Mario Greco, Founder  (The MG Group) Real Estate Broker/Owner



Mario Greco
location_on Chicago, IL — The MG Group
Get to Know Mario Greco

Born and raised in Chicago, Mario Greco came to real estate by way of engineering and law. He graduated with honors from both Northwestern University (with degrees in Chemical Engineering and Environmental Engineering) and Boston University School of Law. He practiced law for several years at Jones Day and Kirkland & Ellis in Chicago in their Intellectual Property Litigation departments. While practicing law full time, he started his own real estate brokerage firm and sold an average of $9M worth of real estate a year on a part-time basis. Since then, Mario’s business has grown significantly while partnering with companies such as Century 21 Sussex & Reilly, Prudential Rubloff Properties and now BERKSHIRE HATHAWAY HomeServices KoenigRubloff Realty Group.

Throughout his career, Mario has consistently proven to be a top producer. He has been recognized as being in the top 1% of Chicago Realtors® every year since he started selling real estate in 2002, and his total sales have already amounted to over $1 BILLION. Mario has been ranked Top 50 in the Nation every year by The Wall Street Journal since 2011. And he has been the city’s top producer in key neighborhoods over the years such as Lincoln ParkLakeviewAndersonvilleWrigleyvilleIrving ParkAvondaleSheridan ParkUptownRavenswoodOld Irving ParkRoscoe VillageSt. Ben’s and North Center.

As the founder and leader of the The MG Group at BERKSHIRE HATHAWAY HomeServices KoenigRubloff Realty Group, Mario oversees all pricing strategy, marketing plans and buyer/seller negotiations for all Group clients, and ensures that the Group operates with market-leading expertise and optimum efficiency. He is proud of The MG Group’s widespread recognition for their unique ability to deliver both speed and value to their clients throughout every real estate transaction.

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Mario lives in Chicago’s Lincoln Park neighborhood with his rescue dog, Jack.


Residential Sales in Chicago, and the Northern, Western, and Northwest Suburbs.

