The CORE Team

Our sales performance at a glance

See how The CORE Team has performed in the last 12 months on RateMyAgent*

Reviews

Properties for sale

Sold properties

$346k

Average sale price

$26.6m

Total sales value

*Includes all properties sold (last 12 months) where the agent was a part of the transaction and published on ratemyagent.com. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

Meet the team

Get to know the 5 agents at The CORE Team.

Wendy James

REALTOR®

(72 reviews)

About Wendy

Buying and selling homes and making dreams come true is my passion!

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Christopher Dietrich

Team Leader

(21 reviews)

About Christopher

I’ve been in the real estate industry for 8 years and continue to learn and grow everyday. I believe in honesty and transparency and love coaching people towards their real estate objectives, making sure every clients understands the “Why” behind each step. When I’m not in the office or on the road I have my dad hat on for my 10 month old daughter Zoey and our dog Enzo. My wife and I like surfsides at the ballpark, family walks after work, Eagles tailgates on Sunday, and taking our dog to new hiking spots.

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Matthew Morrow

(2 reviews)

About Matthew

Matt is the Team Lead and co-founder of CORE Team at Realty ONE Group Supreme, specializing in residential, investment, commercial, and wealth-building real estate throughout PA, NJ, and NY. With a background as both an active real estate investor and business owner, Matt brings a different perspective to the industry — helping clients not just buy or sell property, but make informed decisions that support long-term goals and financial growth. Matt and the CORE Team are known for taking a direct, education-first approach. Whether working with first-time buyers, experienced investors, developers, or families searching for a forever home, his philosophy remains the same: provide honest guidance, real-world experience, and treat every client relationship as a long-term partnership rather than a transaction. Over the years, Matt and his team have helped countless clients navigate residential purchases, investment acquisitions, multifamily properties, commercial opportunities, and creative real estate strategies. With firsthand experience in long-term rentals, multifamily investing, value-add projects, development, and portfolio growth, he understands the opportunities—and challenges—that clients face because he lives them personally. Outside of real estate, Matt is a corporate pilot, entrepreneur, real estate educator, and community leader passionate about mentorship and creating opportunities for others. He believes real estate should create freedom, options, and a better future—and he built CORE Team around that philosophy. Live with Vision. Invest with Confidence.

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James Dietrich

(1 review)

About James

I became a Realtor in 2002 and built my business using a relational business model which was effortless given my ability to connect with people. In 2014 I formed a Team and found great satisfaction in training agents and watching their business grow. I later joined Realty ONE Group which gave me the opportunity to truly provide support coaching and create a collaborative work environment for agents to become true professionals. I've served on the local Board of Realtors as VP and as a Director for the Pennsylvania Association of Realtors. I also served on the Executive Council for several years at a previous brokerage. I've earned numerous awards over the years but my most coveted is from a non-profit organization that recognized me for putting their needs before my own. I'm married with two grown children and live in Upper Bucks County. My son followed in my footsteps joining my Team and my daughter has a career in the mortgage business. In my spare time I enjoy golfing and biking. I'm excited to be a part of the ONE Family and supporting my Agents' growth and success as well as continuing the relationships I've built in the community.

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John Wargo

About John

John’s roots run deep in the Lehigh Valley. He was born and raised here. He went to school here, worked and raised a family here, and is now helping those in his community realize the satisfaction of home and investment ownership. John is a Pennsylvania Realtor with Realty One Group Supreme, serving the Greater Lehigh Valley markets. He specializes in educating real estate clients with an emphasis on providing personalized service, strategic planning, and worry-free transactions. Prior to entering real estate, John served his community in Public Safety for over 15 years in Emergency Management, EMS, and HAZMAT response, where he met his business partner, Matt Morrow. Those experiences instilled in him the discipline, problem-solving and servant leadership that have led to his success in real estate in the Lehigh Valley. John’s passion for real estate has propelled him to be an industry leader in client service and education. His clients appreciate John’s flexibility, negotiation and analytic skills and high ethical standards. Clients describe him as resourceful, honest, and inviting. Outside of real estate, John enjoys cooking, woodworking and kayaking. He lives in Bethlehem with his wife, Robin, and their two crazy cats. They also have four awesome adult children and one beautiful granddaughter that is truly a gift from God.

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About us

Not your average agents. Not your average team.... This is the CORE advantage. Most agents focus on transactions. We focus on people, building businesses, creating opportunities, and helping our clients win long after the closing table. Whether you're buying your first home, scaling an investment portfolio, expanding a business, or simply looking for trusted guidance, our approach is different by design. At The CORE Team, clients gain access to a complete real estate ecosystem under one roof: acquisitions, residential and commercial sales, investment guidance, education, and trusted partnerships for mortgage, title, property management, maintenance, and rehabilitation. Instead of handing clients off from one company to another, we’ve built a network designed to simplify the process and create a better experience. We are more than agents — we are investors, entrepreneurs, educators, and problem-solvers who live and breathe real estate every day. Our team combines real-world experience with industry-leading mentorship and resources so clients and agents alike have the support needed to grow, scale, and succeed. We are not here to simply help you complete a transaction. We are here to help you build your future. We are the CORE. Live with Vision. Invest with Confidence. Proudly brokered by Realty ONE Group Supreme

Buyer review

4 days ago

Excellent experience, great realtor

Responsive to questions quickly Organized Knowledgeable Friendly Accommodating Professional.

Seller review

17 days ago

Wendy knew what we wanted!

Her knowledge was right on.

Seller review

18 days ago

An Excellent Experience with Wendy James

We used Wendy James to sell our vacation home in Brigantine and I'd recommend her without hesitation. She was communicative the whole way through, not in an overwhelming way, just consistent. We always knew where things stood. When we had questions, she got back to us quickly and gave us straight answers. What I appreciated most was that she actually listened. She picked up on what mattered to us and worked with that. No pressure, no runaround. She handled things calmly and kept the process moving. On top of being great at her job, she's just a genuinely good person. That made a real difference. Selling a place you've made memories in isn't just a transaction, and she seemed to understand that. If you're buying or selling, call Wendy. She's the real deal.

Buyer review

4 months ago

Incredible.

Wendy is an outstanding realtor who consistently goes above and beyond. She is knowledgeable, responsive, and always keeps your best interests front and center. Her communication is clear and timely, and she makes what could be a stressful process feel smooth and manageable. Wendy’s professionalism, attention to detail, and genuine care truly set’s her apart. We highly recommend her to anyone looking for a reliable and dedicated realtor.

Seller review

4 months ago

Professional and Caring Experience

This was our first time selling a home after living there for a long time. We raised our kids there, enjoyed our grandkids and great grandkids in our home for years. We completely depended on Wendy to take us through the process. There were a lot of sentimental feelings and great memories shared there. Wendy understood all of that and did the work to make it easier. She got it! She’s a great realtor that happens to be our daughter. We got her professional and caring treatment and our house sold in one day. We recommend Wendy highly, knowing you’ll get the same great experience we did.

Seller review

5 months ago

Exceptional Realtor

Working with Wendy was an amazing experience from start to finish. She made the entire process feel easy and stress-free, even during moments that could have been overwhelming. She was always on top of everything, incredibly responsive, and made sure no detail was missed. Her professionalism, knowledge, and dedication truly stood out, and I always felt confident knowing she had everything handled. I couldn’t have asked for a better realtor and would highly recommend her to anyone buying or selling a home.

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