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About Mark O'Donnell

Sales Associate - Wellesley Office
75 Central Street, Wellesley, MA 02482
Cell: 617.733.5464

Check out my research by emailing me at


Published author of "Better Real Estate Decisions", a 200 page guidebook for sellers, buyers, and investors. Available on Amazon.

2009 Top Associate Closed Units #1 in Massachusetts

2009 Top Associate Closed Units Wellesley Office

2008 Top Associate Closed Units Wellesley Office

2008 Top Producing Associate Wellesley Office

2007 Top Producing Associate Newton Office

2007 Top Listing Associate Newton Office

2007 Top Sales Associate Closed Units Newton

2012 Top Associate Closed Units Wellesley Office

2015 Top Listing Agent Wellesley Office

2017 Top Listing Agent Wellesley Office

2017 Top Associate Closed Units Wellesley Office

Professional Association

National Association of Realtors

Massachusetts Association of Realtors

Greater Boston Real Estate Board


MIT Sloan School - MS Management

Columbia University - BA Political Science

Professional Specialty

Senior Real Estate Specialist

First time homebuyers

Investment property evaluation

Community Involvement

Columbia University Club of New England

Volunteer - Newton Public Library tutoring English

Community service volunteer

Resident of Historic Chestnut Hill

Bilingual Talents

Conversational Spanish


My real estate practice focuses on matching my clients current living needs with available properties. These properties may either be actively listed on the market or those I know have an interest in selling. For sellers, I help many of my clients downsize from larger homes to ones that more adequately fit their needs. For buyers, I help my clients not to over buy or over invest in properties. This helps my clients in three ways:

1. Economically: By accurately matching their needs with available properties, my clients lower their utility, insurance, and tax expenses.

2. Environmentally: Decreasing utility expenses for my clients benefits the environment by saving fuel used to heat or cool empty rooms.

3. Personally: Homes that do not fit a client's current living needs are hard and cumbersome to manage. They demand time and attention that could be spent building relationships with others, pursuing a hobby of interest, or working in more fulfilling and rewarding activities.


During the past 12 years, I have worked with close to 300 clients assisting them with their real estate needs: selling, buying, and investing. By focusing on the "client" and not the "transaction", I have been able to serve my clients most effectively and diligently.

I am a perpetual student of the real estate business. My recently published book is a compendium of my learnings to date. I enjoy what I do and I enjoy helping other people.

Areas Covered

Greater Boston and outlying suburbs

Niche Marketing

Home owners looking to downsize.

Estate sales of properties.

Investors looking for multifamily properties.

First time home buyers or home owners looking to trade up.

  • "We worked with Mark on the sale of one home and the purchase of another. Both transactions required an exceptional broker to complete effectively. In fact, I do not think we could have sold our home with any broker other than Mark. He was able to manage the various parties to the transaction to ... Dave and Kathy R. (Medfield)

  • "I had been looking on and off for a home when I met Mark at an open house he was hosting at a Canton condo complex he was selling. The condos were new and nice, but they weren't the right fit for me. Mark worked with me to look at property that suited me better. He listened to what I liked and m... Rachael B. (Hingham)

  • "Mark helped us purchase a home when my company relocated me to Boston. We had never lived in the area before. Mark helped us search in various towns, including Newton, Needham, and Wellesley. We found a home in Needham we liked. It was new to the market. Mark evaluated the location and its long... Ruben and Somarly A. (Needham)

  • "Mark helped us sell our house in Newton. It was a beautiful home on one of the best streets in town, but the market had just turned down and the industry was going through a transition. Hence the sale was a challenge. Mark put together an excellent marketing package with his firm and gave us the... John and Consuelo P. (Newton)

  • "After looking for a new home for many months, both on my own and with other agents, I was starting to think I'd never find the right place for my current needs. A colleague who had worked with Mark to buy her home suggested I contact him to give my search a boost. I had narrowed my search to Newto... Emily H. (Natick)

  • "Mark has listed, sold, and rented over 50 properties for me since I first met him in 2006. These properties have included condos and single family homes as well as mixed use and multi-family properties. Overall, he has done a great job. His work ethic is good. He is honest, knowledgeable, thorou... John M. (Massachusetts)

  • "We wanted to move closer to Boston and engaged Mark to help us find a home. He set up a systematic search process for us. We looked at homes throughout Metro West Boston and identified one in Southborough with Mark's help. It was a complicated transaction that required multiple inspections and a... Brendan and Mary Beth Mahoney (Southborough)

  • "When we relocated to the Boston area, Mark and his firm helped us find a rental property in Brookline, close to our work. It was a convenient location but, as our family grew, we knew we needed a house. Mark coordinated our search for us in Newton and Brookline as we requested but suggested us to ... Aldo and Tiziana R. (Needham)

  • "We were renting in Chestnut Hill when we met Mark. At the time, we were expecting an addition to our family and wanted to invest in a property nearby that provided us with more space. Mark coordinated our search and helped us identify a two family home in West Roxbury that suited our needs. The ... Ari W. (West Roxbury)

  • "Mark helped us move from Somerville to Framingham. He lined up several property tours for us in towns of interest and accompanied us as we visited each home. His experience and knowledge helped us make the right buying decision. Once we had bought our new home, Mark sold our condo for us in Somervi... Seth & Jessica S. (Framingham / Somerville)

  • "We began our search looking in several Metro-West towns. Mark helped us narrow and refine our search, given the criteria we gave him. Newton emerged as a destination city for us compared to the other markets we were evaluating. As a Newton resident, Mark helped us understand the different Newton m... Newton Buyer (Newton)

