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Meet Johanna Erwin

Johanna Erwin
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Johanna Erwin

Johanna has lived on the Mainline for the past 36 years and brings fourteen years of real estate experience to the team. Her optimism and high energy have been integral to the success of the Cassie Barnes Team. In 2019, she was awarded ‘Sales Team of the Year’ by the National Association of Home Builders of Delaware, Chester & Montgomery County. As a ‘Top of the Rock’ award-winning agent, she will put her master's-level business skills to work to ensure a positive client experience. Johanna is a strong communicator who will work diligently to be your trusted advisor and keep you informed every step of the way! When not selling real estate, she enjoys both teaching yoga as a certified instructor and spending time with her grandchildren.

Contact Details

Email address [email protected]
Primary phone (610) 715-5986
Address 1149 W Lancaster Ave Ste 6 Bryn Mawr PA, 19010
License #RS294758

What Our Clients Say

"Cassie was truly professional. She was very patient, well-informed, and knowledgeable. She was thorough, prompt, and responsive. Cassie gave us excellent advice about buying our new residence and selling our house. We are extremely satisfied with the result and would recommend her without reservation to anyone we know."
"Cassie was truly professional. She was very patient, well-informed, and knowledgeable. She was thorough, prompt, and responsive. Cassie gave us excellent advice about buying our new residence and selling our house. We are extremely satisfied with the result and would recommend her without reservation to anyone we know."
E. Moscow, Wynnewood
"Cassie was wonderful. Knows the market, pricing, making the process almost easy. She helped with not only selling our condo but getting it ready for sale (painters, cleaners, stagers). Therefore, the condo sold in one day above the asking price. My husband and I highly recommend Cassie Barnes."
"Cassie was wonderful. Knows the market, pricing, making the process almost easy. She helped with not only selling our condo but getting it ready for sale (painters, cleaners, stagers). Therefore, the condo sold in one day above the asking price. My husband and I highly recommend Cassie Barnes."
H. Ting, Haverford
"Cassie was excellent in helping us purchase our new home and sell our old one. Additionally, she brings a team of marvelous people and trades contacts to help in all aspects of your purchase and or sale!"
"Cassie was excellent in helping us purchase our new home and sell our old one. Additionally, she brings a team of marvelous people and trades contacts to help in all aspects of your purchase and or sale!"
Homeowner, Haverford
"Cassie was terrific. She is knowledgeable, professional, and extremely helpful in every aspect of the sale of our home. She knows the local market and how to ready your home for showing. She is professional and was able to get the best price for our home. Besides these qualities, she is a great person to work with and went above and beyond to make our move seamless."
"Cassie was terrific. She is knowledgeable, professional, and extremely helpful in every aspect of the sale of our home. She knows the local market and how to ready your home for showing. She is professional and was able to get the best price for our home. Besides these qualities, she is a great person to work with and went above and beyond to make our move seamless."
D.Gross, Haverford
"Cassie was recommended by a friend, as we weren’t in Pennsylvania while looking for a home to buy. Right away, she was able to help us narrow our search by showing us various properties online. For the ones we were interested in, she toured these properties and showed us the house in real time through a video tour. She was our “boots on the ground.” We relied upon her expertise, knowledge and taste. She provided details and timely updates and was able to smoothly and efficiently close a satisfactory deal on an expedited basis. We were very pleased with the process from start to finish. Cassie is responsive to text and phone calls. Total professional."
"Cassie was recommended by a friend, as we weren’t in Pennsylvania while looking for a home to buy. Right away, she was able to help us narrow our search by showing us various properties online. For the ones we were interested in, she toured these properties and showed us the house in real time through a video tour. She was our “boots on the ground.” We relied upon her expertise, knowledge and taste. She provided details and timely updates and was able to smoothly and efficiently close a satisfactory deal on an expedited basis. We were very pleased with the process from start to finish. Cassie is responsive to text and phone calls. Total professional."
Goldstein, Bala Cynwyd
"Fantastic! She has a deep understanding of the Atherton community where we lived, and I am sure her expertise extends to all other regional areas. She did convince us to value the home on what I thought was a bit on the low side, but through her negotiations with buyers, she got a result that exceeded my expectations. So I bow to her superior judgement."
"Fantastic! She has a deep understanding of the Atherton community where we lived, and I am sure her expertise extends to all other regional areas. She did convince us to value the home on what I thought was a bit on the low side, but through her negotiations with buyers, she got a result that exceeded my expectations. So I bow to her superior judgement."
S. Cohen, Haverford
"Buying a house in such a competitive market can be a daunting task and I’m so happy that I chose to work with Cassie Barnes at Berkshire Hathaway. She was extremely personable, knowledgeable, and truly vested in helping me find my first home. Cassie provided invaluable insight about the market, the neighborhoods I was looking at and remained optimistic during the entire process. She was readily available for showings that required quick turnarounds, patiently answered any and all questions and walked me through the process. She expertly handled the contract, making excellent recommendations, and the settlement could not have gone smoothly. It was a pleasure working with Cassie from start to finish and I highly recommend her."
"Buying a house in such a competitive market can be a daunting task and I’m so happy that I chose to work with Cassie Barnes at Berkshire Hathaway. She was extremely personable, knowledgeable, and truly vested in helping me find my first home. Cassie provided invaluable insight about the market, the neighborhoods I was looking at and remained optimistic during the entire process. She was readily available for showings that required quick turnarounds, patiently answered any and all questions and walked me through the process. She expertly handled the contract, making excellent recommendations, and the settlement could not have gone smoothly. It was a pleasure working with Cassie from start to finish and I highly recommend her."
