DeWitt Team


Service Beyond Your Expectations


As a John L. Scott broker, my mission is transactional excellence and client satisfaction. That means I work tirelessly to make your home buying or selling process as efficient, stress-free and lucrative for you as possible.

Meet Mark

I was born into a real estate family and I always knew it was the career for me! My father was a homebuilder in Southeast King County and my mother was not only a mortgage broker, but also the founder of a large mortgage company. My wife’s parents were both real estate agents in Federal Way and convinced me to try appraising real estate. I transitioned from an eight-year career building homes to becoming an appraiser for six years and then moved into real estate sales in 1994.

I work with my wife Tanya and together we make up Team DeWitt based out of the John L. Scott Renton office. My years of experience in a variety of aspects of real estate lend itself very well to my current role. Whether it’s providing guidance or offering hands on help, we are solution minded, no matter what the challenge is. We will do whatever it takes to assist our clients in meeting their goals.

I primarily work in the city of Renton, but I also help clients buy and sell in Issaquah, Newcastle, Bellevue, Covington and Auburn. My job is to advise home sellers, buyers, real estate investors, landowners and developers on how to get the highest net return on their real estate investments and I take that very seriously.

Although I love my job, I also enjoy spending time with my family and whenever I can, especially outdoors. Camping, hiking and fishing are other hobbies of mine.



Conveniently located between Seattle and Tacoma, Kent is the third largest city in King County and the second oldest. Despite its size and age, Kent maintains a close-knit community and boasts every modern amenity. Kent is home to the Showare Center, a multi-use events center that hosts concerts and other live events and is the home of the Seattle Thunderbirds hockey team, the Tacoma Stars of the Major Arena Soccer League, and the Seattle Mist of the Legends Football league. Touring shows like the Harlem Globetrotters and Disney on Ice also make stops at the Showare Center. In the heart of downtown, Kent Station is an open-air center for shopping, dining, relaxing and seeing movies. Kent Station also holds events throughout the year like Halloween trick or treating, Easter egg hunts, summer concerts, and pictures with Santa during the holidays. Kent residents love to get outdoors, taking in the views of Mt. Rainier from one of our many parks, biking along the valley trails, and bird watching at the Green River Natural Resources Area. You can find unique and historic homes here as well as newly built ones. If you’re looking for a friendly neighborhood, Kent has you covered. If you’d like to learn more about Kent, let us know. We’d love to show you around and help you find your perfect home.


Mark and Tanya did an excellent job with the sale of our home in Maple Valley. Mark was attentive, active, knowledgeable and kind. He sold our home in two weeks and helped us weigh our offers in an efficient manner. The close was easy and he was more than helpful in finding the next location for our family. I recommend the DeWitt Team and am glad we found them. I will use them again when we buy our next home!”—
– Thomas C.

“Mark and Tanya are great. Our house sold quickly and for full asking price! They also helped us find a new home and coordinate the closings. It was a great experience. They always had time to answer questions and assist us whenever needed. Seven days a week.”
– TLWhitfield

“I interviewed five different realtors and Mark was the very best! The process of selling a house, after living there over 20 years, was extremely stressful. Mark was instrumental in getting us to market. He priced the house correctly (where other realtors tried to low-ball us), he told us what we needed to do and not do to the house before we listed AND he was with us every step of the way!! He is not afraid to get his hands dirty and is more than willing to pitch in. Even when the stress was really high, he walked us off the ledge and came up with real solutions. I would recommend Mark and his team very highly. We would not have gotten the house sold without him!!”
– Ssbokor