After nearly a year of frustration with trying to sell my property, I took it off the market to regroup. During that time, I was contacted by Haakon Knutson and The MG Group and knew immediately they were the ones. I was updated every step of the way and absolutely every single person was great to work with and so kind. Even better, I had an offer in 10 days thanks to their relentless followup with prospective buyers. This was a GREAT experience and I will recommend Haakon Knutson and The MG Group to absolutely everyone I know!
Thank you Mario and The MG Group for all of your efforts to ensure an efficient and highly effective sale process for my condo. Your team’s professionalism is unmatched and your ability to run the sale process much like a corporate M&A transaction is a true differentiator. Thank you!
Elmer and Shoshannah
t’s been so great as first-time buyers to have all the wisdom and knowledge that your Group has brought. We were able to really relax and enjoy the process of looking at places. Alice was fantastic about getting us in to see what we wanted, suggesting places that we might have overlooked, and helping us be as careful and critical as we needed to in this process. And the whole Group has been wonderful with making us feel like we were being guided and protected through procedures that were totally new to us! We recommended you to our friend based on the experience we’ve had, and we will totally continue to recommend you. :>
I simply can’t say enough. We had a tough property we were trying to sell remotely, and Mario and his folks went so far above and beyond, it was incredible. We had the first contract fall through (no fault of the MG Group – buyer flaked out), and they dove right back in, coordinating getting it back on the market and back under contract fast. Because we sold remotely, MG Group had to do EVERYTHING, and they rocked it. Could NOT have asked for better, and while they may not want any referrals from us after what a pain in the butt our property was to sell, they’re going to get them!
Mario and his group are outstanding. I had bought through Mario previously and just bought/sold properties to meet our growing family. He has such a deep understanding of the market and entire process. The Group was great and it was an extremely efficient process. And, Mario was extremely helpful in finding a necessary contractor to help with a small issue that arose during the sale process. He was honest, insightful and transparent with all parties. I will continue to use the MG Group.
Scott & Nora
We’ve relied on The MG Group several times over the last ten years. They’ve helped us buy and sell a condo, navigate a short sale, find a rental home and buy a house. We really can’t imagine ever using anyone else. Everyone is extremely engaged, friendly and easy to work to work with. They know when to be aggressive and when to be patient and are the ultimate in professionalism. Thanks in particular to Haakon, who’s never too busy to answer a phone call or an email and makes us feel like we’re not just clients, but friends.
Kristopher & Michelle
Hi Mario, Alice and team - just wanted to send a quick note of thanks for all of your work on the purchase of our loft! We've been there for a week now and absolutely love it. We appreciate how easy the process was with all of the help and support we received from you guys. Will definitely recommend your team to anyone we know who needs to buy and/or sell in Chicago or the ‘burbs.
Dan & Mary
One of the best decisions we ever made was to allow The MG Group to sell our condo! You have a great crew! We will definitely pass your name along and recommend your services to anyone looking to buy or sell a home. Truly the best and most professional group we have ever worked with and we have bought and sold many homes over the years. Thank you again, Mario, from both me and my wife!
Louisa & Larry
We are both business professionals and understand what it takes to win in business. It is crucial to only work with the best and The MG Group is simply the best in the real estate business in Chicagoland. This is the 3rd property that Mario helped us sell since 2005. They are very unique properties located in different areas of Chicago. Over the years, Mario has established a group that gets the job done regardless of area and price range. Real estate transactions can be stressful enough, but The MG Group really does make it stress free. We will recommend The MG Group to everyone we can.
Joe & Chris, Pat & Laurie
Mario Greco and his team did a great job giving us guidance on staging the property, the market price, bring in a good number of potential buyers, communicating to us a summary of the potential buyers feedback, keeping us informed on the next step in the process, negotiating contract terms and quickly closing at our asking market price. The team was extremely responsive to call-backs and answering any questions that we had regarding the sale of the property. My wife and I have purchased and sold a number of homes over the years and Mario and his team rank as #1 in our experience.
Family of R.K.
Quality service is always expected when dealing with a professional organization like the MG Group. However, there are times when it is more appreciated than others. One such time is the sale of a home that is part of an estate. The normal issues inherent in selling a home are complicated by the fact that the property in question has emotional ties to the sellers and the process is exacerbated by the need to satisfy a family that is already under stress. Ours was such a sale. The MG Group made the process easy for all concerned. From the initial walk through of the property by Mario, through suggestions as to how to best present the property, to pricing and on and on through the eventual closing, the entire MG Group was omni-present, insuring that we never had to be concerned about the eventual satisfactory conclusion. We highly recommend the MG Group to anyone wanting to sell or buy a property. If high quality representation is what you are seeking, selecting the MG Group is the correct decision for you.
Thanks so much for the excellent work on the sale of the property. I couldn’t have been more pleased with the work of The MG Group. The communication, feedback, advice, execution and professionalism was second to none. If/when we have a property sale we are looking to execute in the future, I would definitely want the opportunity to work with your Group again.
Vinnie & Amy
