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Executive Loan Officer
JIGriffin Funding
Portrait of Jack Iwamoto
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Jack Iwamoto

NMLS ID 2634018
Executive Loan Officer with included client feedback emphasizing knowledgeable guidance + responsive communication and experience reflected across DSCR + Bank Statement scenarios.
Start Application Secure online application Apply now →
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Call Jack Direct line (619) 625-5281
Irvine, CA
ConvDSCRBank Stmt18 five-star reviews26 states200+ loans closed at Griffin Funding
Client reviews18 five-star reviews

Five-star Google reviews selected for this profile.

Clients mentionKnowledgeable guidance & responsive communication

What clients mention most often in their reviews.

Loan typesDSCR & Bank Statement

Loan types mentioned most often in client reviews.

LicensingLicensed in 26 states

NMLS ID 2634018 · recorded licensing.

Client feedback

Client reviews

Showing 18 five-star Google reviews selected for this profile. Reviewer initials are shown for privacy.
DSCRInvestment PropertyBank StatementRefinance
★★★★★Google review
“We just closed on an investment property using Griffin Funding's DSCR loan program and couldn't be happier with the experience. Jack Iwamoto and Adriana Perez were fantastic from start to finish.Jack was responsive, knowledgeable, and kept everything moving. From the moment we executed the purchase contract, he had the loan submitted for processing quickly and got us to conditional approval ahead of schedule. He was always reachable when we needed him and clearly knew the DSCR product inside and out — which matters when you're trying to close a complex investment property transaction on a tight timeline.Adriana handled the processing side with the same professionalism. She was on top of every outstanding condition, communicated clearly, and made what can be a stressful process feel genuinely manageable.We closed on time, at the terms we were quoted, on a property we're very excited about. If you're looking for a DSCR lender who actually knows what they're doing and treats you like a valued client, I'd strongly recommend giving Jack a call.We look forward to doing many more transactions with Griffin in the years ahead!”
S.H.Griffin client · Jul 15, 2026
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★★★★★Google review
“Jack was great to work with, instructions to my client were clear, closed on time.”
T.C.Griffin client · Jul 15, 2026
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★★★★★Google review
“As a business owner it can be a struggle getting a traditional home loan. I was searching on Grok and Griffin Funding came up. I was skeptical at first, but gave them a call and the whole process was super easy and now I'm in my new home! Jack Iwamoto called me immediately and helped walk me through the process. I never write reviews, but this time it's worth it! I did a bank statement loan, and it was the easiest loan process I've ever had. Also a thanks to Adriana!”
L.F.Griffin client · Mar 15, 2026
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★★★★★Google review
“As a self-employed business owner, traditional mortgages were a difficult task with my goal of a home refinance. Being located in the Northern Midwest region of the US, in a smaller town, I felt I had limited options. I found Griffin Funding in my Google searches, and saw they offered bank statement loans for self employed individuals and learned that they use your bank statements of your actual income, instead of your after deduction net income like every other bank. I worked with Jack who was absolutely phenomenal! He was thorough, extremely knowledgeable, responsive and had great communication throughout the entire process. I would highly recommend Griffin for a mortgage, home refinance, especially if you’re a business owner or self-employed individual. I will use them again should I ever need in the future! Thank you!”
B.S.Griffin client · Mar 15, 2026
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★★★★★Google review
“This was my second home loan from Griffin Funding. Jack and Adriana were complete rock stars all the way through the process and made sure all the numbers added up and we closed early. If you are doing a bank statement loan this is the company to work with! The process was easier the 2nd time around as well! Great Job!”
J.C.Griffin client · Mar 15, 2026
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★★★★★Google review
“Totally awesome experience with my DSCR loan with the help of Jack, Nick and Adriana. My loan closed in less than 30 days!!! No wonder they are the leading company most real estate investors go to. Thank you for such a smooth transaction throughout the loan process!!!!”
M.L.Griffin client · Feb 15, 2026
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★★★★★Google review
“I needed to expedite a deal and I worked with Jack, Adriana and Molly. They were communicative, responsive and got my deal done in less than a month. This is my second deal with Griffin Funding and I will continue to use them for all my investing transactions.”
R.L.Griffin client · Jan 15, 2026
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★★★★★Google review
“Jack and Adriana were super. Clear communication and straightforward information during the whole process. I recommend them to anyone looking for a loan or ways to achieve their financial goals.”
W.T.Griffin client · Jan 15, 2026
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★★★★★Google review
“Nick, Jack, and Adriana are incredibly knowledgeable and truly made the entire transaction easy and smooth. Look no further!”
T.C.Griffin client · Jan 15, 2026
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★★★★★Google review
“Great experience working with Jack and Adrianna. they were both very responsive and helpful. I wouldn’t hesitate to recommend griffin funding to all my Acquaintances.”
S.P.Griffin client · Nov 15, 2025
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★★★★★Google review
“Never have I had an easier, more seamless mortgage experience—and I’ve had quite a few. Griffin was by far the easiest, fastest, and most transparent. Jack Iwamoto and Adriana Perez were fantastic—instant replies, clear communication, and genuine professionalism that made me comfortable throughout the process.It was actually a complicated situation, yet they made it feel effortless. The attitude clearly comes from the top—CEO Bill Lyons runs a 100% customer-centric company with top-tier people.One pleasant surprise: the final fees were less than originally projected—a perfect finishing touch to an already stellar experience. I only write reviews when service is truly exceptional, and this one was.”
G.A.Griffin client · Nov 15, 2025
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★★★★★Google review
“We just recently closed on a DSCR loan with Griffin Funding. Thankful that we got to work Jack, Adriana and Ashley. They communicated well and promptly and got us to the end. If you've ever done a loan you know it's usually complicated and stressful -- these guys made it so much easier. Thank you!!!”
B.A.Griffin client · Oct 15, 2025
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★★★★★Google review
“The team made this experience as seamless as I could have hoped for! They are so professional, responsive and on top of things! So grateful for Jack, Adriana and Ashley! They are the dream team!”
J.Griffin client · Sep 15, 2025
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★★★★★Google review
“Working with Griffin Funding was a wonderful experience. Jack, Adriana and Molly were great, very informative and easy to work with. We would definitely use Griffin Funding again!”
K.N.Griffin client · Sep 15, 2025
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★★★★★Google review
“I recently closed a loan with Griffin Funding, and I couldn’t be happier with the experience. Adriana and Jack made the entire process smooth, professional, and stress-free from start to finish.What really impressed me was their clear communication — every question I had was answered quickly, and they made sure I always understood the next step. I was especially relieved that my creditors were paid directly through closing, which gave me peace of mind that everything was handled correctly.The notary came right to my home, and the whole process was convenient and seamless. Griffin Funding truly delivered on customer service, and I felt supported the whole way through.I highly recommend Griffin Funding to anyone looking for financing — they go above and beyond to make sure their clients are taken care of.— Mark R.”
M.R.Griffin client · Sep 15, 2025
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★★★★★Google review
“Jack, Adriana and Nick worked so well with me as a team to get my loan closed. They explained all details and followed up to make sure nothing was missed. I will be doing additional loans with them in the future and strongly recommend Griffin Funding for your mortgage needs.”
K.T.Griffin client · Jul 15, 2025
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★★★★★Google review
“We have had an outstanding experience working with Jack Iwamoto (Griffin Funding) From start to finish, he was professional, patient, and incredibly knowledgeable. Jack not only guiding us through every step of the mortgage process but also securing us a lower interest rate than we had ever expected. We highly recommend Jack to anyone looking for a smooth, stress-free mortgage experience with someone who truly delivers results!”
N.C.Griffin client · Apr 15, 2025
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★★★★★Google review
“Its was great working with Jack he was very knowledgeable and and was able answer any concerns that I have. Hope to work with him again on future projects”
M.N.Griffin client · Mar 15, 2025
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Licensing

