Kathe Barge

Kathe Barge

Associate Broker / REALTOR® at Piatt Sotheby's International Realty
PA Associate Broker: AB065129
  •   5   (54 reviews)

About Kathe

Kathe Barge is an Associate Broker with Piatt Sotheby’s International Realty and one of Sewickley, Pennsylvania’s most experienced residential real estate professionals. With 25+ years of experience, Kathe has completed 690+ buyer and seller representations totaling more than $470 million in represented sales, including 580+ transactions in her hometown of Sewickley and 125+ $1 million-plus representations. A graduate of Duke University School of Law with High Honors and a Pennsylvania-licensed attorney, Kathe practiced tax, trusts and estates law in Washington, D.C. before entering real estate. Her legal training and decades of transaction experience inform a strategic, analytical approach to negotiations, contracts and complex real estate decisions. Kathe specializes in Sewickley real estate, luxury and historic homes, seller and buyer representation, relocation, estates, move-up buyers and downsizing. She has completed 265+ historic-home representations and brings personal experience owning and renovating historic Sewickley homes. Sellers benefit from Kathe’s hands-on guidance on property preparation, positioning and customized marketing, supported by the global reach of Sotheby’s International Realty. Buyers benefit from her deep knowledge of the Sewickley market, extensive local network, renovation experience and ability to identify both listed and potential off-market opportunities. Kathe’s business is 100% referral-based, and she does not operate a team. Every client works directly with Kathe throughout the transaction.

Kathe's reviews

  5  
Kathe has 54 reviewsacross 13 different locations, showing 6.
Review Kathe
20 days ago
Your Trusted Sewickley Real Estate Expert

Kathe was wonderful to work with throughout the entire home-buying process. From the beginning, we always felt like she was truly in our corner. She gave us all the information we needed to make good decisions, was incredibly honest and transparent with us, and never made us feel pressured in any direction. We went through two difficult negotiation processes, and Kathe was excellent through both of them. She helped us understand our options, advocated for us when it mattered, and ultimately helped guide us to the right outcome each time. Having her experience and judgment in those moments made a huge difference. We would absolutely recommend Kathe to anyone looking for a realtor, especially in the Sewickley area. She knows the area and the local market extremely well, and that knowledge was invaluable throughout the process. We’re very grateful we had her representing us and would happily work with her again.

about 1 month ago
The Realtor You Want by Your Side

We couldn’t have asked for a better realtor than Kathe. She helped us purchase our first home when we moved to Pittsburgh, and six years later, she helped us sell it as we moved closer to family. Kathe was incredibly knowledgeable, responsive, and invested in making the process as smooth as possible. She gave us sound advice on preparing the house, and it paid off. We had multiple offers right off the bat and ended up selling over asking! Kathe helped us find this home during such an important time in our lives and she helped us navigate selling it when it was time for our next chapter. We are so grateful for everything she did for our family. We highly recommend Kathe to anyone looking for a realtor who is knowledgeable, trustworthy, and truly cares about her clients!

3 months ago
We recently sold our home through the services of Kathe Barge, Piatt /Sotheby’s International Realt

We recently sold our home through the services of Kathe Barge, Piatt /Sotheby’s International Realty, Sewickley, PA. She was recommended to us by a personal friend who had used her services previously. We were quite satisfied with the process and the outcome. The factors that we valued in Kathe as our representative include: • She has significant experience in real estate and in the local area • She offered contacts for auxiliary service providers for preparation of the property, etc. • She kept us on schedule. • She gave us personal attention and followed through to the end of the process. • We had a successful sale.

3 months ago
Thoughtful Guidance Through My First Home Purchase

Kathe worked tirelessly with me on a months long journey to find my first house. She provided excellent research, resources, and advice throughout the process. I don't think I would have ended up in the right house without Kathe. Thank you so much!

3 months ago
Thoughtful Strategy. Outstanding Results.

We selected Kathe after a series of ‘capability and fit’ meetings with a shortlist of very talented realtors in the Sewickley market. From the jump, she differentiated herself through her market mastery, analytical capabilities and work ethic. Her value-add extended into all realms of our process, lending her time and talent - and her considerable network of contacts - to help us plan and execute every phase of work. But it was in moments of complexity and uncertainty that Kathe’s true super powers were revealed. In these instances, she exhibited a remarkable clarity of thought and action, acknowledging our ‘emotion’ while moving us forward toward a productive set of indicated actions that ultimately resulted in a successful transaction. Our journey with Kathe Barge was a master class in IQ and EQ. We recommend her without hesitation.

3 months ago
Legal Expertise That Makes a Difference

When complexities arise, she is very good at getting the job done. Her background as a lawyer comes in handy. We love our house and would definitely recommend working with Kathe!

Show all 54 reviews

Kathe's properties

Kathe has sold 21 properties in the last 12 months, showing 4, sorted by most recent activity

SoldJun 25, 2026
$415,000
136 Kenney Dr
Allegheny County PA 15143
3
3
2
Single-Family
Listing courtesy of Piatt Sotheby's International Realty
SoldJun 9, 2026
$585,000
226 Foxwood Rd
Carnot-Moon PA 15108
4
4
2
Single-Family
Listing courtesy of Piatt Sotheby's International Realty and HOWARD HANNA REAL ESTATE SERVICES
SoldJun 8, 2026
$610,000
700 Bridle Path Drive
Allegheny County PA 15090
3
3
3
Single-Family
Listing courtesy of Piatt Sotheby's International Realty and COMPASS PENNSYLVANIA, LLC
SoldJun 2, 2026
$552,500
134 Meredith Drive
Adams Township PA 16046
3
3
6
Single-Family
Listing courtesy of Piatt Sotheby's International Realty and PIATT SOTHEBY'S INTERNATIONAL REALTY
Show all 21 properties
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