Passionate About Homeownership
Obsessed with Transparency
Committed to a Seamless Process
and 5-Star Service

John is one of a kind, relentless in his work ethic and dedicated to serving clients and the community. A leader in Quad Cities real estate lending since graduating from St. Ambrose University in 2003, John brings more than 24 years of industry experience. In the past decade alone, he has helped over 4,500 families secure mortgage financing, whether buying their home or refinancing to gain financial freedom, and has earned more than 795 five-star reviews that continue to grow with every closing. John delivers an unparalleled level of service and expertise to his clients, realtor partners, and the community.

John takes the time to consult with each client, walking them through programs and options so they can make informed decisions that fit their individual needs. He works with borrowers at every stage and treats every person with respect, care, and clear guidance.

John has intentionally built Team Cornish around people he trusts, a team defined by talent, passion, and commitment. They prioritize clear, consistent communication and a seamless process from application to closing and beyond, executing with the same dedication they bring to every client and referral partner.

John lives in Davenport, Iowa with his wife, Meghan, and their three children. Together, they are deeply involved in local philanthropy. They founded the Key Cares Foundation, which has raised more than $160,000 for area nonprofits in the past four years, and John’s family has hosted the Danny Joe Memorial Golf Tournament, which has raised over $400,000 for the Children’s Cancer Connection. John has long been connected to that organization and most recently served on its Board of Directors.

John doesn’t rest after reaching a goal; he sets the next one. He is always refining his team’s processes and raising the bar for customer experience and transparency.

Google 5 Star Reviews
125

“John and Team Cornish at Key Mortgage Group are redefining lending through leadership, exceptional service, and a deep commitment to our local community. Behind every 5-star review is a team that refuses to settle for “good enough.”

Facebook Recommendations
23
Nicole M.
Nicole M.
Working with John and his team was truly an amazing and stress free experience! Being a first time home buyer at age 25 everything can be so unknown and you will have so many questions. John and his team were available any day all hours for any questions small or big! They took their time explaining all the mortgage terms as well as payments and detailed step by step process from start to finish! They made what seemed impossible for someone my age feasible and within reach! Couldn’t recommend enough!
Dani B.
Dani B.
John and his team had a short window to get us to the closing table on time and they executed it! There were curveballs added to the short turnaround time and they were able to navigate those efficiently and successfully. I can’t say enough great things about John and his team. John has answered every question to the finest detail and educated my husband and I along the way! They helped me buy my first home and now my second home! Recommend them to everyone
Ryan M.
Ryan M.
John, Tayler, Lindsey, and Ryan could not have done a better job if they tried! They were friendly, knowledgeable, and honest. Any speed bump in the process, they were up for the challenge! They went above and beyond to ensure the best financing possible. I will be recommending John and team to all my family and friends! Thank you Team Cornish!!! 5 star service!
Adrian D.
Adrian D.
John Cornish and his team did absolutely amazing! They made my purchase so smooth and with zero worry along the way! I will continue to work with this company. I will recommend them to anyone who is looking to purchase a home. Thank you for all you guys did for my family, it’s truly a blessing!
Jason K.
John is amazing to work with and has such a wealth of knowledge on the entire mortgage process. He has an awesome team that takes great care of every detail along the way! We will not hesitate to use him for all of our future needs! We also recommend his work to all of our friends and family!
Meryem S.
I had a fantastic experience working with John! The entire process was seamless and convenient — everything was handled through email and informative videos, which I personally loved. It saved so much time and made things easy to understand. John and his team were responsive, clear, and incredibly helpful every step of the way. I would absolutely recommend working with him!

What Is The Difference Between Being Pre-Qualified and Pre-Approved?

Pre-Qualified

  • Based on basic info you provide (income, debts, credit estimate).
  • Quick, but not verified by documents.
  • Gives a general idea of what you might qualify for.
  • Not as strong when making an offer, it’s just an estimate

Pre-Approved

  • Full application + documentation reviewed (income, assets, credit pulled).
  • Shows sellers you’re serious and ready to buy.
  • You know your budget with more accuracy.
  • Carries more weight in competitive markets—often the difference in getting your offer accepted.

Bottom Line:
Pre-Qualification = Estimate.
Pre-Approval = Verified Buying Power

Educational Videos