C. Leighton, Newtown Square
"Cassie was able to identify a condominium for me before it was even on the market and followed up by advocating for me with the seller. She was also able to pinpoint the exact type of apartment I would prefer after one phone conversation with me. She is knowledgeable, incredibly responsive, and makes every effort to make the process super easy for her client."
"Cassie was able to identify a condominium for me before it was even on the market and followed up by advocating for me with the seller. She was also able to pinpoint the exact type of apartment I would prefer after one phone conversation with me. She is knowledgeable, incredibly responsive, and makes every effort to make the process super easy for her client."
H.Leibowitz, Haverford
"Cassie and her team member Johanna Erwin did a superb job in handling our recent real estate transactions, and our experiences with them are both as buyers and sellers. They were professional, knowledgeable, competent, and focused. Their integrity and ethics are above reproach. Cassie and Johanna have a strong knowledge of local Main Line area market conditions, and they use advanced and effective marketing strategies ranging from traditional and drone photography, beautiful color brochures and open houses to more contemporary and innovative social media strategies. Their wide experience includes the successful sale of the entire Athertyn at Haverford Reserve condominium community as well as other luxury and mid-range residential properties in the Main Line area. Cassie always goes above and beyond to get the job done, even if it means working late or on a holiday. She has our highest recommendation. Phyllis and Paul Suckow Haverford, Pennsylvania."
"Cassie and her team member Johanna Erwin did a superb job in handling our recent real estate transactions, and our experiences with them are both as buyers and sellers. They were professional, knowledgeable, competent, and focused. Their integrity and ethics are above reproach. Cassie and Johanna have a strong knowledge of local Main Line area market conditions, and they use advanced and effective marketing strategies ranging from traditional and drone photography, beautiful color brochures and open houses to more contemporary and innovative social media strategies. Their wide experience includes the successful sale of the entire Athertyn at Haverford Reserve condominium community as well as other luxury and mid-range residential properties in the Main Line area. Cassie always goes above and beyond to get the job done, even if it means working late or on a holiday. She has our highest recommendation. Phyllis and Paul Suckow Haverford, Pennsylvania."
P. Suckow, Ardmore
"We have bought and sold a number of houses, and worked with a number of real estate professionals, some quite good, but none can hold a candle to Cassie. She is far and away the finest real estate agent with whom we have ever worked, and her skills and knowledge are unsurpassed. Cassie knows everything about the local markets, especially the areas we were considering. Because it had been a while and our familiarity was a bit rusty, Cassie explained and guided us through the process clearly and easily. She invested a great deal of time in us, developed an intimate understanding of our (very particular) requirements, and took a genuine interest in us as people, not merely as clients. She was extraordinarily responsive, including in off hours, and always positive and helpful. She enabled us to get a great deal in this very hot market, making possible a purchase we thought might be out of reach. Cassie also (and always) went far above and beyond the call of duty, acting as our local eyes and ears because we lived in another state, and continuing to assist even after closing with things necessary for our move and transition. Cassie provided impeccable service and is a great person on top of all that. We recommend her most highly to anyone in the market to buy or sell a home. Kudos to Cassie in every way."
"We have bought and sold a number of houses, and worked with a number of real estate professionals, some quite good, but none can hold a candle to Cassie. She is far and away the finest real estate agent with whom we have ever worked, and her skills and knowledge are unsurpassed. Cassie knows everything about the local markets, especially the areas we were considering. Because it had been a while and our familiarity was a bit rusty, Cassie explained and guided us through the process clearly and easily. She invested a great deal of time in us, developed an intimate understanding of our (very particular) requirements, and took a genuine interest in us as people, not merely as clients. She was extraordinarily responsive, including in off hours, and always positive and helpful. She enabled us to get a great deal in this very hot market, making possible a purchase we thought might be out of reach. Cassie also (and always) went far above and beyond the call of duty, acting as our local eyes and ears because we lived in another state, and continuing to assist even after closing with things necessary for our move and transition. Cassie provided impeccable service and is a great person on top of all that. We recommend her most highly to anyone in the market to buy or sell a home. Kudos to Cassie in every way."
S.Goodman, Haverford
"We have had Cassie as our agent twice and will continue to highly recommend her and her team to anyone who is selling or buying a home. Cassie is extremely knowledgeable, responsive, and negotiates in the best interest of her clients. Very helpful in pointing out some of the smallest details to keep in mind while going through the process. Cassie and her team are not only very professional but also very warm, welcoming, and friendly, and always helping in many ways. They are very easy to contact at any time. They made the whole process a non-stressful event. Sincerely, Kathy and Paul Selvaggi"
"We have had Cassie as our agent twice and will continue to highly recommend her and her team to anyone who is selling or buying a home. Cassie is extremely knowledgeable, responsive, and negotiates in the best interest of her clients. Very helpful in pointing out some of the smallest details to keep in mind while going through the process. Cassie and her team are not only very professional but also very warm, welcoming, and friendly, and always helping in many ways. They are very easy to contact at any time. They made the whole process a non-stressful event. Sincerely, Kathy and Paul Selvaggi"
K.

