Globe St.
    Hilgendorf & Waszak 2020, 2021


    Connect Media
    2019, 2020


    Top 100 Magazine
    Zack Hilgendorf 2019


    Real Estate Weekly
    Zack Hilgendorf 2019


    Chad Firsel inductee 2018


    Real Estate Weekly
    Zack Hilgendorf 2019


    National Real Estate Investor
    2015, 2016, 2017, 2018, 2019, 2020


    Zack Hilgendorf 2018


    Chicago Associations of Realtors


    Midwest Real Estate News
    2015, 2016, 2017,
    2018, 2019


    Chicago Associations of Realtors
    2004, 2005


We can share a lot with you about our passion, knowledge and skill in commercial real estate, but sometimes the words of those we’ve served say even more. Here’s how clients have expressed their own experiences and results when working with Quantum.


“Chad has served as an incredible advisor and through his negotiation skills, we were able to get the deal under contract. Chad conducts himself with the utmost integrity and professionalism.”

– Gus Danos, Comar Properties



“Dan was a pleasure to work with in our shopping center acquisition. He was there through every step of the process and if an issue did arise, he was there to tackle it head-on. We appreciate his efforts and look forward to growing our relationship with Dan and Quantum.”

-Bob Priest, REI Equity Partners

“Dan has been the broker on deals for my clients both as sellers and as buyers. In each transaction, he maintained the highest level of professionalism and expertise to get the deal closed. I would highly recommend Dan to future clients.”

– Edward S. Garcia, Jr., Attorney at Law, P.C.



“Quantum sold three properties that I was involved with and they did a terrific job.  One property was a direct sale and the other two involved other brokerages.  They cleared the market for these and executed as they said they would.  I would recommend Quantum to others.”

– Linda Cronwell, Bayview Loan Servicing

“I have closed five transactions with Chad at Quantum Real Estate Advisors, Inc.  In total these equated to twelve properties.  These properties each had their own challenges.  However, Quantum didn’t hesitate to dive right in, understand the deal and get them sold.  I will work with them again when the opportunity presents itself.”

– Brian Harrigan, Vice President, BMO | Harris Bank N.A.



“The advisors at Quantum show ambition, excitement, and energy which is refreshing and uplifting in the midst of what has been one of the most turbulent economic times in commercial real estate.”

– David Bossy, Mid-America Development Partners

“Chad at Quantum was able to close a very complicated transaction for our firm.  He found a buyer who paid retail pricing and closed prior to our completion.  This took skilled brokerage and great facilitation.  I have known Chad for over 15 years and I would recommend him to others.”

– Jason Smith, Smith Capital Management



“Chad has sold us 12 properties. We are very pleased with our relationship and count on Chad to bring us more properties in the future.”

– Jeffrey Sandelman, Property Owner.

“I am writing this letter of recommendation for Zack Hilgendorf. Quantum has closed several transactions for my organization in recent years. Zack is a pleasure to work with, always displaying a great level of professionalism. He has a great ability to place the right buyers with the right deal.

Zack has rare skill sets, including his tenacity, drive, and warmth, which sets him apart from others. He understands the value of maintaining his contacts and is constantly expanding his network. I look forward to watching him continue to achieve incredible success throughout his career.”

– Keith Jaffee, Middleton Partners



“We have been fortunate enough to know Zack for years, His dedication to his clients and knowledge of his current state of the industry is unmatched. Zack has been a pleasure to work with and we look forward to continuing to build our strong relationship and closing multiple deals together.”

– AnnMarie Kelly, FirstChoice Property & Development


“Seth was a pleasure to work with on our MOB disposition. Seth made us feel as though we were his most important client and made himself available 24 hours a day. He was extremely professional and was there every step of the way to make sure our transaction was seamless. I have never hired a broker who worked as hard as Seth did to ensure we achieved the maximum price for our property. I look forward to doing more deals with Seth and the Quantum team”

– David Kurtz



“Seth recently represented us in the disposition of a multi-tenant Medical Office building. This was not the easiest of deals because we were in the midst of a market readjustment where there was a lot of unknowns. Seth was able to produce multiple back-up offers so when the buyer fell out due to unforeseen circumstances there was no lag time and we had the next buyer vetted and ready to move forward. Seth was thinking two steps ahead to ensure the deal got closed in a timely manner and we can’t wait for another opportunity to work with him.”

– Jon Boyajian

“Zack has established himself as a fixture in the national investment sales market at a very young age. I trust Zack’s opinion on the market and I am confident we will be doing business for years to come. I would recommend Zack to help your organization on any disposition for retail product across the country.”

– Jay Ferguson, Ferguson Properties


“We recently had the opportunity to work with Zack on the sale of a shopping center in Nebraska. We currently had this property listed with another broker but after a year on the market, we felt like it was time for a change. I was very impressed with Zack’s constant communication and attention to detail with both parties; I believe that was a significant reason why we were able to complete the deal successfully. Zack has been a pleasure to work with and we look forward to continuing to build our strong relationship and closing multiple deals together.”

