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Katie Hammes

Katie Hammes

VP of Mortgage Lending · NMLS# 1031048

Mequon, WI5.0(55 reviews)

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Katie Hammes at Guaranteed Rate Affinity (NMLS #1031048)

Today · 9 AM – 5 PM

11303 North Port Washington RoadMequon, WI 53092
Rating5.055 reviews
Satisfied97%60 reviews

Ratings include all 60 reviews. Reviews collected directly from clients are shown only with their permission.

No written review

Mitchell S.

Over the years, I have worked with numerous lenders, however, this is the first time I have worked with Katie and there is no going back. She is responsive, accurate, professional and spot on all of the time!. You couldn’t ask anything more in a Lender transaction or whatever. She is simply the best!

We started house hunting and reached out to Katie. She was so patient with us. She followed up with us continuously she would update our information she was ready before us! After some years we made that last call, she was like I got you!! Her communication with us and the way she managed her team was clean smooth and organized. She communicated with our realtor and before we knew it we had a closing date! She was there from beginning to the closing. I met her in person it was like meeting a great friend that lived far away.. i always say oh Katie and I go way back.. Thank you. I refer her all the time.

cynthia T.View on Google

Katie Hammes at Guaranteed Rate Affinity did an excellent job assisting me throughout the process. She was professional, knowledgeable, responsive, and very helpful from start to finish. She took the time to explain everything clearly, answered my questions promptly, and made the entire process much smoother and less stressful. I truly appreciate her dedication, patience, and excellent service. I highly recommend Katie Hammes to anyone looking for a reliable and professional lending expert. Tina Hakimzadeh

Robert J.View on Google

Informative, accessible, detailed, and a compassionate human in the banking world. Overall extremely helpful— would work with again and refer to friends and family.

rebecca O.View on Google

Response from Owner

Thanks a ton John for taking the time to leave me a rating! Glad to see the experience was 5 stars. Let me know if you ever need anything!

Very fast and smooth evern during holiday season

Nick

They’re are helpful

Jovani C.

Time sensitive closing during holiday and it happened smoothly 5/5 stars

Response from Owner

Thanks Nick! Glad it went smooth as well, always happy to help no matter the time of year. Cheers to 2026!

Katie has been a joy to work with. Exceptionally responsive and knowledgeable. Looking forward to working together in the future.

Response from Owner

Thank you Adam! Very much appreciate the kind words - I look forward to working together in the future as well!

Working with Katie and her team was an excellent experience. The entire process of purchasing my home was smooth, fast, and stress-free. Everyone was informative, attentive, and always available to answer questions or provide updates. They made what can be an overwhelming process feel easy and seamless. I’m so grateful for their support and would absolutely recommend Katie and her team to anyone looking for a top-tier home-buying experience.

Response from Owner

Thanks Talisa, I really appreciate you taking the time to share this! Helping make the process feel easy and seamless is always the goal, and I’m so happy to hear that was your experience. Thank you for trusting my team and me — it was a pleasure working with you!

Talisa M.View on Google

Katie is a true professional. She is extremely knowledgeable and diligent and pleasant to work with. I highly recommend giving Katie a call for any home financing needs!

Katie was amazing from the beginning to the end! She answered all my questions, was very responsive, worked very hard to get me the loan for my new home which she accomplished. I would definitely recommend her to anyone looking for a new home loan 😃

Joseph S.View on Google

I cant say enough praise for Katie and her team. First conversation was on a weekend when she definitely didnt have to be working. She got everything rolling immediately and communication was one of the best customer service experiences I've had across the board. You cannot go wrong by letting Katie win you over. Great Job!!!!

Response from Owner

Thank you for such an amazing review Brent! I’m so happy to hear that the communication and experience stood out — that’s ALWAYS my top priority. It was a pleasure working with you, and I truly appreciate the opportunity to help - never hesitate to reach out if you, your family, and your friends need anything!

I have worked with Katie three times when financing homes. Each time she has made an otherwise stressful home buying situation less so with her excellent communication and working to find the best financing options available. I would highly recommend Katie for your home financing needs.

Response from Owner

Jeremiah, I can’t thank you enough for the kind words and for choosing to work with me multiple times. Helping you find the best financing options each time has been a pleasure. I truly appreciate your trust and recommendation! I look forward to helping you again in the future any time you need me!

jeremiah W.View on Google

Easy to work with and professional

Christopher H.

Katie Hammes, the loan office I worked with, handled everything in a very complete, professional and courteous manner.

Daniel Y.

Super helpful

Jennifer H.

Katie is absolutely wonderful! She is available at any time to answer questions. Very professional. Extremely knowledgeable and helpful!

Response from Owner

Thank you so much Nikita! I’m grateful for your kind words and really enjoyed working with you. Always here if you need anything!

