Mark Zihmer

Nov 2, 2026

Great customer service and always knowledgeable when I had questions.

Everything was streamlined and easy! Anytime I had a question they were there with a answer! Fantastic experience!

Mark was and has been great to work with!

Mar 6, 2026

Mark Zihmer was very helpful along the entire process of obtaining a loan. I highly recommend him and his associates. John

Nov 26, 2025

Mark and Guaranteed Rate Affinity were very easy to work with! He was extremely knowledgeable and helpful, and helped us make the home buying process very easy! I would definitely recommend them to anyone looking!

The process was easy and stress free! Mark was very helpful.

Great job

Oct 16, 2025

No written review

Aug 29, 2025

Most awesome team great service performed above expectation.

Aug 24, 2025

We had an amazing experience. Mark made the entire process smooth, easy & completely stress-free. His knowledge and quick responses to all our questions gave us so much confidence throughout. Highly recommend!

Aug 23, 2025

We have had a wonderful experience with Guaranteed Rate Affinity! Mark is extremely knowledgeable, communicated with us through the entire process and made the overall process smooth & stress free! Thank you Mark for all of your hard work helping us to purchase our first home!

Aug 20, 2025

Marc and his team were absolutely fantastic. Facilitated a very expedient close within weeks. He needs to be your guy.

Mark was fantastic through the entire process and has continued to be a great point of reference going forward.

This is my second time with guarantee rate and I have been successful both times thank you very much!

Mark was a fantastic resource while going through the process.

Great service

Aug 11, 2025

This is my second mortgage with guaranteed rate, Mark Z was extremely helpful in all phases of the loan and kept me totally informed at all times. I would recommend giving him a chance to help you with all your mortgage needs.

Quality of service, courteous and knowledgeable staff, very patient with new home buyers.

Jun 3, 2025

As a first-time homebuyer, it's easy to be overwhelmed by the entire process, especially when buying in Florida. Luckily our real estate agent, Heidi Adams, connected us to Mark Zhimer and his team at Guaranteed Rate Affinity. Mark, Kara Greer, and Vincent Nastasi walked us through every step of the entire procedure, from a (thankfully) unsuccessful first home inquiry to our much more satisfactory and successful second target, which we are now the proud owners of! The whole GRA team answered endless questions, guided without nagging, and were available even when they should have had their time away from the office to relax. If you are looking for professionals who can answer your questions in a way that you as a novice can understand, reach out to Mark and his crew - you'll get the guidance and advice you need!

Apr 5, 2025

Mark was such a big help when my husband and I were purchasing our new home. He answered all of our questions and gave us in depth explanations about the lending process. Any barriers we ran into, he was there problem solving to get through them. By closing day, my husband and I were prepared and better equipped with what to expect for the home owning experience. We recommend him 100%.

Fast service

Feb 18, 2025

Mark and his team were absolutely amazing. They stayed on top of everything going on throughout the process and answered all of our questions with urgency. They made us feel extremely prepared and knowledgeable of what we were looking at going into the purchase. It was an absolute pleasure to work with them and I would use them in the future and recommend you use them for you’re home buying needs!

Communication was the best!

It was again another near effortless experience on my end. I notified Mark we were in the market for another home and he did the rest. Excellent experience from start to finish.

Very knowledgeable and responsive

Credit is good

Because the team guided us every step of the way with the process. All our questions were answered and the team was very thorough.

Very helpful dedicated service

Great customer service and very clear if we had a question.

Mark was very responsive and helped to get us the best rate for us. I am thankful to have Mark and his team by our side during this process.

Great customer service! Smooth transaction

Excellent customer service. Helped every step of the way

Mark was very helpful and answered all my questions promptly

Great service, quick responses, good explanations on details, always looking out for my best interest.

They were amazing at communicating with me and helping me through the home buying process.

Fast and friendly. Great communication I was able to get a loan approval letter quickly for purchase.

Great rate, great service and everything went smooth.

I appreciated the responsiveness and willingness to communicate through multiple forms of communication. I felt taken care of throughout the entire process.

Mark Zihmer is fantastic. He explained anything and everything to ensure we understood the what's and why's. He was answering emails while on a work function retreat in Mexico. That's dedication to the client. Mark came highly recommended, and did not disappoint.

Everyone was friendly, helpful and always took the time to answer my questions

Very satisfied, quick and efficient!! Made the whole process painless!!

Mark was very responsive and professional. The rates were also very competitive. The whole team made a potentially stressful process easy and painless!

I had a great experience workign with Mark and his team! We were very satisfied because you guys did a great job!!

Great contact with all parties. Mark, Sean and Tara were there to answer every question at all times of the day or evening.

Mark was amazing. He made everything start to finish as smooth as possible. Answered questions and covered everythign we needed to know. He was referred to us and highly recommended. When it came to closing day, there were no worries.

Great communication and worked quickly.

Very knowledgable and responsive.

Because the team guided us every step of the way with the process. All our questions were answered and the team was very thorough.

I cannot tell you enough how grateful I am for all of your help acquiring my first property so many years ago. I appreciate how you were there with me every step of the way and could not have done it without you and your team!!