Your Local 

Real Estate Expert

Find your dream home with our powerful property search tool!

REALTOR®

Mary Keller

Meet Mary Keller, a lifelong resident of Western Pennsylvania. Born and raised in Tarentum, Mary has a deep understanding of the local real estate market. After spending the early years of her career in Pittsburgh's Shadyside, Morningside, and Cheswick neighborhoods, she and her husband Bill moved to Lower Burrell where they raised their two boys. They later relocated to Sarver before spending a few years in Sarasota, FL and finally settling in Oakmont, where they have lived for the past decade.

Send a message
mary-headshot

Before becoming a Realtor®, Mary honed her skills in healthcare, starting as a Radiologic Technologist and eventually becoming Manager of Radiology at Shadyside Hospital. She then transitioned into the Healthcare Information System arena where she excelled in managing resources, projects, and client relationships. These experiences have provided her with a strong foundation for her successful transition to real estate. With a keen eye for detail and a commitment to delivering results, Mary is experienced in meeting client expectations, communicating effectively, and making the buying or selling process as seamless as possible. Her expertise in technology also allows her to effectively market homes in today's digital environment.

As a member of the Realtors® Association of Metropolitan Pittsburgh (RAMP), Mary is committed to upholding the highest standards of professionalism and integrity in the industry. She is a proud graduate of Highlands High School and holds an associate degree in Science from Penn State University, as well as a bachelor's degree from LaRoche College. Mary's training as a Radiologic Technologist was completed at Shadyside Hospital.

Mary is proud to be affiliated with the John Marzullo Group, a top-performing real estate team with over 25 million dollars in sales and an impressive record of selling over 125 homes each year. With a drive to help her clients achieve their real estate goals, Mary will work tirelessly to ensure a smooth and successful transaction. Contact Mary today to learn how she can assist you in reaching your real estate dreams.

Discover hidden local gems

Communities

View all

In the words of my clients

Success Stories

"Shelby Noll was incredible to work with as I bought my first home. She was always on top of every detail, quick to respond, and made the entire process feel manageable and stress-free. Shelby is friendly, knowledgeable, and truly cares about her clie
"Working with Burton Frey was an outstanding experience from start to finish. His patience throughout the entire process was truly appreciated, especially during moments that required extra explanation or reassurance. Burton took the time to educate m
"We have been working with Eddie McDonough and we couldn’t have asked for a better realtor. He took the time to understand our needs, communicated clearly throughout the entire process, and was both professional and easy to work with. He also helped i
"I’m incredibly grateful that Angela Dielo was our realtor through Compass. As first-time homebuyers, we had a lot to learn, and Angela made the entire process easy to understand and far less intimidating. She took the time to truly get to know us and
read all

Is it a good time to sell?

How Much is your home really worth?

Get your home value

Explore Our

Exclusive Listings

View all
No listings found.

Ready to take

The next step?

Not sure if now's the right time to buy or sell? Need a reliable contractor? I would love to get to know more about you and your needs!