Our home selling experience was beyond our expectations with challenging circumstances. Everything was handled with the most professionalism and really beyond anything we have experienced. First, we were referred by a friend to the group, but our primary reason in choosing was the Marketing Plan presented to us. The MG Group had an expertise with marketing and executing that is above the competition. Every challenge presented to us, we were appropriately advised and able to make sound decisions regarding the sale. We will be referring friends/family to The MG Group and have much respect for everyone that helped during the sale.
Chad & Jillian
It was such a great experience working with Haakon and the rest of the MG Group. Our expectations were far exceeded and we felt completely at ease through the entire selling process. The communication and responsiveness of the entire team was exceptional. They truly took the responsibility of the selling process upon their shoulders while keeping us in the loop the entire way through. Their professionalism and work ethic is unmatched and they earned every penny of their commission. Our condo was under contract in 7 days for full asking price after multiple showings each day. We will recommend Haakon, Mario, and the entire MG Group to anyone in the market to buy or sell their home for years to come. This was by far and away the best experience with a Realtor and real estate group that we have ever had.
James & Bridget
Bridget and I want to thank you and your team for you work on selling the condo. Being long distance landlords has been a burden and we are thrilled to be able to close that chapter of our lives. As you well know, several years ago, I chose another real estate agent to list my place. Yet you stayed in touch and answered my out of the blue questions without hesitation. We knew that we should have gone with you and, when it came time to try to sell again, you were the only call we were going to make. I have been so thrilled with that decision. Your advice has been spot on and your team has been great. I particularly appreciate how accommodating your team has been to make the process easier for us given that we are out-of-state. If I get asked for referrals of Chicago real estate agents I won't hesitate to recommend your group. Should Bridget and I find ourselves relocating back to Chicago in the future -- which is a distinct possibility, although nothing is planned -- we most definitely will be looking to engage your group again.
Micah & Tabitha
This was my 3rd transaction with Haakon and The MG Group and in each case my expectations have been exceeded. The professionalism and quality of service of Haakon and the MG Staff is the best I've ever worked with and I will continue to refer friends, family and associates.
Jose & Katy
We had such a wonderful experience selling our home with Mario Greco and his team. Laura scheduled an appointment with us and Mario within 2 days of our call. Mario was thorough and his knowledge of the market and the best approach to sell our home was invaluable. We were under contract within 10 days of going on the market. We had 16 showings in less than 10 days! They get the job done. My husband and I were confident in Mario and in his team. Thank you so very much for helping us with the overwhelming task of selling our home!
It was a pleasure working with Haakon Knutson on our listing. Not only did he sell our place in 4 DAYS but he was very valuable in the process from start to finish. He also helped us find the place we are moving into next week. There was so much more to do related to selling/buying than the last time(s) I/we went through this...I would highly recommend Haakon and the whole MG Group.
Prashant & Preeti
Once again thank you to you and your team. The whole process went very smoothly from our perspective. You have a great group of people working for you. We were very impressed with the attention to detail and thoroughness your team strive for on every step of the selling process. We will definitely be reaching out to you for any of our future real estate needs and also recommend to any of our friends looking to buy or sell.
Reza & Kirstin
We were so happy in choosing Mario to represent us for the sale of our condo. Uptown is not the easiest market, but with some time, patience and a lot of hard work (37 showings!), we finally managed to get a great offer on our home. Happily we were the 1st 2 bed/ 2 bath condo in our area to break the $300,000 threshold in almost two years! We loved Mario’s honesty and his willingness to listen. He was willing to go the extra mile to ensure the deal completed to our liking. Mario was 100% effective in negotiations. We had a few lowball bids, and Mario made it clear that was not acceptable, and he pushed until we got an acceptable offer. Post offer, in attorney review he still negotiated for us which was great. To say we were impressed with Mario and his amazing Group would be an understatement.
Todd & Sharon
Selling our place from over 200 miles away is never an easy task, and we couldn’t have done it without the professionalism, expertise and outstanding customer service that the Mario Greco Group Provides. From the initial contact with the team before our condo was on the market, we knew that we were in good hands. We really felt that the entire team was on our side, and had our best interests in mind. The selling process can be daunting, but the team really helped move it along and in the end the entire process took less than 3 months. We highly recommend the Mario Greco Group when selling your home or condo. Not only are they extremely knowledgeable, but the overwhelming amount of feedback and communication we received really helped keep us in the loop each step of the way and our questions were answered before we were even able to ask them!
Mario was the last agent I interviewed, just by chance. So glad I chose him – I felt he was truly aware of my home’s value in the neighborhood and understood my moving needs. I feel that no other agent would have worked so hard on my behalf, both on price and procuring the sale. His whole team was great, hard-working, and courteous.
Thank you so much to you and your entire team. It was my pleasure working with the most professional and classiest team in all of Chicago. Your attention to detail and extensive follow-up was second to none. Your practice and belief mirrored my own personal ones. I appreciated each and every update you relayed to me throughout the selling process from the onset to the closing. You have made me a lifelong client. I have recommended your services to friends and neighbors and I will continually do so indefinitely.
