
Herndon
A connected town with neighborhood streets, local restaurants, parks, and easy access to the Dulles technology corridor.
Explore HerndonSterling & Northern Virginia
Andrea Karalyos brings 23 years of market experience, hands-on service, and a deeply local point of view to every buyer and seller.
(703) 282-8811
Meet Andrea
For more than two decades, Andrea Karalyos has helped Northern Virginia clients make confident, well-informed real estate decisions.
Her approach combines close neighborhood knowledge with data-driven pricing, disciplined negotiation, and responsive one-to-one service. Whether you are preparing a longtime home for sale or deciding where to put down roots, Andrea keeps the process clear and grounded.
Fluent in English and Hungarian, she brings a thoughtful, concierge-level experience to buyers, sellers, and relocating families across the region.
Close to home
Each community has its own rhythm, housing patterns, and everyday advantages. Start with a clear local perspective.

A connected town with neighborhood streets, local restaurants, parks, and easy access to the Dulles technology corridor.
Explore Herndon
Wooded neighborhoods, village centers, trails, lakes, and Metro access create one of Northern Virginia's most complete lifestyles.
Explore Reston
Established neighborhoods, Potomac River access, everyday convenience, and a central Loudoun County location.
Explore Sterling
Polished neighborhoods, extensive amenities, strong schools, trails, and Metro access in the heart of eastern Loudoun.
Explore Ashburn
Spacious suburban neighborhoods, convenient shopping, parks, schools, and quick access to Route 28 and Dulles.
Explore Chantilly
Historic streets, independent dining, parks, and established neighborhoods at Loudoun County's civic heart.
Explore LeesburgClient perspective
Coupled with an effervescent personality is a seasoned real estate professional with 15 years of experience matching buyers with their dream home. I engaged Andrea to sell my Herndon townhome. She met with me, discussed my expectations and made recommendations that she advised would result in a sale that would meet my expectations as to selling price and days on market. Andrea exceeded my expectations; she got my asking price with only 2 days on market. She KNOWS how to prep a property and she KNOWS the real estate market in the area. She's the first and only choice for me!
Andrea (Andi) did a fantastic job with my purchase on May 14, 2021. She was recommended by a close friend when we had to purchase a home within 60 days (our lease was ending at end of June). Due to the strong housing market in the area and limited supply, Andi worked closely with us to find a home in a "very short" amount of time. Her knowledge of the local market, local vendors, and experience with the lender we chose made our closing quick and streamlined! She was very responsive to all of our inquiries, working all hours of the day for us (my husband was deployed 8 hours ahead so decisions/paperwork were usually made late in the day). Because of her hard work, we were able to purchase our townhouse in the area we wanted and close in 42 days! We definitely recommend her to anyone looking to purchase a home in the Loudoun County or surrounding area!
Andrea was our realtor when we were moving into the NOVA area last December from Ohio. She was very knowledgeable about the area, and very responsive when we had questions or needed assistance. She was a wonderful resource to have in our corner while we navigated the process.
Buying my first home was made so much easier with Andrea. She is extremely professional and experienced. I highly recommend her!
Andi was fantastic. Very knowledgeable, reliable and great to work with. And she made selling our home a much smoother process than I expected. With her guidance, our home sold in less than a week, for more than we asked for.
Andrea is a highly professional realtor. She helped us throughout our long search for a new home, which took almost a year. She is very patient and has great expertise in the local real estate market. I would highly recommend her if you are searching for a new home in the DMV area.
Plan with context
Use this simple principal-and-interest estimate as a starting point for a conversation with your lender.
Estimated payment
$3,287
principal & interest / month
Loan amount$520,000
Term30 years
Rate6.50%
Estimates only. Contact a lender for exact figures. Taxes, insurance, and association fees are not included.
Start a conversation
Experienced guidance, local knowledge, and a real person you can call. Tell Andrea what you are considering—now or down the road.