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Leave Us a Review

Our customers are the center of our universe and we’re grateful for them. If you’re willing to share your experience about your interaction with our agency, it’ll be a great help for other people looking to make smart and confident decisions about their insurance and financial services.


Take 60 seconds (or more if you want) to share your story by clicking on one of the review links below.

What our customers say about us...

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Breena I

December 4, 2025

5  out of  5
rating by Breena I
"Amber was very helpful and answered the many questions I had about adding my 16 year old to our car insurance. She worked hard to get us the best rate!"
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Sara Copeland

December 3, 2025

5  out of  5
rating by Sara Copeland
"Justin has been great to work with! He set me up with the coverage I needed quickly and continues to respond promptly to needs as they have arisen after all policies were in place. I highly recommend working with this office!"
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Beth Carter

November 23, 2025

5  out of  5
rating by Beth Carter
"Amber took the time to furnish me with copies of my renewal card and declarations. She was friendly and helpful. Lisbeth Carter"
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Jason Dimelow

November 21, 2025

5  out of  5
rating by Jason Dimelow
"Mike Sena was great, got me a lower rate. Thanks!"
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Mark Pugliese

November 21, 2025

5  out of  5
rating by Mark Pugliese
"Very helpful great working you Steve great job thank you"
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Sid Farber

November 13, 2025

5  out of  5
rating by Sid Farber
"My experience working with them has been excellent. Mike Sena is always there to answer my questions and help me get the best deal!"
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Andrew Shirk

November 13, 2025

5  out of  5
rating by Andrew Shirk
"Mike is the man, always helping me out!"
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Nathan Mccoy

November 12, 2025

5  out of  5
rating by Nathan Mccoy
"Justin was on top on my questions. I sent an email requesting some info and he called promptly and was able to answer all my question and get me the documents I needed."
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Diane

November 11, 2025

5  out of  5
rating by Diane
"Zach, the office manager, is a magician!! He figured out how to reduce our daughter’s rate by over 25%! I spoke to another person and they weren’t able to do this. So, always, ALWAYS ask to speak with Zach as he definitely has your back!😉 P.S. I highly recommend this Agency for their outstanding service!"
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Saul Silva

November 11, 2025

5  out of  5
rating by Saul Silva
"Straight to the point, real easy communication and explanations. Goat"
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Kimberly G

October 31, 2025

5  out of  5
rating by Kimberly G
"Zack was fast to act and help us with our needs. I have used State Farm for over 40 years exclusively and they have never disappointed me. I would highly recommend!"
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Todd Threw

October 30, 2025

5  out of  5
rating by Todd Threw
"Jacob was extremely helpful throughout the whole process. He was very engaging and informative in adding home insurance for our new home. He kept me up to date on what was needed from the start."
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Kassie Little

October 29, 2025

5  out of  5
rating by Kassie Little
"Justin was great with helping us get our coverage transferred from Massachusetts to Colorado. Thank you for your support!"
We responded:
"Thanks for your kind words! We’re glad Justin made your coverage transfer easy. Let us know if you need anything else! - Greg Kostuk Insurance Agency"
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John

October 20, 2025

5  out of  5
rating by John
"Amber did a great job w my claim"
We responded:
"Thanks so much for your kind words! We’re really happy to hear that Amber took great care of your claim. If you ever need anything else, just give us a shout! - Greg Kostuk Insurance Agency"
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Christine Hunter

October 16, 2025

5  out of  5
rating by Christine Hunter
"Justin made this so easy!!! Thank you"
We responded:
"We're so glad to hear Justin made everything easy for you! Thank you for your kind words. - Greg Kostuk Insurance Agency"
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Dana H

October 15, 2025

5  out of  5
rating by Dana H
"Great experience working with Justin! Found all the ways to get me the best rate and best coverage on my new home purchase!"
We responded:
"We're thrilled to hear about your great experience with Justin! Helping you secure the best rate and coverage is our top priority. Congratulations on your new home! - Greg Kostuk Insurance Agency"
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Virgilio Balmori

