Sean O'Brien
Sean O'Brien
o: 709-790-1850
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About Me

* Top 8% of all Century 21 Agents Nationally *

Sean O’Brien has years of professional experience, working with a variety of clients in order to meet and exceed their goals. With a unique marketing, sales and analytics background, he brings a diverse skill set to each of his clients. Known for his analytical mind, running numbers and scenarios for all decisions, he does his research and understands the market in a way that sets him apart. A non-pushy sales pro who continually exceeded his sales quota, Sean believes that honesty, attention to detail and commitment to a shared vision are most important when helping someone make the biggest purchase of their life. Sean develops a relationship with his clients which helps him understand his client’s needs and goals in their search for their perfect home. 

Sean graduated Magna Cum Laude from Virginia Tech, with a degree in Marketing and minor in Sociology. He is an avid sports enthusiast, and family man who enjoys reading and building things in his spare time. He resides in Brambleton, Virginia with his wife, Erica, three kids and two dogs.

Customer Ratings

Sean O'Brien has been rated by 15 customers


“Sean O'Brien was great to work with - always available, patient, and extremely approachable. My family and I had a bit of trepidation concerning the purchase of a new home (and sale of our existing one) during COVID-19, but Sean made it so that the entire process ran smoothly (and safely). We would work with Sean again in a heartbeat.”
Tim Schleining, Round Hill (Buyer)
“I had great experience working with Sean Obrien in my house purchasing process. I ran into him "by accident" on Zillow, and I happened to see an open house that I liked. He helped me submitted an offer and won the bid against multiple offers. He assisted professionally in every step thereafter until closing with great patience. He is friendly, responsive, confident and knowledgeable. Definitely will recommend him to anyone. ”
Kaiyan Jia in Chantilly VA (Buyer)
“We were not wanting to be inundated with too many details of the campaign. We just know, after Sean O’Brien suggested some improvements, and they were done (with his guidance) we got terrific results! Better than we ever expected. There ended up being some unexpected negotiations and he handled them very well. Sean O’Brien really could not have been better. There were emotions involved with this move, plus we had very little real estate knowledge. He was patient and adjusted his schedule to make things easier for us. He communicated in a variety of ways, by phone, Twitter, email, and always knew which was the right way. He also responded to any of our own communications swiftly. We had moved about an hour away and Sean made it so we did not have to go back and forth too often. He took our emotions into account at every turn. His knowledge and helpfulness were very important to us. We believe this sale required a great deal of time, flexibility, and care. The house needed work and we needed guidance. With the pandemic interfering at some point, Sean guided us all the way to settlement like the pro we were told he was. I will be recommending Sean O’Brien, without hesitation, to anyone in the Northern Virginia - D.C. - Maryland area. ”
Danny Sanders, Bethesda (Seller)
“Our experience with Sean was exceptional! We wanted a total "turnkey" real estate agent, and Sean did it with ease and really took all the worry and legwork out of a complex Buy/Sell transaction. Sean knew the local market really well, and brought some really helpful data to assist. He helped us list and sell at exactly the right price right time and received full ask in 4 days, amazing by any standard. We would without hesitation recommend Sean to friends and family! Thanks Sean!”
Matt & Rebecca Adams - Ashburn, VA (Seller)
“I’ve bought and sold several houses and I had more confidence that Sean had my best interest in mind than any other realtor I’ve worked with. ”
Brian B Ashburn, A (Seller)
“Sean O'Brien was absolutely fantastic to work with. He is easy to talk to, professional, responsible, and well versed in all the local nuances of Fairfax and Loudoun Counties. For the sale of my house, he represented me (the seller) as well as the buyer, and he pulled off the dual representation with consummate professionalism, protecting both sides' information and helping negotiate a deal that made everyone happy. The timeline on my purchase and sale was very short, and he was available at all times to facilitate the transaction and help us find a place that we love and answer our many questions about the house, the financing, and all sorts of other angles. I highly recommend him to anyone interested in buying or selling their house in the northern Virginia area. ”
Abbie Baker, Fairfax, VA (Buyer)
“Sean O'Brien was on top of everything and took care of the inspection as well as ensuring I understood exactly what was going on every step of the way. Sean O'Brien was always available to answer my questions and followed up on any outstanding items. He checked with me regularly to see if I needed anything and make sure everything was going well on my end. I have recommended Sean O'Brien to several others already. Sean O'Brien made my home purchase a huge success.”
Kristen Carter, Bristow, VA (Buyer)
“Sean O'Brien provided an easy, hassle-free, and successful sales experience. He more than met my expectations. His guidance and knowledge helped me to sell my condo in less than one week! No time was a bad time for a call, an email, or a text. It was great to have an agent who was always available, responsive, and genuinely interested in my customer experience. I would recommend Sean for any real estate need. He will be go to if ever I want to buy or sell again!”
Laura W., Herndon, Virginia (Seller)
“Sean was terrific. He advised on all aspects of the sale, including staging my condo. He negotiated and obtained multiple offers. He listened to what I needed and secured the best result. My sales experience was seamless. Sean was a great broker and advocate. Sean is a very dedicated broker. He helped me through the process and was always available. He worked tirelessly on my behalf throughout the entire process.”
Mark Fiekers, Ashburn, VA (Seller)
“I met with Sean and he demonstrated clear knowledge of the market, enthusiasm and energy. He was an easy choice. Sean was incredibly well organized and attentive. He followed up with me regularly throughout the process and attended all meetings. Sean is a great agent - he has a lot of insight and knowledge about the market and is a terrific advocate as well. I would recommend Sean to any friends, purchasing or selling a home.”
Mark Fiekers, Ashburn, VA (Buyer)
“Sean was a consummate professional. With so many moving pieces in a housing transaction it is important to work with someone who immediately returns messages and effectively communicates. Sean Obrien is one of these people. Our purchase went smoothly due to Sean's professional contacts and knowledge which are both expansive. Being first time buyers, we had several questions and Sean remained patient with us while addressing all of our concerns. I would highly recommend Sean if you are a first time homebuyer. ”
Matt and Kirsten Ashburn (Buyer)
“Sean was on top of every aspect of the sale and kept us informed every step of the way. He knew the timeframe of all the elements of the pending sale/repairs/negotiations. His attention to every detail was above anything we could have expected.”
Lyn & Myron Hanke (Seller)


Sold By Sean O'Brien

Represented Buyer