-John Sawyer, The Thackeray Company

“Working with Dan was an excellent process. From start to finish he was there, helping to facilitate our transaction and addressing any issues that arose. It was a near seamless process and we truly appreciate his hard work. We look forward to future transactions with Dan and the team at Quantum.”

– Tim Schenk, Patriot Equity Partners 


“Working with Dan Waszak was an excellent experience. Throughout the transaction process, Dan was there to help facilitate, overcome challenges and ensure a smooth closing. I would highly recommend working with Quantum and plan to do so again in the future.”

– Chu Ho Son, Property Owner

“Quantum is a boutique firm with a wide national reach specializing in retail investment sales. Zack is a white-collar educated guy with a blue-collar self-made grinding work ethic. Smart. Hardworking. Cold calling machine! Zack has been a pleasure to work with and we look forward to continuing to build our strong relationship and closing multiple deals together.”

– Jon Boyajian, Echo Development Group


“Zack Hilgendorf is a seasoned professional specializing in investment sales across the country. We continue to recommend Zack to our clients on any disposition for retail product in Chicagoland Area and look forward to a continuation of this profitable working relationship.”

– Brad Schwartz, National Retrofitting Group

“Zack was a pleasure to work with on a strip center he sold for me. He was there through every step of the process and if an issue did arise, he was there to take care of it. I look forward to growing our relationship with Zack and Quantum and hope to do many more deals for years to come”

– Greg Worsley, GM Worsley, Inc


“Zack has always been an excellent source of real estate marketplace information for us. He understands the value of maintaining his contacts and is constantly expanding his network and is why we continue to recommend Zack to our clients on anything real estate. I am always impressed with his ability to bring the right buyers to the table.”

– Sara Kelm, Nova Consulting

“I want to thank Zack Hilgendorf and Quantum Real Estate Advisors for assisting me in the sale of my Hobby Lobby. Zack kept my best interests in mind throughout the entire transaction and his consistent communication made this a seamless process. I look forward to working with him in the future and would highly recommend Zack, along with Quantum Real Estate Advisors to anyone in the net lease market.”

– David Christie, Christie Development


“Over the past three years, Zack has shown an excellent intuition and ability to hunt deals for our acquisition which have provided tremendous value to our portfolio. We look forward to a continuation of this profitable working relationship.”

– Shai Wolkowicki, GW Properties

“I have had the pleasure of working with Zack Hilgendorf and his team on a recent net-lease transaction.  As a buyer’s agent, it was refreshing to work with a listing agent that holds the highest regard for honesty, thorough communication, and document disclosures, and always strives for a win-win transaction. I have found the listing agent is as important as the listing and I would highly recommend Zack as a trusted listing agent. I look forward to closing many transactions with Zack and his team in the near future.”

– Jay Cohlmia, Newmark Knight Frank


“Zack recently represented us on the sale of a net-lease asset we developed in Missouri. I was very impressed by Zack’s determination and fortitude. This was not the easiest of deals and Zack was able to balance the needs of both parties to complete a successful transaction.

Zack has been a pleasure to work with and we look forward to continuing to build our strong relationship and closing multiple deals together.”

– Matt Gibbs, ReCor Properties

“Zack is a workhorse that gets deals done, understands the value of time, and creates lasting relationships that make it extremely easy and enjoyable to do business with.”

– Mason Ghaniabadi, Brady Properties


“We recently engaged Quantum Real Estate to assist us with the sale of one of our properties.  Chad and Jason did an outstanding job of canvassing the market and ultimately closing a challenging sale.  Despite some of the typical headwinds we faced, and some not so typical, Chad and Jason never lost sight of our objective.  They kept everyone involved and informed, and got us through the closing.  Throughout the process, we leaned heavily on their expertise.  They delivered honest and direct advice and helped us clear each hurdle we faced.  Our firm and our buyer were well taken care of and were both very pleased with the outcome.  Without a doubt, we will call on them to manage our next deal.”

– Chris Craig, Northern Indiana Education Foundation

“Working with Jason Lenhoff was a great experience.  He worked relentlessly and tirelessly to market and negotiate the sale of my property.  His decades of experience proved to be beneficial in helping me negotiate the best terms possible so that I could achieve the highest value for my property.  I would highly recommend Jason to anyone who wishes to work with someone that is well-rounded and aggressive in his approach to buying and selling real estate.”

– Val Triff


“I had the pleasure to work with Jason Lenhoff on the purchase of 200 North Milwaukee, Libertyville, a retail center. Jason was not only on the mark in terms of his financial analysis of the market but gave sage advice during the various negotiations with the seller. Jason’s service extended well beyond his analytical abilities and good counsel but his responsiveness was second to none. I look forward to working with Jason again in the future and will not hesitate to refer him.”

– Frank Jaffe

“Seth was a pleasure to work with on our Veterinary Acquisition in Texas earlier this year. He kept us informed and up to date every step of the way and was able to orchestrate a very smooth transaction. Seth had our best interest in mind and won us the deal in a very competitive bidding process. Seth was very organized and well prepared for all of our calls to ensure deadlines were met. I look forward to working with Seth in the future on both the acquisition and disposition front. His expertise in the medical sector is very much appreciated and necessary to get deals across the finish line.”

– Kumar Jasani