October 9, 2025

5  out of  5
rating by Virgilio Balmori
"Amber Cantu did a great job! She was professional, friendly, and made the whole experience smooth from start to finish. Her customer service skills are excellent — she really takes the time to listen and make sure everything is done right. Highly recommend working with her!"
We responded:
"We’re happy to hear Amber’s customer service made a positive difference from start to finish. Thanks for sharing your great experience! - Greg Kostuk Insurance Agency"
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WalkerParker

October 9, 2025

5  out of  5
rating by WalkerParker
"Jacob Turbett, along with the entire Kostuk office, has been nothing short of incredible to work with. They are all so kind and work really well as a team. Jacob has went above and beyond in getting our new policies setup, with the best customer care we have experienced. Thank you guys!"
We responded:
"Thanks so much! It’s great to hear Jacob went above and beyond and that the whole team made a positive impact. We truly appreciate your kind words! - Greg Kostuk Insurance Agency"
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Mao Lachis

October 9, 2025

5  out of  5
rating by Mao Lachis
"I mean Jacob was the most helpful agent I could have asked for, he answered all my questions and made everything understandable. Thank you again."
We responded:
"Thank you for your kind words! We’re glad Jacob was able to answer all your questions and make everything clear. We appreciate your trust! - Greg Kostuk Insurance Agency"
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Bryan Applegate

October 8, 2025

5  out of  5
rating by Bryan Applegate
"Zack was very helpful and thorough. I would highly recommend working with him."
We responded:
"Thank you for your kind words! We’re glad Zack provided helpful and thorough service. We appreciate your recommendation! - Greg Kostuk Insurance Agency"
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Tori Carlson

October 7, 2025

5  out of  5
rating by Tori Carlson
"Greg was the most helpful agent. Truly wanted to help get me everything I needed and answered all of my questions and then some ."
We responded:
"Thank you for your kind words! We’re glad you received thorough and helpful service. We appreciate your trust! - Greg Kostuk Insurance Agency"
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kristie Hays

October 6, 2025

5  out of  5
rating by kristie Hays
"Justin was fantastic to work with! Very easy to get quotes from and very knowledgeable!"
We responded:
"Thank you for your kind words! We’re glad Justin made the process easy and provided knowledgeable service. We appreciate your support! - Greg Kostuk Insurance Agency"
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Christy Smith

October 6, 2025

5  out of  5
rating by Christy Smith
"Greg has connected personally even when I didnt purchase insurance. I actually saved his contact. He was very straight forward. I plan on going with the life insurance. He explained everything!"
We responded:
"Thank you for your kind words! We’re glad we could provide clear and straightforward information, and we look forward to assisting you with your life insurance needs. - Greg Kostuk Insurance Agency"
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diana harder

October 3, 2025

5  out of  5
rating by diana harder
"David Harder and myself Diana Harder have been real estate broker for 30 years in the Littleton and Denver area. We are very pleased with Justin Miller from State Farm and the services he recently provided to our clients! His knowledge and listening skills and guidance for what we needed for our clients need was exceptional! We highly recommend Justin Miller, and this State Farm agency!"
We responded:
"We’re grateful for your positive feedback! It means a lot that Justin’s knowledge and attentiveness have made a difference for you and your clients. Thank you for recommending our State Farm agency! - Greg Kostuk Insurance Agency"
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Hannah Harder

October 3, 2025

5  out of  5
rating by Hannah Harder
"I am Hannah’s mother… using her account her for review. My husband and I David Harder have been very fortunate to refer our clients to Justin Miller! We are real estate brokers with 30 years experience. We are very protective of our clients. We were very impressed and pleased with Justin’s knowledge and his good listening skills and taking care of our clients! We highly recommend Justin Miller and State Farm if you were looking for automobile, life or homeowners insurance! -David and Diana Harder Littleton, Co."
We responded:
"Thank you for your thoughtful recommendation! We’re honored that you and your husband trust Justin to take care of your clients. We appreciate your support and look forward to serving you and your referrals! - Greg Kostuk Insurance Agency"