Meet Michala

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JoEllen Musselman

Director of Operations
PA Sales Agent | REALTOR®

Meet JoEllen

Congratulations to Joellen for being named by @moving.philly one of the 2025 Agents on the Rise!

Now in her tenth year of real estate—and having guided or overseen more than 700 home purchases and sales—JoEllen Musselman leads the Michala Costello Team’s sales division with equal parts composure and drive. Drawing on a career path that began in operations, she pairs a meticulous eye for detail and process with a genuine love of mentoring new agents, fostering the collaborative culture that sets this team apart.

Clients appreciate JoEllen’s level-headed, calming presence during what is often a stressful milestone. She anticipates challenges before they surface, keeps negotiations moving forward, and communicates with clarity so buyers and sellers feel supported every step of the way.

Away from the closing table, JoEllen has called Philadelphia’s Chestnut Hill/Mt. Airy neighborhoods home since 2011. She and her husband of 25 years have three grown children, plus three former international students who became family, and two lovable pups named Livie & Mocha Sweetums.

A lifelong reader, JoEllen is happiest combing through flea markets for vintage treasures, planning spur-of-the-moment weekend getaways—especially to New York City and Washington, D.C.—and hosting friends for relaxed, laughter-filled gatherings. She is also passionate about social-justice initiatives, bringing the same spirit of service she shows her clients to the broader community.

Mount Airy

Chestnut Hill

Germantown

Roxborough

East Falls

Manayunk

Springfield Township

South Philly

Flourtown

Cheltenham Township

Ambler

JoEllen's Favorites

Favorite Restaurant

Bar Lizette

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Favorite Happy Hour

McMenamins (Mt Airy)

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Favorite Musem

Philadelphia Museum of Art

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Favorite Park

Wissahickon Trails

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Happy Clients.

Joellen was amazing and made my home buying experience great. She was knowledgeable, honest, and proactive the whole time.

Elliot

JoEllen is top class! She went above and beyond to find listings that matched my preferences and budget, and she always offered thoughtful perspective during in-person showings. Her insights were incredibly valuable - especially as a first-time homebuyer. I’m so thankful for her guidance and support throughout the process. I highly recommend working with her!

Jobi

I had a great experience with Michala's team! JoEllen was so patient and understanding. She has a deep knowledge of the area, and she really listened to us and understood what we needed. I would recommend this team to anyone. They are very easy to work with.

Nancy S.

Our experience with the Costello group was amazing! JoEllen helped us to find exactly what we were looking for! She is professional and very knowledgeable. She never disappointed us! They helped us buying 3 properties in the city of Philadelphia. The process was so smooth and we highly recommend her to everyone!

Home Buyer

We recommend Michala and her team 100%. We were given Michala’s name by several neighbors who had also had wonderful experiences with her, and we are so grateful! She helped us with a difficult transition move at an emotional time in our lives, and we ended up with a great success and a sense of completion that was very important - the team helped us in this every step of the way with advice, paperwork, logistics, strategy and more. Michala understood our neighborhood perfectly. We chose the Private Exclusive process and were extremely pleased with the control, pace and privacy that it gave us. Our timelines changed a few times and the team met each one with calm and grace, reassuring us as we went. Everyone was highly professional, respectful, caring, and knowledgeable. Things went very smoothly and quickly. We were satisfied with the negotiations, the inspection, and the final steps as well. Michala’s team is an excellent choice; we will always be thankful for having her lead this experience for us.

Home Seller

My husband and I worked with JoEllen and had an amazing experience. We were first time home buyers and she explained each step of the process along the way to make sure we understood everything. She made sure she was available for any questions we had so we could make the best decisions. She was extremely flexible with us for scheduling and we felt cared for throughout the entire experience. We were able to find a home that was perfect for us AND she was able to help our close family find their first home within a few months of us. We can not sing JoEllens’s praises enough!

Elise

Michala, JoEllen & staff went above & beyond with the sale of my mother's home. They were professional, know the market & always available for questions. It was a pleasure working with them. I highly recommend.

Home Seller