Contact Our Team

We'd love to hear from you. We are responsive and hungry to answer your questions!

Our general office number is (207) 824-4663 or (207) 824-HOME

Designated Broker | REALTOR®

Cassie fosters long-term relationships with her clients who oftentimes turn out to become great friends. This people-centered approach to business has earned Cassie 5 star reviews across the board and has led her to become one of Oxford County’s Top 4 Productive agents in 2019 and 2020.

She has handled hundreds of transactions over the past 7 years and this experience gives her a deep understanding of the vacation home market and what level of service clients in Western Maine truly need for a stress-free transaction.

Cassie was born and raised in Bethel and has a deep love for the area. She grew up skiing the slopes of Sunday River, attended Gould Academy, and returned home from life in Bozeman to raise her family in Bethel.  She is passionate about giving back to the local community and in addition to designating a portion of every commission to an area non-profit, Cassie volunteers for the Bryant Pond 4H Learning Center and the Mahoosuc Land Trust.

Outside of work, Cassie is probably outdoors playing and exploring with her two kids Anna and Ronan, and with her husband, Mark.

Broker | Life Support

Amber loves checklists. In fact, she lives for them. Her head doesn’t hit the pillow at night until every box on her day’s list has earned its checkmark. In an industry that’s always changing and deals that are always different, the high level of organization that Amber provides is essential to our sales.

A lifelong Mainer, Amber found her true love in Bethel in 2010 and has lived here ever since. She can relate to the wonderful attributes the town has to offer as Amber and her husband are raising their two-year-old son Jensen and one-year old Boxer pup just outside Bethel Village.

Amber will most likely be the one to greet you at the office, she loves taking care of people and can’t wait to meet you in person. When she’s not at work, Amber is enjoying time with her family.

Vacation Rental Manager | Showing Agent

Mark is happiest when he is working directly with a property owner, rental guest, or an employee. He is so committed to problem solving, improving the current situation, and planning for the future that he often takes notes during or after an important conversation so that he keeps the client’s needs top of mind as the day goes on. 

With a strong background in trip planning and leading, Mark has become the guy in the group that puts everyone else first. Whether he’s leading you from Mexico to Canada along the Pacific Crest Trail or guiding you through the process of owning your first rental house, you can be sure that Mark will be happy only when you are thrilled.

Mark is Cassie’s husband so that tells you that he is a patient and easy-going guy.

Associate Broker

If there is anyone in this world that understands and values the importance of customer service, it is Lindsay Gagnon. Prior to earning her associate broker license, Lindsay worked at the local branch of Northeast Bank in Bethel where she spent 9 years catering to her customers' needs and building her highly professional and friendly reputation which she maintains today in the real estate industry.

Those who know Lindsay on a personal level can attest to the fact that the energetic, bubbly person you see in public is the same one you get at home. This character consistency goes a long way in overcoming tough curveballs during a real estate transaction. When you need an advisor to guide you and a friend to support you, Lindsay is there.

Lindsay’s passions beyond her career include spending time around a campfire with friends, time with family at her camp on Richardson Lake, and downtime at home with her husband, Ryan, and their two handsome boys, Lane and Bryson. Lindsay understands that family is everything and is grateful that hers has been here for generations.

Associate Broker

Louise Rice has lived in Bethel for her whole life and sees no reason to leave. Everything about the area; the people, the places, and the scenic landscape, keep her heart full. 

Louise works directly with The Williamsons and provides them with full time sales and rental support. Her prior work experience at a local attorney’s office makes her an asset to the team. Louise is a wealth of knowledge when it comes to the history of area properties and to the rules and regulations of the industry. 

With two young grandchildren, Louise and her husband, Willie, can usually be found visiting with them or with any of their three children. 

Associate Broker | Broker

Julia and Gary Williamson are lifelong residents of the Bethel area and their family has been meeting the needs of real estate clients for generations. The Williamsons are the former owners of Four Seasons Realty in Bethel which was founded by Julia’s grandfather, Gordon Brown, in 1994. 

The Williamsons continue to practice real estate sales with Cassie Mason Real Estate and they independently own and operate Four Seasons Vacation Rentals which serves the greater Sunday River area. 

When they are not in the office, Gary and Julia are likely on the baseball field, at their camp on North Pond, or enjoying dinner (likely venison) with their four sons, one daughter-in-law, and extended family members.

Marketing Director & Associate Broker

Vicki is an Associate Broker as well as our Marketing Director; focusing on keeping the website and social media content fresh.

As a third-generation Lowell in the small town of Bethel, Vicki brings with her an appreciation for customer service. This is an attribute that she has been raised on first-hand for her entire life. 


Vicki grew up at her family’s business; always watching her parents and their employees prioritize customers' needs. She has witnessed exactly what it takes to be successful in the business world. 

With a degree in business from St. Joseph's College and real-life experience in the workforce, Vicki is an agent armed with discipline and knowledge. She listens closely to her clients' needs and works tirelessly to find them the exact property or solution that is best for them. This dependability makes Vicki an advisor you can trust. 

Vicki spends her personal time riding and caring for her horses. She and her partner, Josh, are currently building a home in Andover. 

Sales Agent

Isabella is a licensed Sales Agent at Cassie Mason Real Estate.

She grew up in Hanover, Maine, and graduated from Gould Academy in 2015. She then attended James Madison University where she earned a B.B.A. in Marketing with a concentration in Digital Marketing.

In her free time, you can find her on Worthley Pond, hiking around the area, and serving up flatbreads and ravioli in her family-owned food truck.

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