Nikita B.View on Google

Katie and her team are the best! Very organized, knowledgeable, helpful! There is not enough words to describe our experience! It was the best! Customer service skills, answering questions and emotional support from Katie was unbelievable! Thank you so much for helping and taking care of me and my family!

Tetyana T.

GRA and specifically Katie Hammes / Trish Adams were perfect to work with!

Patrick H.

I cannot say enough about how amazing it has been to work closely with Katie! My recent Buyer has been more than satisfied; expressing they were well-informed every step of the way, and highly impressed by how Katie has made herself beyond available to work very quickly behind the scenes to make the transaction go smoothly+staying on top of meeting every target on lending end ahead of deadlines. Every. Single. Time. Please give her a follow/like- even if you aren’t currently looking to buy/sell, she is FANTASTIC to have in your back pocket for in the future when you start thinking about doing so!

Amazing experience from start to finish. Extremely responsive, patient and committed to helping in every way needed. Grateful for thos fantastic first time home buying experience.

Katie has been awesome to work with! We looked at multiple lenders, and Katie was the most transparent about all the lender fees and estimated costs. As first-time homebuyers, it was a high priority for us to find a lender that was willing to help us learn the process and understand the decisions we were making. We were also able to close very quickly. We would highly recommend working with Katie and Guaranteed Rate Affinity!

Patrick H.View on Google

Went above and beyond to help me through the entire process.

Sesi W.

Communication was top-notch— always available to answer questions, keep us informed and provide clear explanations! This was especially important to us as first time home buyers who both have rigorous work schedules. They were so efficient to keep things moving and allowed us to close in under 2 weeks!

Alexis Z.

Katie Hammes and her team provided superb service to us. We are absolutely delighted with Guaranteed Rate Affinity!

We had a such an excellent experience working with Katie and her team! From start to finish, they were tremendous and incredibly helpful! Communication was top-notch—they were always available to answer questions, keep us informed and provide clear explanations! This was especially important to us as first time home buyers who both have rigorous work schedules. They were so efficient to keep things moving and allowed us to close in under 2 weeks! We highly recommend Katie and her team to anyone seeking a reliable, responsive, and especially efficient loan provider! Their dedication to exceptional customer service, competitive rates, and going the extra mile to thoroughly communicate really makes a difference!

Alexis Z.View on Google

Katie Hammes was fantastic!

Bryce B.

They were very easy to work with and helped me greatly along the way to make the loan mortgage process as straightforward, and efficient at possible!

Spencer P.

Very easy to work with through the entirety of the process

Camille D.

They were very communicative and prompt.

Jasmyn F.

Guaranteed Rate made obtaining a mortgage for my first home incredibly easy and convenient. They were extremely knowledgeable and helpful to close on my first home.

Andrew H.

Everything went well, we really liked Katie and her team! Unfortunately there were a few last minute complications with paperwork because of my paternity leave that made the last day challenging. Other than that, everything went great.

Kyle S.

Everything was smooth and easy

Peter M.

I was recommended by a friend and I was happy with the service provided

Can E.

Katie Hammes is the best! GRA is great to work with. They answered all my questions, and made the process very easy.

Chad R.

Katie Hammes provided exceptional service and worked so well with our agent Amy Evans.

William G.

Katie was great to work with. I had few issues and she was patient.

Brian J.

Great customer service, was able to help walk me through every step of the way, the team was always prepared, and super helpful

Dominic P.

Katie is the best!

Andrew D.

Because I wouldnt owna house right now without them, the unique approach to finiding the right product(s) was the perfect fit

Benjamin R.

The mode of communication was easy. Always available to answer my calls. Made the whole process very easy and smooth for me.

Jyoti C.

We've worked with GRA on several loans and Katie Hammes has always made everything run smoothly and makes the process easy to understand. She seems to be available 24/7/365!

Jennifer T.

Everything I had to do I could do from the comfort of home.

Michael W.

They were expertise and helpful

Joanna H.

Exceptional service with a short turn around time.

Paula W.

Katie Hammes was amazing to work with. We had some unexpected surprises that arose from my impending divorce and she was a really pro helping to work through them.

Michael K.

I liked working with Katie Hammes

John K.

They did a bang up job

Armando G.
Equal Housing LenderEQUAL HOUSINGLENDER
Copyright © 2017-2026 Guaranteed Rate Affinity, LLC. All rights reserved Guaranteed Rate Affinity NMLS: 1598647 - For licensing information, go to: www.nmlsconsumeraccess.org. Arizona Mortgage Banker License #0941440 1800 W. Larchmont Ave. Suite 400, Chicago, IL 60613 P. 888-844-9888 Operating in the state of New York as GR Affinity, LLC in lieu of the legal name Guaranteed Rate Affinity, LLC. 348 West 14th Street 2nd Floor New York, New York 10014. Applicants are subject to credit and underwriting approval. Restrictions apply. All information is provided for informational use only and should not be considered financial advice.

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