Marie Lally (O'Brien Realty) Real Estate Agent



Marie Lally
location_on Mechanicsville, MD — O'Brien Realty
Get to Know Marie Lally

Marie Lally has been a Realtor, with O’Brien Realty, for over 12 years. Due to Marie’s hard work and dedication to her clients, she has achieved a high level of success in real estate, having earned a “Diamond ” award through the Southern Maryland Association of Realtors, which is only awarded to the top producing Realtors. 

Marie works with both Buyers and Sellers. She offers her clients patience, professionalism and knowledge about the local Southern Maryland market and the process of buying and selling real estate. Marie’s background as a statistician and economist gives her a unique, analytical perspective on pricing, trends and market activity. Marie’s areas of expertise include assisting Buyers and Sellers in Charles County, Saint Mary’s County, Calvert County, Anne Arundel County and Prince Georges County, in Maryland. Marie works with first time home buyers and the seasoned pro! She has also been a very successful listing agent, always working to get the best price possible for her Seller clients, with her intense marketing strategies. Marie’s on-line presence is strong and her listings do not go un-noticed!

Marie is also experienced in the world of new construction. Having owned and operated a home improvement business, then having worked as a subcontractor for various home builders, both large and small, she has knowledge and experience of construction and building practices. Marie also has experience in new home sales and new home contracts, having experience from selling hundreds of new homes, in addition to resale properties.

Call Marie Lally for all of your Southern Maryland real estate needs, whether buying or selling. Working with a true professional is necessary. 

Marie can be reached via email at, text or phone, at 301-748-8698.


Diamond Award, Southern Maryland Association of Realtors

Hall of Fame, Southern Maryland Association of Realtors


Friendly, responsive, professional real estate services in Southern Maryland - Serving St. Mary's County, Charles County & Calvert County! Call Your Southern Maryland Realtor today at 301-748-8698!