Call me: 240-603-3965
  • UNDER CONTRACT! Willowbrook Estates in Potomac

    11204 Old Post Rd. Potomac Old Post 3D tour Renovated and stylish colonial on a gorgeous, flat, half an acre lot. Rich, warm, inviting, this home offers a recent kitchen renovation, …

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  • Under Contract! Gorgeous Sycamore Acres in Rockville

    This amazing package went UNDER CONTRACT in 3 DAYS!  Serene, one-acre lot located in Sycamore Acres! Customize this one level home with your own vision, build up or build out …

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  • Just Sold- Bells Mill Estates Luxury TH- Potomac

    8404 Bells Ridge Terrace SOLD IN 3 DAYS! Luxury Stanley Martin Townhome in sought after Bells Mill Estates- Potomac Regency neighborhood!  Rarely listed in the neighborhood, this 3 bedroom townhome offers …

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  • JUST SOLD- Open Concept Arnold MD

    Gorgeous DR Horton open concept single family home near water in Canterbury neighborhood, Arnold MD! Light, bright home with white kitchen and open layout. Triple crown molding, paneled walls, and …

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  • JUST SOLD – HOT HOT HOT in Downtown Bethesda

    4801 Fairmont Ave. Convenience abounds in this almost 700 square foot with 1 bedroom, 1 bath, granite and SS kitchen, open style living with in-unit washer and dryer, gorgeous hardwood …

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  • Woodley Gardens/West End- JUST SOLD

    Rockville charmer, 5 bedroom, 3 bath split level. Walking distance to Rockville Town Center and Metro! updated kitchen, gorgeous family room and hearth with walk out patio.

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Buying Your New Home

You need someone who knows this area inside and out! I am a native Washingtonian and have listed and sold 100’s of homes over the last 15 years. I  can …

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Home Evaluation

What’s your home or property really worth? Accurately pricing real estate is my job! Let me do a market analysis for your property. You should know exactly what it’s worth before making such an important decision to sell.

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Selling Your Home

When it’s time to move, you need someone who will advertise and tirelessly market your home, show to prospective buyers, negotiate the purchase contract, arrange financing, oversee the inspections, handle …

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Home Selling Techniques

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My Clients Say

  • Mary is extremely knowledgeable about real estate in the DC metropolitan area. She knows just how and where to market and was very successful in selling my condo so quickly! I would highly recommend her for any of your real estate needs. She’s also just great to talk to! February 21, 2018

    Alayna Sye

  • Mary was fantastic and helped me sell my 11-year-old condo in just a few weeks. She got me the price I needed and helped me get it ready to sell at a minimal cost. She handled everything for me and negotiated a great price for me when the buyer’s tried to offer me less. She knew exactly what my place was worth and made sure I go that amount. She is highly professional and easy to work with. I would give her my highest recommendation. December 10, 2017

    Bill D.

  • With Mary DeRose as our realtor we recently sold our Derwood home after only 3 days on the market! Ms. DeRose was very knowledgeable about our neighborhood and the housing market in general. She met with us several times to give us ideas about updates that would increase the value and desirability of our home. She also gave us great tips for little things that helped us prepare for listing. During the whole process – from listing to settlement – she kept us informed and answered all of our questions. We felt very comfortable with the outcome of our sale being in Ms. DeRose’s hands and highly recommend her! June 24, 2016

    Paul and Denise

  • Excellent agent. Was very interactive with us on suggestions to prep our home for sale. Everything from the large stuff (replace 11 year old carpet and painting) to the small stuff (suggested replacing the outlet covers to give it a nice new look with the new paint). Also helped us define a good price point to be able to move the house quickly to avoid 2 mortgages. Using her suggestions we were able to sell the house in 3 weeks. One of our open houses had 3 offers. July 16, 2016

    Paolo A.

  • Mary was excellent in helping us navigate through the new TRID policies when we bought our home. She is patient, professional and cares about her clients. I would recommend her to any of my friends.  Dec. 4, 2015

    John and Sophia

  • Mary DeRose is the realtor I used recently for downsizing from a townhouse to a two-bedroom condominium. During the fall of 2014, I had expressed to her an interest in downsizing. Mary took the time to help me decide what I really wanted in a new living arrangement. She found me a condo where both of us felt I would be comfortable. She became my advocate in the purchase process and arranged everything. As to selling my townhouse, Mary made several recommendations as to how best to set up my townhouse to look its best. I followed all of her suggestions. The photographer she used took fabulous pictures (once they saw these photos, a number of my friends asked me why I would want to sell such a beautiful house). The house sold within a day, and at a the price both Mary and I believed was realistic. She took care of all of the arrangements for the sale so that part of the transaction was also very simple for me. Mary knows what she is doing. She has been in this business for a number of years and has the contacts to ease any problems that may pop up. She was always available when I had questions and she kept me in the loop the entire time. I would highly recommend Mary if you are planning to either sell your home or purchase a home. I consider her as a top-notch realtor. Aug. 12, 2015

    Elaine H.

