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About Me

About Me

Hello!  I am Marie Lally and I am a Realtor with O'Brien Realty in Southern Maryland.  I am honest, hardworking, responsive and professional.  I am dedicated to providing a high level of service to my clients.  I enjoy people and love being a Realtor!

I am a Southern MD resident, having moved here from the Philadelphia suburbs (Bucks County) in 1989.  I am proud to say that St. Mary's County is my home...I love what our great region offers!  I love the birds and wildlife, I love the beautiful water and, most of all, I love the kind, good, people in Southern Maryland!

If you are in the market to buy or sell, please give me a call!  I always love meeting new people and would greatly appreciate the opportunity to assist you with all of your real estate needs!  Please send me an email at or give me a call at 301-748-8698.


Areas of Expertise

I live in and love Southern Maryland...this is the geographic area in which I have expertise.  In addition to having a great knowlege of this beautiful area, I enjoy working with everyone I meet, but especially enjoy working with first-time homebuyers and sellers!  I have a background in customer service and always strive to maintain responsive, friendly, professional service to my clients.  I take whatever time is needed with first-time homebuyers to make their purchase enjoyable, memorable and well informed.  I am patient.  For sellers, I provide innovative marketing strategies, open communication, and a promise to market their property as intensely and agressively as I would market my own.  I have earned degrees and have many years of experience in both statistics and economics...I understand the unique market conditions we are experiencing.  I am hard working and know that my persistence, my innovative strategies and unique ideas will provide my sellers with the reassurance they need concerning the marketing of their homes.  

New construction has always been my passion.  Growing up, my father owned a construction company and later, I was Vice President of a construction company, too.   Additionally, I have experienced great success in new home sales, having worked as a community sales manager for a Southern Maryland builder.  The process of homebuilding is exciting and I still keep my hands into the mix with a support company that I own and operate for new home builders.  This company, Home Builder Services Inc., provides quality assurance services and customer service/warranty services to builders - I have experience working with both small local builders as well as large National builders.  My builder experience through the years includes services provided to companies such as K&P Builders, Centex Homes, K.Hovnanian (previously Washington Homes), Patriot Homes (Lennar), Rocky Gorge Homes, Thomas Homes and others.  These experiences have provided me with a high level of knowlege in new construction and customer service. 

Inquiry Form

Please fill out the form, below, to inquire about a property, inquire about buying a home, or inquire about selling a home. I am happy to assist you! Of course, I can always be reached on my cell phone at 301-748-8698, or email at For professional, responsive and friendly real estate services, call Marie!




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Recent Past Client Reviews of Marie Lally

Marie is very impressive with a capital HELL YEAH! I bought and sold a house utilizing her standout realtor expertise and couldn't be happier! She has obviously honed her tradecraft and moreover works tirelessly for her client. The end results are her favorite advocate. FACTS: I had numerous offers   in a short time period and received exactly what I wanted: minimum closing support and the FULL asking price of the house (of which she rightly recommended). In addition, Marie keeps you constantly apprised and engaged on all deliberations; and will aggressively support the buyer's realtor to get their mutual affairs in order. She is hawkish in trying to secure the sale. She will text or call you back in short order. I couldn't be more satisfied. Go with Marie first. My advice will be the best you have had in years



We interviewed several agents prior to listing our home. From our first meeting to discuss listing our house, we knew Marie was the right agent to list and sell our home. She had done extensive research on our home, the community and comparables before we met. Her knowledge of Southern Maryland and in particular the 7th District real estate market is second to none. She listened to our needs and budget and offered advice with professionalism and tact. We were extremely impressed with the amount of time and effort Marie and her team put in once we signed a listing contract with her. The amount of photos and video produced to market our home still amazes me. When the listing went live Marie kept us well informed on all showings and feedback from prospective buyers. When we received an offer, Marie's knowledge and experience was outstanding and helped us through the negotiations. Her guidance through the negotiations and subsequent inspections and requests was top notch. Marie kept us updated throughout the entire process, from contract signing to settlement and even after. We couldn't be happier with the process and outcome of our home sale. I honestly believe Marie's steady hand and experience kept my anxiety of a home sale and move to a minimum. If you're looking for an agent who has your best interests in mind Marie Lalley is the right choice



Had an agent list my home for 55 days with no results or offers. Terminated my contract. Hired Marie and received a full ask offer within 5 days. She produced results so quickly when I was so deterred from the previous 2 months. Marie knows the SOMD market and backed it up with plenty of material  to show me during our first meeting. She was prepared and very eager. Marie was so transparent during the entire process it really put me at ease. And the photos she took of my home truly made it stand out in the crowd. Even the verbiage she chose to describe my home made me not want to leave! But I hired her for results, and she produced them quickly with closing in 5 weeks. I stand behind her professionalism and will refer anyone to her. I’m so happy to have found her believe she the best realtor in Maryland easily. Thanks Marie for putting my family at ease, producing results, and being a great person



This is the second time I have worked with Marie, first as a seller, this time as a buyer, her level of dedication is above and beyond in my opinion. From the initial phone call til closing day, she is in constant contact with you and guiding you every step of the way. Top notch Realtor, I wouldn’t  use anyone else for my Southern Maryland needs



When selling our home, due to circumstances beyond our control, we had a very unusual experience. We can't begin to express the gratitude we have for the way Marie handled the process. Marie went above and beyond to get the sale finalized in a timely manner. Marie was always very pleasant and  patient. We were updated daily and had every future step of the process clearly explained.



We were recommended Marie by a friend to sell our first home and purchase our new home. The moment Marie stepped in our first home and saw the same vision for our first home we had 5 years ago, we knew she was the one to list it. She took many awesome pictures, videos, and aerial shots of the  entire property. The pictures were breathtaking! The online presence she created led to many interested buyers rapidly. Our home sold extremely fast! The home buying process with Marie was equally awesome as she made sure all aspects of our new home purchase was taken care of and addressed. Marie is easy to talk with and she communicated with us in multiple ways to ensure all the information we needed was clearly and quickly received. If you work with Marie, you will enjoy your home selling and home buying process!







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