Alexander Brown

Portrait photo of Alexander Brown

St. Charles

950 Caledonia Drive
O’Fallon, MO 63368

Office: 636-720-1100
Direct: 636-387-2199



Integrating years of unique experiences, sharp skill sets and individualized talents, the Knobbe Realty Partners and Lake Ozark Realty Partners were formed to align our specific skills to the needs of our clients. One of our greatest attributes is identifying needs and strategizing solutions with each client in the buying, selling and new construction process.


Provide each client with the highest level of personalized customer service, detailed market analysis, hands-on interactions, innovative marketing and follow-up communications. We will work tirelessly with our partners as valuable resources to ensure a positive and seamless real estate experience for each client.


With various backgrounds and experiences in new construction, real estate, finance, education, staging, public relations, sales and marketing, each team member offers unique talents. With every real estate sale or purchase, we collaborate in order to focus our attention on our specific areas of expertise. We set ourselves apart by dividing our roles rather than trying to individually manage every task. 

We look forward to serving you in multiple markets!


 Just a Little More about Us....

Marty and Kris Knobbe, who are both from the St. Louis area, share their passion for real estate and family. While they worked in separate but complimentary industries prior to forming the Knobbe Realty Partners, their combined vision was to always help others achieve home ownership. After having enjoyed a successful career in mortgage for 12 years, Marty Knobbe decided to apply his problem solving, sales and negotiating skills to the real estate industry in early 2015. Known for his charisma, problem solving skills and ability to build long lasting relationships, Marty earned a reputation as a client focused industry leader. As a former teacher, Kris Knobbe, entered the new homes sales industry in 2007 with the intent to help educate new construction buyers on the process. She received the Homebuilders Association Rookie of the Year in 2007 which was just the beginning of her successful career as a licensed realtor and new construction community sales manager. With her focus and dedication to others, Kris worked tirelessly to sell customized homes to families and grow communities. 

 Marty and Kris Knobbe blended their personal life with their work lives with the initiation of the Knobbe Realty Partners with BHHS Select Properties. Integrating over 12 years of their unique backgrounds, experiences, sharp skill sets and individualized talents, they created a systematized process that has proven to help buyers and sellers. With each sale, Marty and Kris successfully collaborate to provide the highest levels of personalized service, detailed market analysis, hands-on interactions, innovative media marketing and follow-up communications. They recognize the importance of exposing homes across a National market and the benefits of cross selling in multiple local markets – St. Louis, St. Charles County and Lake of the Ozarks.

 When Marty (youngest of 6) and Kris (oldest of 3) are not focused on their real estate business, they spend time with their family in St. Louis and at the Lake of the Ozarks. When the married, they blended a family of four girls - Meagan, Emily, Mia and Sophia (twins). All four girls have unique interests in various hobbies and sports - soccer, dance sewing and art. But like the rest of their extended families, Marty, Kris and the girls all share a common interest in boating at the Lake of the Ozarks, Cardinal Baseball and Blues Hockey. The newest additions to the family are their son-in-law, Presley Becker, who is serves in the US Navy, and their granddaughter, Arya Becker. 


Ask Alexander Brown


Kourtney was there for every step of my process. She was encouraging answered all of my questions and made the whole process extremely easy. I’ve never sold a home before I have not moved in 40 years and I was very apprehensive. She consoled me was very supportive and I couldn’t ask for a better agent!

- Martha K

It was a great experience and I would definitely recommend her to other friends and colleagues.

- Kourtney K

Kourtney spent the time getting to know what we were looking for in buy the property. No one else spent the time getting to know is and what we wanted. She focused the search and gave us plenty of opportunities. Because of her due diligence we found the perfect property. I am very happy with how things progressed. I will definitely recommend her to friends and family.

- Erik O

Kourtney spent the time getting to know what we were looking for in buy the property. No one else spent the time getting to know is and what we wanted. She focused the search and gave us plenty of opportunities. Because of her due diligence we found the perfect property. I am very happy with how things progressed. I will definitely recommend her to friends and family.

- Erik Olson

Kourtney Kapfer is great! I hadn't met her previously to buying a home, but I'm so glad she was my realtor. She was on the ball, kind, and had a lot of helpful knowledge. I would recommend her to anyone.