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Review summary

Client feedback at a glance

A summary of the client reviews shown on this profile.

5★rating of reviews shown
18reviews shown here
Jul 15, 2026most recent review shown
Googlereview source

About Jack Iwamoto

Jack Iwamoto | Sr. Loan Officer at Griffin Funding

NMLS #2634018 | Direct: 619-625-5281
Serving clients nationwide | Licensed in 22 states

Jack Iwamoto is a Senior Loan Officer at Griffin Funding, where he specializes in Non-QM mortgages, including DSCR ( Debt Service Coverage Ratio ) Loans for real estate investors and Bank Statement Loans for self-employed borrowers and business owners. As of December 2025, Jack has personally funded 93 loans totaling $29.7 million in volume, helping clients nationwide secure innovative mortgage solutions that traditional banks often can’t offer.

With a Bachelor of Science in Finance from the University of Utah, Jack brings a strong analytical and consultative approach to each borrower relationship. He focuses on understanding every client’s financial goals and tailoring mortgage strategies that maximize cash flow, preserve liquidity, and accelerate long-term wealth growth through real estate.

Jack is known for his clear communication, attention to detail, and deep expertise in non-QM lending - from structuring complex bank statement qualifications to optimizing DSCR ratios for investment property portfolios. He takes pride in guiding clients step by step, making even the most complex loan programs simple, transparent, and stress-free.

Outside of lending, Jack is passionate about community and environmental stewardship. He previously volunteered with the Surfrider Foundation - Newport Beach Chapter, supporting coastal cleanup and ocean preservation efforts.

Ready to work with Jack?

Start your application, schedule a consultation, or contact Jack directly.

Start ApplicationBook ConsultationCall Jack

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Griffin Funding, Inc. NMLS Unique Identifier: 1120111
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Purchase
A purchase loan can be used to buy a home.
Refinance
A 'rate and term' refinance allows you to improve the terms of your existing mortgage by lowering the monthly payment. A 'cashout refinance' allows you to convert equity into cash.
Home Equity
A home equity loan or line of credit is a 2nd mortgage that allows you to convert equity to cash without having to touch your existing 1st mortgage.
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