreams and challenges—that we are committed to understanding and supporting.

Homeownership is a Sacred Trust™

The house you are buying is not just a house—it is your home and your family’s home, the setting for many of your most rewarding personal and family experiences.

We go beyond lending—we deliver innovative solutions, transparent guidance, and an unwavering commitment to your financial success across generations.

  • Marlyn B.

    The whole team at Mainstreet Mortgage works hard to get the best deal. They kept us up-to-date every step of the way. We had a 21-day mortgage, and we all worked quickly and diligently to close on time. Nathan worked all sorts of crazy late hours to get us funded. Diana was always available to explain any questions to make the whole experience smooth. John was the calm in my emotional storm. Thank you for the great experience. I definitely recommend MainStreet Mortgage if you are purchasing a home.

  • G. H.

    I can’t say enough good things about MainStreet Mortgage! John Mallett went above and beyond to help me secure a loan for my home. From start to finish, he was fully invested in the process. Despite any obstacles that arose, John worked diligently and tirelessly to get my loan approved. I’m forever grateful to John Mallett and MainStreet Mortgage. The professionalism, friendliness, and unwavering attention to my needs made the entire experience stress-free. Interacting with John, Nathan T. Ouellette, and Gina Costigan truly put me at ease—I knew I was in good hands. I highly recommend MainStreet Mortgage to anyone looking for exceptional service and personalized attention.

  • Steve B.

    I am not very good at high finance, and my understanding of most of the terms used in mortgage dealings is rudimentary. I found that I needed to explore a refinance for my home and reached out to several mortgage companies to get some assistance. I finally found a company that seemed to really want to help me with my many questions, with no pressure to commit. It turned out that they were, in fact, that kind of business. My go-to person and now friend was Nathan Ouellette. He spent hours late into the night to answer my many questions, keeping me informed constantly throughout the process, and guided me to a wonderful result in my refinance experience. Thank you, Nathan!

  • Brian M.

    Working with MainStreet Mortgage was an absolute breeze. There are many challenges when trying to buy a home, and John, Nathan, and the MainStreet team were there to assist the entire way. They even performed extra services that many other firms charge for. The MM team was dedicated to making our transaction as simple as can be, and they were willing to sacrifice whatever it took to make us happy and close the deal. I highly recommend working with John and the MainStreet Mortgage team! You will not be disappointed.

  • Ryanne M.

    We were hesitant about the prospect of buying our first home at first. John helped us feel confident that we were in a great position to buy. We can’t believe we were able to find our dream home. With the help of Christina and John’s guidance, and their amazing work, they were able to walk us through the process with ease, and it quickly became less daunting for us. We had an amazing first-time home buying experience with MainStreet Mortgage and would highly recommend their service to anyone in the market to purchase a home.

  • Hanley Team Home

    THIS TEAM WORKS MIRACLES — 21-DAY ESCROW CLOSED ON TIME. From the moment our clients met John Mallett and his team at MainStreet Mortgage, they knew they had found the right mortgage broker. John and Nathan worked tirelessly to get our clients a loan that met their needs. We also truly appreciated how well John and Nathan communicated with all interested parties and how they went the extra mile for their clients. For example, John contacted the listing agent as soon as we submitted the offer to assure the listing agent that our clients were well-qualified buyers and had been thoroughly vetted by his team. They constantly updated our clients, the listing agent, and my team so we knew where our clients were in the transaction. When the inevitable hiccup came concerning insurance, John and his team took charge and got our clients through the process. John closed a 21-day escrow on time, and now has two more lifelong clients.

  • Ian B.

    MainStreet did an amazing job helping my client secure what would normally be a difficult mortgage to procure. They were extremely communicative with me, which as the buyers agent, was extremely helpful and appreciated! Hats off to everyone there!

  • Sydney C.

    Working with Ed, Nathan, and the entire team at MainStreet Mortgage was an absolute pleasure! As a first-time homebuyer, I was nervous about the process, but their expertise, patience, and dedication made everything run seamlessly.

    Ed and Nathan went above and beyond to make sure I understood each step, and their responsiveness and attention to detail were incredible.

    I’m so grateful for their help and highly recommend MainStreet Mortgage to anyone looking for a knowledgeable and top-notch team. They truly made my home buying journey a success—thank you all so much!

Contact Us

Ready to get started? Complete the form below, and one of our mortgage specialists will reach out to you promptly.

We look forward to helping you achieve your dream.