Meet Our Team

Meet Krista
Team Leader

Krista was born and raised in Marysville, Ohio and enjoys going back to visit whenever possible.  She moved to the St. Louis area in 2014 and enjoys all of the restaurants, events and activities that St. Louis has to offer. 

In her spare time Krista enjoys playing the piano and singing, taking walks with her husband and two dogs, entertaining in her new house and hanging out with her two children.

Formerly a teacher, Krista started her real estate career in 2011 and has greatly enjoyed helping both buyers and sellers with all of their real estate needs. She does everything she can to create a positive home buying or selling experience for her clients. She is quick with open and consistent communication, and uses her skills in negotiation to obtain the best possible results.

Krista has helped over 250 clients buy and sell real estate in the greater St. Louis area since 2015. She looks forward to helping many more in the years to come.

Krista Hartmann Realtor
Credentials and Awards


SRS certificate- Seller Representative Specialist

PSA certificate- Pricing Strategy Advisor

RE/MAX 100% club

During 2017- Top 25 of all RE/MAX area agents

RE/MAX Platinum Club -2018

2017 RE/MAX Results agent of the year

2016, 2018 - RE/MAX Results West County Agent of the Year

Advanced Business Connections -Chapter All Star

Meet Tammy
Tammy Halveland - Buyer Specialist


Tammy joined The Hartmann Home Team in 2019.  She was born in rural Iowa and moved to St. Louis in 1994.  After spending 24 years in the paper sales industry, she decided to pursue her passion of sales in the real estate.  In her spare time, Tammy enjoys spending time with her husband, kids and pets as well as watching St. Louis sports.  Her favorite sports team is the Special Olympics Falcons.  She has coached the team with her family for over 10 years in basketball, soccer and softball and will continue to do so for many years.  She strives to provide a great buying experience for her clients through her many years of negotiation, communications and superior customer service.  She would love to help you find your new home. 

Meet Nathan
Nathan Dehn - Buyer Specialist


Nathan joined the Hartmann Home team in 2021. He was born and raised here in St. Louis. After spending time as a Lutheran School teacher and youth director for his church, he decided to pursue his passion of real estate sales. In his spare time he enjoys going on walks with his wife, Jenna, and their puppy Penelope. They love exploring St. Louis City and all of the unique shops and restaurants. Nathan spends time volunteering at his church, especially helping with the youth group and Sunday worship volunteers. As a former educator and coach, Nathan has a heart to guide his clients to make an informed decision on purchasing their new home while providing superior communication and support. He would love to help you find your next home. 

Meet Stacy
Stacy Knorp - Media Specialist and Client Care


Stacy has been with the Hartmann Home Team since 2016. Formerly an educator, Stacy now manages much of the marketing for the Krista Hartmann Home team.  Using her creative background as an Art educator, she designs professional printed and digital media to help make their home listings stand out in the crowd. 

In her spare time she enjoys being outdoors, taking walks, volunteering at her church, and spending time with her husband and two daughters.

It matters who you work with!

Take a look at a few reviews


Krista is great! She is knowledgeable and experienced which is invaluable as you navigate the sometimes tricky business of selling a house. She maintained excellent communication with us throughout the sale of our home and helped troubleshoot all of the little hiccups along the way. Her  enthusiasm and confidence never waiver. We have worked with quite a few realtors over the past few decades and Krista is A+!


Krista was great! She was very attentive and knowledgeable. Krista was prompt with returning emails and phone calls and was all around nice to work with. I would highly recommend Krista to any of my friends and family. I also participated in the Homes for Heroes program and was very surprised by  the discounts that I received. It was a great experience and so easy.


Krista helped our family sell a childhood home shortly after a death in the family. She was professional, attentive, and empathic to our situation. She made the experience as smooth as possible given the circumstances. We would highly recommend her if buying or selling a home. She’s the best!!