  • "When we decided to make a move out of our one bedroom condo, we contacted William Raveis Real Estate since they had sold units in the area. The firm recommended Mark. Mark helped us present our unit in a very favorable light vs. other comparable units on the market. He hired a floor plan professio... Scott and Sarah Zerneri (Brighton, MA)

  • Mark is a five star real estate agent who knows the greater Boston area extremely well and helped my wife and I perfectly to get a great home for a good price in a a highly desired neighborhood in Boston. Mark guided us through the whole process and made sure that we always felt confident with our ... Alex Wriedt (South Boston)

  • Our experience with Mark was consistent from start to finish. He is ultimately who you would want on your side. His manners, professionalism and approachability made our home selling process very smooth and pleasant. He showed up with data about pricing, timing, market conditions, etc. and ushe... Ash Sirivallop (Natick)

  • Mark recently helped us sell our family home which had been in our family for almost 100 years. Situated on a scenic road in beautiful South Natick, our home was built around 1880 on just over 2.5 acres of land. The sale was difficult since the house was older and in need of some updates to make i... Liz Maisey (South Natick)

  • Mark managed the entire process from start to finish and exceeded our expectations. He met with us to outline the process. He began to send us listings based on our likes. We saw one. We visited the Open House, and we knew that it was the one. He suggested an offer that he thought would get the dea... Ben Rubeor (Walpole)

  • "Mark helped us find and purchase a new home in January 2020. As first time home buyers, we were initially nervous about taking this next big step in our lives, but Mark provided friendly and reliable guidance, simplifying what otherwise could be a stressful and harrowing process. He first met us fo... Maggie Keefe (Millis, MA)

  • Mark O'Donnell sent a postcard, offering a complimentary evaluation of my home in Newton Centre, MA 02459. Several days after he came, he brought a detailed report, showing nine "comps" (comparable homes), in my neighborhood, which sold in the last six months. His analysis was detailed and precise... Deborah Robinson (Newton)

  • Mark was very responsive, knowledgeable, and overall amazing! His expertise about the market and the buying process was beyond helpful and put us at ease as first time home buyers. Elizabeth McNamara (Medway, MA)

  • Friendly and knowledgeable. We eventually found the right house for a good price. He is always responsive to email/text and knows the good areas of Boston and the surrounding areas. Thanks for the help! Joseph Iacoviello (Norwood, MA)

  • Mark is very professional and knowledgeable. He is always available to answer any questions or concerns. I highly recommend Mark. His experience in real estate is exceptional. Benjamin Aguirre (Natick, MA)

  • Mark is very knowledgeable and made the entire process very smooth for us. He has extensive experience in real estate and is very honest. Very responsive to any questions or concerns we had. He always answered emails and calls very promptly. I highly recommend his services for any seller or buyer. H... Helen Henkle Aguirre (Framingham, MA)

  • We reached out to Mark back in January at the start of our home buying process. He provided us with key resource materials prior to the house hunt which helped us prepare for the strenuous process of house hunting & purchasing! We visited several open houses and were still unsure of the area. Mark w... Carlton Vaz

  • Mark helped us in our selling/buying process which was a huge success. We ended up with a house that we love, selling our house quickly and at a very good price. At all times he did a good job managing expectations, conveying our position and needs. Thanks, Mark! Santiago Silveyra (Holliston, MA)

  • Mark is super helpful and knowledgeable. Very lucky to have him as our agent who helped us win our dream house from a group of competitive bidders. He is responsive and has always been around throughout the closing process. Very pleasant experience to work with him! Sherry (Lexington, MA)

  • Our experience with Mark was very good. He was introduced by a good colleague of mine. My wife and I were specifically looking at Lexington and Newton because we were looking for good school districts and my wife and I were both new home buyers. Mark was very patient with us to walk through the spec... Vincent (Lexington, MA)

  • Mark did an excellent job. He was professional, thoughtful, and successful. I will recommend him in future.

  • Mark O'Donnell was always available to help us talk through difficult decisions throughout the process. His expertise was greatly appreciated. (FRANKLIN, MA)

  • Mark is conscientious, courteous and practical. His advice about how to price and list our house was right on the money. James O'Leary (Amesbury, MA)

  • Mark O'Donnell is the kind of agent we look for to buy or sell. He is approachable and exhibits high business acumen and efficacy. His communication is proactive and well-understood with zero ambiguity. His experience and background in the industry speaks for itself, combining with his personalit... Athene Sirivallop (Natck, MA)

  • Working with our agent was fantastic. His knowledge and willingness to meet anywhere anytime was awesome. He relieved many of the pressures of home buying with his easy going and professional approach. Philip Derendorf (ANDOVERMadbury, MA)

  • Mark was very helpful in helping me purchase my home. He was excellent about finding houses in the neighborhoods I was looking at as well as suggesting other areas I may not have considered, and was very helpful in guiding me through the open houses until I found my house. His insight and expertis... James Norton (West Roxbury, MA)

  • Mark was exceptional. We listed the house just as COVID-19 hit and he was extremely responsive to the care and health concerns we had for showing the house. He rigorously screened buyers for only viable candidates, was extremely careful to communicate visits and always paid attention to see CDC guid... Thomas Haferd (Medway, MA)

  • We bought and sold our home with William Raveis. They were very professional, knowledgeable and very helpful every step of the way. They sold our home above asking with 9 offers to choose from. When we bought our home, the agent was extremely helpful giving us market analysis of the property as well... Carlton Vaz (Stoughton, MA)

  • Condo was put on the marked. We had about 10 open houses. I receive one offer, it fell through because the man had a cat. I received a second offer 7 weeks after it was listed. There was a special assessment on the property that complicated the sales process. Mark did a good job explaining it to pot... Kristina Roddy (Arlington, MA)

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