Mario DeSimone

Cell: 817.307.9700
Office: 800.433.4003
Fax: 817.354.4836
Home ownership is a dream come true and I love being a part of making the dream happen for my clients. My goal is to exceed your expectations and share my passion and knowledge as your trusted ally, throughout the home buying and selling experience. I truly enjoy building relationships with my clients and am proud that many consider me a friend.

I’m a Boston native who grew up and attended school in Arizona. Since my family and I relocated to Texas 6 years ago, we’ve fallen in love with the area and have a deep appreciation for the Texas outlook and lifestyle.

As a REALTOR® for over 15 years, I’ve worked in every facet of the business from single family to multi-unit and foreclosures to trustee sales. My diverse experience gives me a unique perspective. CENTURY 21 has given me the opportunity to use my industry and market knowledge together with a rich customer service background, making me a strong ally to have on your side.

I’m extremely proud to be a REALTOR® with CENTURY 21 Mike Bowman, Inc. which has been named the #1 CENTURY 21 Office in the World 15 times in closed units!

Contact Mario today at (817) 307-9700


First Time Homebuyers
New Homes
Custom Home Builds
Condos and Townhomes
Investment Properties


National Association of REALTORS®
Texas Association of REALTORS®
MetroTex Association of REALTORS®

Some kind words from past clients:

I'm glad that I had Mario to guide me with my first time buying a home. He knows the full process from the initial search, to the final closing. I probably asked him hundreds of questions, some of them very basic as a first time buyer, but he always patiently answered, or was honest enough to admit he didn't know, but would find the answer out for me. We found a house after a long first day of searching, and he was always at my side throughout the rest of the process. He has keen attention to detail and is willing to stand up for you if you're adamant about something. An example of this is that Mario found several issues with the home I had bought, and helped me stand up to the builder in order to have these issues corrected before closing. He was very knowledgeable with the contract and was able to protect the home sale while also getting making sure that major issues were not left unfinished before the closing. Mario made sure that I was informed, comfortable and had no doubts with my first home purchase. It never felt like his goal was to check all the boxes and get another sale and move on. If I ever buy another house in the DFW area I hope he will be available again.
- Stephen Weldon

Mario is a fantastic agent! He has helped us get our first residence with multiple bids and helped us secure a wonderful home. His insight and experience makes a rigorous process of buying a house much more enjoyable. I would recommend Mario to anyone and everyone!!
-Kat Sokolova

Mario is very friendly, professional and easy to work with. He always made himself available to show us homes and we didn’t feel rushed to make a decision.
-Susan Fujimoto

We bought a house last year through Mario. It was a great experience. He was professional, trustworthy and was really good at keeping us in the loop with all information. We would highly recommend Mario for the selling or buying of your home.
-Regina and Randy Busboom

Mario has gone way and above his job duties as a Realtor. He is very professional and he is very personable and a joy to work with. I recommend him very highly.
-Bettie Baldwin

Mario was a true professional. I have purchased several homes over the years, and working with Mario was the most enjoyable experience as to date. He made himself available to assist me any day of the week and at any hour, even while he was on personal vacation. Outstanding customer service represented by Mario, I would recommend that request Mario as their agent.
-Russell Hurley

Mario DeSimone was awesome! I called a few realtors when my husband and I decided to relocate from California to Fort Worth Texas and he called me back within minutes. I had read his great reviews and decided to go with him after our brief introduction call. He made the whole process seem easy and he always returned my calls and emails right away. We had a tight time frame to find a house and relocate and he made it possible. He always addressed our concerns and made us feel very comfortable throughout the process. We really needed someone we could trust as we were putting in offers on homes without seeing them, he had to be our eyes and ears for the property. Our prayers were truly answered when we met Mario. He got us our dream home in the neighborhood we really wanted. Thank you so much.
-Michael P Cortez

We both loved working with Mario from the start. We never felt pressured or hurried to make a decision, despite wanting to see some of the properties multiple times. We felt like he always had our best interests at heart. He has a matchless combination of patience and knowledge, and he is definitely the reason we have been recommending him to our friends, families, and colleagues who are starting home searches. As we were leaving the title company at closing, my husband's comment was, "Mario should be the person training other agents." As an aside, we felt that the whole team was great and even when he had other commitments (we have a difficult schedule so our times were somewhat topsy turvy), he had someone from his team meet us exactly when we needed.
-Christiana S Renner

Mario was great. Simply did what we wanted and needed and gave us the information we required. I would highly recommend him to anyone looking for a house. He was there when we needed him. Thanks Mario for all you help!
-Herman Contreras

Mario is very professional, knowledgeable and extremely patient with us on our long search providing useful guidance along the way. Mario and this team were always available and flexible in scheduling showings and very expedient when it came to putting offers on homes.
-Claudia A Briseno

Mario was an absolute joy to work with. When things went south with our lender he even offered to watch our dog for the weekend! Thank you Mario!!
-Nicole Vargas