Mary Ellen OBrien | Real Estate Agent | Long & Foster Skip to main content
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Your Local Real Estate Expert

Mary Ellen is a life-long resident of the Metro DC area and a graduate of the University of Maryland with a Masters Degree in Urban Planning. She brings her clients over 34 years of sales and marketing experience. With over twenty years with Fortune 500 companies as a sales executive, Mary Ellen brings well-honed prospecting, negotiating , marketing, and customer service skills to her client base, both sellers and buyers at Long and Foster Real Estate, Inc. Let her share with you her sales and marketing strategy in selling your home and provide you with an overview of the many complimentary services she offers her clients. She works tirelessly to make sure no stone is unturned in achieving her objectives from beginning to end of the transaction. Specializing in communities in and around Washington, D.C., Chevy Chase, Bethesda, Potomac, Silver Spring and Rockville, Mary Ellen has the expertise to price and position your home for a timely sale, as well as work diligently to maximize the terms of your transaction. Fluent in both Spanish, Mary Ellen is ready to be your real estate advisor and advocate as you move forward in selling or buying your next home.

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Mary Ellen OBrien

Long & Foster One Bethesda, MD - Realty
7373 Wisconsin Avenue, Suite 1700
Bethesda, MD 20814
240-497-1700
301-775-7655
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        Featured Listing

        926 Karlson Avenue
        Hyattsville, MD 20783
        4 Bedrooms , 3 Bathrooms
        Offered at $429,900
        Welcome to your new home! This all-brick detached rambler, nestled on a corner lot, offers both charm and versatility. Boasting a 1-car garage and equipped with solar panels, this home combines convenience and energy efficiency. Inside, discover a spacious layout with 4 bedrooms and 2.5 baths, with the potential to convert back to 5 bedrooms if desired. The spacious kitchen provides ample room for meal prep and gatherings, while the fireplace adds warmth and ambiance to the living space. Step outside to the great-sized yard, perfect for outdoor activities or gardening, and enjoy the tranquility of the enclosed porch. Located in close proximity to Sligo Creek Park, the Washington DC line, shopping, and major roads, this home offers both convenience and access to nature and urban amenities. Don't miss out on this fantastic opportunity to make this versatile rambler your own. Schedule your viewing today and envision the possibilities that await in this desirable location!
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        Testimonials

        "I want to thank you for the wonderfully competent, professional and thorough job you did in selling my home in on Veazey Street in Washington D.C. within seven days and generously over the asking price! With highest regards, Ann "
        - Ann
        "You went the extra mile and we are truly grateful for your business savvy and expertise, your negotiation skills, your practical advice, your sense of humor, and the care you took of us during what was a difficult time as we prepared to move out of the DC area."
        - Traci Grigg
        "Mary Ellen's prospecting skills and knowledge of the local real estate market were great assets in generating interest in the property from the first day on market. On the second day of listing we had five offers and I sold above my asking price. Her vision for marketing the property and her business skills in negotiating the best deal were key reasons for such a successful sale. You will find Mary Ellen an intelligent, amiable hard worker whose tenancy and “can do” attitude in executing on your transaction impressive. "
        - Ellen Caldwell

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        Mary Ellen OBrien