The Mario Greco Group skillfully assisted us with the sale of our Ravenswood condo unit. From initial market analysis, photography, marketing, showings, and closing, we received engaged service from Mario and his team. In addition, as accidental landlords, we appreciated that Mario's team worked well with our tenants, keeping them in the loop when they needed access to the property. Also, it can’t go without saying that Mario is a seasoned professional who possesses an astute understanding of market conditions. For example, he helped us determine a price that drove interest in our unit and led to a sale that was quite close to our initial price.
My experience with The Mario Greco Group far exceeded my expectations. I purchased my condo 3 years ago and Mario Greco was the seller's agent of the condo. My experience as a buyer with a different agent and the way Mario marketed the property when I bought it, I knew I wanted Mario on my side when I decided to sell my condo. From the initial contact for a consultation to closing, everyone in the group was very responsive, professional and courteous. I was able to quickly meet with Mario and he gave me his honest feedback regarding what I should do to prepare and market my condo and the next steps if my condo did not sell during the original listing period. Thankfully I had a recent comparable in my building but I was still nervous having a 1 bedroom with little equity. Within a few days I was listed on the market and received a cash offer in just 8 days from listing! Dealing with The Mario Greco group was stress-free and they were very helpful and patient dealing with my non-responsive attorney. With the assistance of The Mario Greco Group I was listed and closed in under 30 days. My fiancée and I were so impressed with our experience that we will without a doubt recommend The Mario Greco group to anyone in the market and will use them again when we are ready to sell and buy Thank you so much for all of your help and expertise!
Gary & Lina
Thanks, Mario! This was a tough deal to get done and if I had to do it again I would not do it with anyone but Haakon. He was fantastic throughout the entire home- buying process. Never pushy and I always felt like he was looking out for our best interests. In addition, Haakon is very knowledgeable and was therefore always able to explain and answer questions we had regarding the homes we viewed. Last, but not least, Haakon always responded promptly to our questions/concerns. Overall, great client service from your group and we will definitely be looking to work with Haakon and your group again should the need arise in the future.
Jaime & Tom
Jamie and I would just like to say thanks again for all your effort to sell our place! It was an absolute pleasure working with you all - you were on top of everything, communicated with us really well, and answered every single one of our questions almost immediately. You made a really complicated process seem easy, and honestly we couldn't be happier with how well everything went! I can promise you that we'll be recommending you guys to everyone we know! As for us, we've actually decided to put our housing search on hold for a bit, as we're really enjoying our new apartment and the stress-free feeling of renting. At some point we'll resume our search though, and we've already decided that we'd love to work with you guys for that as well.
Gabrielle & Nicole
Mario - Many thanks for your note - and for the tremendous work that Kevin and the team have done over the past several weeks. From start to finish, your group's handling of our purchase was best-in-class. We would not hesitate for one moment to reach out to your team again in the future (as you can see, we are already using your group for the current sale of our condo!) and will certainly be recommending you to anybody who might be looking for representation. As Kevin can certainly attest, at times it felt like the seller wasn't actually interested in seeing the transaction through to completion. Were it not for the tireless diligence of your team - from finding us the perfect home, to recommending phenomenal lending and legal partners, to working with a difficult seller through the closing and beyond, I suspect we never would have made it to the closing table. Kevin and the team went above and beyond every step of the way - and we always felt that the group was doing everything possible to serve our interests. Finally - we have known Kevin for years, both personally and professionally, and he represented us when we were first time homebuers, terrified of buying our condo in 2007. While we obviously hold our personal relationships in high regard - we are business people, and as such business is business. When it came time to find a home (and now in turn sell the condo that he helped us to find), Kevin was the only choice we could fathom making. Not because of our friendship, but because from a business standpoint, we would not trust anybody else's judgement in making this type of an investment. He is truly an outstanding professional. Thank you again - and we look forward to our continued partnership!
I retained Mario Greco and his group to sell my Wrigleyville townhome. The property was sold within a week with well over fifty showings and multiple offers. Every detail was meticulously handled with the utmost professionalism. I was provided feedback with every showing and a member of his staff accompanied the buyer’s agent. I have been in the real estate business for over 20 years, and can attest to the fact that nobody does it better than the The Mario Greco Group.
I want to send a sincere thank you to all included on this email for all the hard work you put in getting my condo sold. Your job was to get it sold and that is exactly what you did. A team effort and collaborative effort is what it took. It is not your job to get it sold price-wise for what I think its worth because you can not control the economy or housing market prices, but can only work with those variables......bottom line is, I have money coming my way and I am not PAYING additional money out of my pocket to anyone .......I will be filing out the questionnaires I have received and will write something on Yelp regarding my experience because it was a good one for sure. This was a big deal for me getting this place sold, despite me loving it, because it was handcuffing me in moving forward in my career onto the next venture!!! Thank you again everyone for the work put in and good luck with the road ahead!!!

The MG Group has been ranked Top 50 in the Nation since 2011 by The Wall Street Journal & Real Trends' The Thousand Top Real Estate Professionals