Jon Mark was an absolute dream to work with. Being a self-proclaimed control freak, I'm usually the one to follow-up and stay on top of things. But Jon Mark gave me a run for my money in the Type A Personality Dept. He took care of every detail before it even popped into my mind. He was the ultimate professional and the best realtor that I've ever worked with. As far as I'm concerned, everyone should be choosing Jon Mark if you're selling or buying a house. He handled both my sale and purchase with finesse. I could not be more grateful.

As a mortgage lender who’s had the pleasure of working with Jon Mark on multiple transactions, I can confidently say he’s one of the best in the business. His professionalism, deep market knowledge, and unwavering dedication to his clients set him apart—especially in the luxury real estate market, where experience truly matters. What really stands out about Jon Mark is his work ethic. He’s not afraid to grind as hard as it takes to get a deal to the finish line—whether that means negotiating late into the evening or finding creative solutions when challenges arise. He keeps his clients informed every step of the way and treats every transaction with the same level of care and urgency. If you’re looking for an agent who combines top-tier expertise with relentless drive, I highly recommend Jon Mark. He’s the kind of professional you always want on your team.

Hands down the best realtor experience we've ever had!! Selling a home can be stressful, but working with JME /This Guy Sells AZ turned what could have been a complicated process into an incredibly smooth and positive experience from start to finish. From our very first meeting, it was clear that we were in the hands of someone who not only knew real estate inside and out, but who genuinely cared about getting us the best possible outcome. His knowledge of the market, strategy, timing, staging tips, and pricing were absolutely on point. Every recommendation he made was backed by data and experience, and it paid off — our home sold quickly and at a price we were thrilled with. What stood out the most was his communication. There was never a moment where we felt left in the dark. He kept us informed every step of the way, answered all of our questions (even the ones we didn’t know we should be asking), and handled every detail with professionalism and confidence. Jon Mark made what could have been a high-stress situation feel seamless. He anticipated issues before they came up, negotiated like a pro, and made sure every "i" was dotted and "t" was crossed. We’ve worked with realtors in the past, but no one comes close to this level of service and expertise. Truly, I wouldn’t use anyone else but This Guy Sells AZ. If you’re thinking about buying or selling in Arizona, do yourself a favor and call him first — you won’t regret it.