  • It was a great pleasure to work with Mary. She is very knowledgeable about the local market and knew exactly what was needed to get my Mom’s house on the market and sold quickly for a fair price. Her network of handymen did a wonderful job of preping the house for showings, at very reasonable prices. Mary had potential buyers in quickly and the house sold, for our asking price, within 60 days. She also did a great job of walking us through all the necessary paperwork and quickly communicated any important information. I highly recommend Mary. July 30, 2015

    Peggy O

  • Mary made many suggestions to help prepare the house for sale. Mary has excellent follow through and organization skills. The contract-settlement process was a breeze! June 30, 2015

    Susan B.

  • Mary was very easy to work with. Her response was immediate and professional. Her demeanor was very comforting and she listens very well to all concerns. She isn’t shy to make suggestions that will increase value and/or speed up a potential sale. She figured out exactly what I was looking for and delivered a buyer quickly. July 6, 2015

    Rob H

  •  I found Mary to be not only pleasant and professional, but also very kind, caring and considerate. We contracted with Mary to sell my mother’s house. Mom had passed away early in December of 2014. My sister and I are both out of towners, so the task of selling Mom’s house turned out to be a bit more complex than either of us anticipated. Mary was simply wonderful – she knew Mom’s neighborhood intamately, had an excellent understanding of the local market, and was able to recommend quality contractors to take care of all the little things that needed to be attended to in order to sell Mom’s house. Mary also went a little beyond what I would normally expect from a realtor, she truly took a personal interest in making sure Mom’s property was presented in a manner that my mother would have approved of. That extra effort to ask about features were important to Mom, and to highlight many of those features made what could have been a very emotional sales transaction a lot less stressful. Our family is deeply indebted to Mary for handling this particular transaction with so much personal attention. I would recommend Mary’s services to anyone who is looking to either buy or sell, and I am happy to say I have gained a new friend as the result of this business relationship. July 1, 2015

    Julie O

  • Mary was a huge help in finding a house that met my needs. She is an expert in the Potomac Rockville area and was attentive to every detail. She was a real asset to me in the process of finding a home. I would highly recommend her. April 30, 2015

    Doug S

  • My fiance Chelsea and I were so fortunate to be referred to Mary by a colleague of ours.

    She went above and beyond anything we could have hoped for in our Realtor. Mary was very attentive, learned what was important to us quickly, and focused her search based on those needs.

    We had a rather lengthy negotiation process, and without Mary advocating, as well as advising against certain suggestions from myself, we would not have the property we do today. Mary was always honest with us, even when delivering news we didn’t want to hear, while having our best interest at heart.

    Mary picked up on things within the property we never would have noticed and made certain those issues were addressed. She knew the area, and was tremendous when it came to diagnosing issues in the property itself. You can tell Mary’s level of expertise is beyond reproach.

    I speak for my fiance as well when I say we can’t thank Mary enough. She helped us realize a goal that we weren’t sure we would ever achieve in this area. It should go without saying that we would recommend Mary to anyone in the market. She is, quite simply, a terrific real-estate agent, and she has helped Chelsea’ s and my dream of owning a home come true. Thank you, Mary. – March 13, 2015

    Chelsea and Steve

  • Mary priced our house perfectly to sell. She recommended a few tweeks that we did to the home and due to her recommendations the house ended up looking awesome. Her marketing skills are phenomenal – when we viewed the images of our house on her website we almost didn’t want to move (not exaggerating). We had an amazingly high number of viewings and the house went quicker than we ever imagined possible an for more money than we ever imagined getting. I recommend anyone buying or selling a home use Mary DeRose- she is extremely professional, witty, responsive, friendly, and easy to communicate with. I cannot say enough wonderful things about this realtor.  – Jun 11, 2014

    Chuck and Kelli

  • Mary was wonderful!!!! She was very knowledgeable and helped us a great deal. She was a terrific advocate for us. I will, and have already, recommended her to friends and colleagues.- Sep 7, 2013

    Todd and Kesi M.

  • Mary redefined to me what it meant to be a great real estate agent. She worked tirelessly (and I can’t emphasize that enough) to help my wife and I both sell and buy. She was always available to talk, email or txt about what ever questions we had. Home buying is a complicated and emotional process and Mary was happy to explain and re-explain all parts as well as talk us off the ledge when the stress level got high. I would highly recommend Mary to anyone looking for an agent. We love our new house and have Mary to thank for it. – Aug 5, 2013

    Jared F.