Jack Conway & Co Inc
John Mahan, Jack Conway & Co IncPhone: (508) 331-8339
Email: [email protected]

John Mahan

John Mahan


Throughout his childhood, John Mahan spent summers on Cape Cod at his parents’ home in Dennis Port. His intro to the Cape was, as he puts it, when his parents “carried me down the stairs at Sea Street Beach when I was a week old.” With a lifelong connection to Cape Cod, it seemed only natural for John and his wife, Mary, to move to Harwich – where they still reside – with their two young children in 1996.

Prior to moving to Cape Cod, John lived in the Worcester-Auburn area where he worked for Mass Electric for 10 years and was a member of the International Brotherhood of Utility Workers. When John and his family moved to the Cape, he worked at NSTAR for six years.

John began his career in real estate in 2002 when he joined Team Waystack Realty in Harwich Port. He has been a consistent top producing realtor in the Harwich area for the past 13 years. John’s approachable demeanor, combined with an integral understanding of the Cape Cod residential real estate market, have allowed him to build trusting, long-term relationships with his clients – both sellers and buyers.

Whether you’re considering buying or selling a home on the Cape, why not allow John the opportunity to start building a relationship with you? 

I believe in the value of personal service and I strive daily to ensure that my clients and customers are happy with the services I provide.

If you are a buyer, I can help you get pre-approved for a mortgage so that you will know how much of a home you can afford. You can browse our entire Conway inventory as well as all of the properties for sale in Massachusetts on our newly enhanced Web site, jackconway.com. If you don’t find the home you’re looking for, I will email you new listings that meet your criteria as soon as they arrive on the market. I will help you negotiate an offer to purchase when you find the right house and be at your side all the way to closing.

If you are a seller, as your listing agent, I will offer you total commitment and work toward ensuring a trouble free sales transaction. We will host open houses and market your home through Internet and print advertising to attract a targeted audience of potential buyers. You will also have the benefit of our affiliation with The Leading Real Estate Companies of the World, an international relocation network that brings a huge pool of potential buyers to our company from across the nation and the planet.

Since 1956, Jack Conway Realtor’s reputation for honesty and integrity has stood the test of time. Trust me to handle your real estate needs with care.

Please feel free to contact me whether you are buying, selling or relocating - [email protected]

What Clients Are Saying

John Mahan is a complete professional, very knowledgeable in the real estate industry and a complete pleasure to work with. John is a great guy and fantastic realtor. He went above and beyond the call of duty to help us with the sale of our father's house. My family and I would highly recommend John and Jack Conway in the future. Sincerely, Dave Altavilla 508-282-2700

Laura Altavilla

John knows everything about the area and was tremendously helpful. We were extremely happy with him and with the service he provided. If we hear of someone looking in the area, we would be happy to refer them to John without question.

Ed Andler

John was very helpful to us during the the entire process. He was very patient and thorough with us and gave us confidence - always taking the time to answer our many questions and follow up with calls and text messages. He demonstrated a high level of knowledge and professionalism

Norm Peterson

John Mahan get the grade of an A , very knowledgeable, professional, very fast with communications, overall an outstanding real estate agent. I would highly recommend him to anyone looking for an agent.

Bruno Raberg

John was very professional and prepared every time we met to look at houses, not to mention extremely flexible with his schedule. He was able to answer all of our questions or find the answer very quickly. We trusted his opinion and experience in the market. It was a pleasure working with him.

Dan & Jenn Potts

We would not hesitate in recommending John Mahan to any of our friends, he already has an excellent record in Harwich.

Peter Ryan

We couldn't have been more pleased with the service that John provided. He's made an often-traumatic process go extremely smoothly. Jack Conway is extremely fortunate to have such a knowledgeable employee.

Art Winterhalter

John Mahan went above and beyond. He quickly responded to phone calls and emails. Gave immediate updates on showings, contract offers, completion of contingency items and inspections. We live 2000 miles away and could not have asked for a better person to sell our home. If you want a person with integrity, honesty, a strong work ethic, excellent communication skills, prompt call backs and text messages, experience, stress reliever and an outstanding professional personality with a great sense of humor. We would highly recommend John Mahan.

Tim Kelleher