Mario Greco

Mario Greco

Berkshire Hathaway HomeServices Chicago member of The MG Group | Berkshire Hathaway HomeServices Chicago
Illinois: 475105845
  •   5   (5 reviews)

About Mario

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 Chicago. 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 nearly $2 BILLION. Mario and The MG Group have been ranked Top 50 in the Nation every year by The Wall Street Journal since 2011, have been recognized as a Notable Residential Broker of 2019 by Crain’s Chicago Business, and were awarded Best Team in 2019 and Best Agent Website in 2020 by Chicago Agent Magazine. Mario has been the city’s top producer in key neighborhoods over the years such as Lincoln Park, Lakeview, Lincoln Square, Andersonville, Edgewater, Wrigleyville, Irving Park and Old Irving Park, Avondale, Sheridan Park, Buena Park, Uptown, Ravenswood, Roscoe Village, St. Ben’s, North Center, and Bucktown/Wicker Park. As the founder and leader of The MG Group at BERKSHIRE HATHAWAY HomeServices Chicago, 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.

Mario's reviews

  5  
Mario has 5 reviewsacross 4 different locations, showing 5.
Review Mario
9 months ago
Review of Peter Xantheas and MG Group

From the beginning Peter has made the experience of selling our home easy. He explained the process and made sure my family was informed of every showing. He was especially patient with my mother and made sure she understood the whole process. The whole MG Group was great. Please use Peter and his group for your selling or buying needs.

almost 3 years ago
Sold West Loop Condo

Mario and his team did a fantastic job taking pictures of my unit and their market strategy, along with having heavy traffic with showings throughout the entire listing. His team brings a tremendous amount of area and market knowledge. He not only brings new buyers, but also has a pool of people that are always looking for an investment to buy. With markets like today, you need someone like Mario to get top dollar for your place! I high recommend him and his team as they take control of the process from start to finish and it allows you to feel relaxed and not deal with all the stress. FIVE STARS ACROSS THE BOARD!

almost 4 years ago
The MG Group are true experts and professionals

We originally contacted Mario because friends of ours had used him and the MG Group to buy/sell and had also noticed his signs around our Albany Park neighborhood. We also had been working with another agent in our search for a new home in the North Shore and it wasn’t working for a variety of reasons. When we first spoke with Mario he assured us that the MG Group would be able to help us sell our home in the city and buy a new home in the suburbs. Although skeptical at first, we could not have been happier with the result. Lehigh of the MG Group was tenacious, thorough and patient throughout the process and guided us to a home we couldn’t be happier with. On the list side, Mario gave us great advice on how to prepare our home for sale, where to price it and also had contractors at his disposal to enact the prep plan. We sold our home in just a few days with multiple offers for above our list price and we didn’t waste money or time doing unnecessary things to prepare it for sale. Mario assured us the market was brisk enough and our home was unique enough that we would be able to sell without renovating the home we had lived in and lovingly cared for for 30+ years. Once engaged, we felt comfortable from the very beginning of the process with Mario, Lehigh and the entire MG Group office staff which worked tirelessly (and seemingly around the clock) to see our deals get to the closing table without a hitch. We have sung their praises to our friends, family & coworkers, and we would urge anyone who wants to buy and/or sell in the city of the suburbs to contact Mario and the MG Group – they are true experts and professionals.

almost 6 years ago
First class service

I live in Australia so was quite daunted by the thought of selling a condo in Chicago without being able to be there in person at all. COVID on top of that didn’t help. Process was simple. MG Group is 100% full service taking care of repairs, staging, showings, photos/videos (excellent quality), liaising with the condo association, excellent legal referrals (with whom they worked seamlessly) and several walkthroughs by the new owners. All I had to do was sign some papers! They kept me informed day to day and couldn’t have been more responsive to queries. Worth every penny and I would refer them without hesitation to anyone!

almost 7 years ago
We worked with Haakon Knutson on a first-time purchase and a sale of that home 5 years later knowing

We worked with Haakon Knutson on a first-time purchase and a sale of that home 5 years later knowing the level of service we would receive. We could not have asked for more from an agent or agency. He was attentive, extremely knowledgeable, and always available to discuss questions or sales strategy. As a seller, we had great piece of mind knowing that he was representing us throughout the negotiation, and the staff at The MG Group were a wonderful resource that helped guide the process throughout our listing and transaction. After selling our property in a down market, I can say that having a great agency is a tremendous asset when market conditions are working against you. I would not hesitate to recommend Haakon and The MG Group to friends or family looking to buy or sell in Chicago.

Mario's properties

Mario has 81 properties for sale and sold 148 properties in the last 12 months, showing 4, sorted by most recent activity

SoldMay 15, 2026
$330,000
g/1525 W Cullom Ave
Chicago IL 60613
2
2
Condo
Listing courtesy of Compass
SoldMay 15, 2026
$865,000
3834 North Milwaukee Court
Chicago IL 60641
4
4
2
Single-Family
Listing courtesy of Compass
SoldMay 15, 2026
$410,000
North Fairbanks Court
Chicago IL 60611
1
1
1
Condo
Listing courtesy of Compass
Under Contract
$445,500
1W/839 W Lakeside Pl
Chicago IL 60640
2
2
1
Condo
Listing courtesy of Compass
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