- Janell, Clifton Heights

Kourtney Kapfer took the time to put together a sales plan and executed it perfectly even during the COVID-19 epidemic. She stuck to her plan and rejected low ball offers getting me top dollar for my property. It actually sold for more than any other house on my street ever had. Her personality and seller friendly attitude makes her a pleasure to work with. I’d highly recommend using her to any of my family or friends.

- Cody Bell St Louis MO

I was a first time home buyer and had no idea what I was doing. Kourtney walked me through the process. She knew exactly what to do and made the process easy for us. She’s an amazing realtor and would recommend her to a friend.

- Steffanne Hargus

Did a great job, sold 3 properties in 8 weeks, got price I asked.

- P. Rankin St. Louis, Mo.

She was real there to make sure I was confident in my buying preference!

A great realtor agent to use! Thanks

- Andy Stevens, Warrenton, Missouri


We appreciate everything you've done for us throughout this sale process! Although there were things that were out of everyone's control you always went to bat and put in the extra hours to get the house sold. We cant thank you enough. You are a amazing realtor and I know you will have great success in the future. Hope to see you soon!

- Chris

I just like working with her, will use her again and again. Thanks for sticking with quality on a company level and with the agents you have working with you,,,,,

- WIB Enterprises Corp Jeanette Wehner Pres

Kourtney Kapfer is very outgoing easy to talk to. She worked hard to get what we were asking for in the sale price of my property. Everyone at the office for closing was great to work with. Would recommend Kourtney Kapfer and Berkshire Hathaway Home Services Select Properties.

- Craige Ottwell, St Charles

Very quick sale. Kris already had a buyer for our condo before it was listed. Also kept us in the loop every step of the way. This would be the third home/condo I have bought or sold with Kris and Marty.

- Paul O

Kris was amazing! She walked us through every aspect of the sale, and answered all my questions and didn’t make me feel silly for asking some of them. The whole process was made very easy thanks to her.

- Terry H

We have Bought and Sold 2 properties with Kris & Marty. They really do have a pulse on the market and they truly have an interest in their clients.

- Trichel V

This is my second time using this team for my real estate needs and like the first, they were amazing. They go above and beyond to make the end to end process smooth and as stress-free as possible. I'm especially pleased with how they approached the sale of my home during this crazy market ...caring for my best interest but also showing compassion and understanding for the Buyers. They executed a plan that did not assume multiple offers, did not manipulate to push for a bidding war , showing that they are both fair and ethical. That goes a long way with me. While we still received 7 offers (tremendous result), even that was a bit stressful and weighed heavy on me, knowing what the Buyers we're going through. They talked through each offer with me and helped guide me in making the best decision. I also appreciate that they took the time to call each Buyer's Agent to let them know immediately after one was accepted in order to not just let them and their Buyers find out over MLS. I respect and appreciate that they are professional and compassionate, realizing the human side to these is not just $$$ signs to them. They went above and beyond and always add special touches, like little gifts even beyond the close of sale. It all makes a difference and combines to be the perfect choice! I will not hesitate to use them again and highly recommend them to anyone looking to sell or buy their next home.

- Chantelle J

Great team!

- Stephanie C

Great team!

- James C

They were both so nice and made selling my home a pleasant experience.


Marty and Kris were so easy to work with and patient while we searched for our perfect home at the lake. With their knowledge of the area and helpful guidance we were able to find a condo we love. I would never buy another lake property without them!!!

- James S

Kris & Marty always go above and beyond to help get your home sold. They work diligently to get you top dollar.

- Steve J

They are awesome!

- Katie S

Kris and Marty,Thanks for all your efforts and help in selling our house quickly, at a  great price.  It happened so fast it seems like it took didn't take any effort at all but I know that isn't the case. Your knowledge of the  market, Lombardo houses, and connections to other agents made a big  difference in getting it done!!  Again, thanks.Bob and Katie

- Bob B

Marty n Kris Knobbe have their finger on the pulse of real estate. I had a feeling they had a buyer for my home before I even called them and they did. I know Marty and Kris' personalities and proffesionalism make them a great team to get the deal done.

- William G

Marty and Kris are incredible. Super professional, lead the way, and take all pressure off. On a 1 out of 10, I give an 11.

- Craig