Browse Our

Notable Transactions

  • 414 RADNOR ROAD Sold

    $2,583,000

    414 RADNOR ROAD, WAYNE, PA 19087

    • 4 Beds
    • 3 Baths
    • 3,562 Sq.Ft.
  • 829 BLACK ROCK ROAD Sold

    $1,880,000

    829 BLACK ROCK ROAD, GLADWYNE, PA 19035

    • 4 Beds
    • 5 Baths
    • 3,096 Sq.Ft.
  • 2402 PARKVIEW DRIVE Sold

    $1,700,000

    2402 PARKVIEW DRIVE, HAVERFORD, PA 19041

    • 2 Beds
    • 3 Baths
    • 2,970 Sq.Ft.
  • 6406 PARKVIEW DRIVE Sold

    $1,660,000

    6406 PARKVIEW DRIVE, HAVERFORD, PA 19041

    • 2 Beds
    • 3 Baths
    • 2,807 Sq.Ft.
  • 54 PUGH ROAD Sold

    $1,650,000

    54 PUGH ROAD, WAYNE, PA 19087

    • 5 Beds
    • 5 Baths
    • 4,363 Sq.Ft.
  • 3103 PARKVIEW DRIVE Sold

    $1,450,000

    3103 PARKVIEW DRIVE, HAVERFORD, PA 19041

    • 2 Beds
    • 3 Baths
    • 2,480 Sq.Ft.
  • 4302 PARKVIEW DRIVE Sold

    $1,400,000

    4302 PARKVIEW DRIVE, HAVERFORD, PA 19041

    • 2 Beds
    • 3 Baths
    • 2,117 Sq.Ft.
View All

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