Galveston Real Estate Agents

Marsae provides a superior level of informed professional real estate consulting in the greater Houston-Galveston area. Her knowledge will save you time, money and unnecessary stress. Marsae will also deliver personalized service with absolute attention to detail! We offer TOP NOTCH service and cutting edge technology combined with years of experience. Known for our integrity, honesty, professionalism, negotiating abilities & attention to details. Whether you are buying or selling we go the extra mile to make it a pleasant process. We LISTEN & HEAR what you have to say while offering our professional advice with a positive attitude. We have a large base of loyal clients who refer us to friends & family and we strive to add you to our list!

Andrea P. Sunseri, a licensed Realtor since 1977, has devoted over half of her life assisting buyers and sellers in the Galveston market. Born on the Island, Andrea has extensive knowledge of the Galveston community working with literally hundreds of customers and clients and consistently handling 55-65 transactions per year making her one of the top sales agents in the Galveston MLS. Her involvement in real estate leadership is noted on the local and state level:

Selected Galveston County's Top Realtor – 2015 & 2017 Galveston County Daily News Readers' Choice Awards

Awarded Silver in Galveston.com's 2015 & 2016 Best of Galveston Awards, "The Oscars of the Gulf Coast"

Selected in 2011, 2012, 2013, 2014, 2015, 2016 & 2017 as one of Texas Monthly's Houston Region FIVE STAR Real Estate Agents

GAR President 1994 and 1995

Galveston Association of REALTORS (GAR) Director 1993, 2008-2010

GAR Professional Standards Committee 1997 - 1999

GAR MLS Chairman 1999 and MLS Committee 2013-2015

GAR Education Chairman 2011-2012, 2001-2008, 1997-1999

GAR Secretary/Treasurer 2010

GAR REALTOR of the Year 1996 and 2007

GAR Distinguished Service Award 2009

Houston Association of REALTORS HRIS Leadership 2011, 2012 and 2013.

Houston Association of REALTORS Board of Directors 2008

Texas Association of REALTORS (TAR) Director 1995 – 1999

TAR Legislative Committee 1995 – 1997, 2006 – 2008

TAR Nominating Committee 1997 and 1998

TAR Education Committee 1997 – 1999

TAR Education Chairman 1999

TAR Region 10 Vice President 1999

TAR Region 10 Representative 2001 – 2007

TAR Convention Task Force Co-Chairman 2006 and 2010

TAR Banking and Mortgage Fraud Task Force Committee Member 2008

TAR Public Policy –Sub-Committee Financial Services 2010

TAR Professional Standards Committee 2010

TAR Public Policy Subcommittee – Land Use Chairman 2012-2016

TAR Strategic Planning Committee - 2013

TAR Political Action Committee Trustee - 2016-2018

Andrea was on the TAR Executive Board as the Region 10 Vice President in 1999 and then again from 2001-2007. During her 1999 term, the Houston Association of REALTORS was a part of Region 10. Her influence on the State level helped to secure the Texas Association of Realtors State convention in Galveston in 2007, 2010 and 2016.

I'm Terese Butler, and I've used my 30 years of real estate experience to sell residential resort homes, land development, and commercial properties here on Galveston Island. I was born on the Island, grew up here, and raised my family here. Furthermore, I look forward to each new day with a big smile on my face because I love my job. Real estate is my passion; every day is different in my world. My "roll up the sleeves" approach and "outside the box" thinking, combined with my creative problem-solving skills, have been the formula for my success. I go the extra mile for my clients, which has led to many lifelong friendships. If you want a hardworking, knowledgeable, and dedicated Realtor, I'm the one.

My season spent in the non-profit world gave me the foundation to build relationships with a broad spectrum of clients and donors -- from community champions and volunteers to executives, educators, and leaders in the business community.


Our team has an appreciation of all that makes the Bayou City a unique place to call home. From inner-loop areas where we've lived, worked and played like the Museum District, Montrose, and EaDo areas, to the quickly growing Garden Oaks/Oak Forest, Greater Inwood, Spring Branch and Heights communities, we provide our clients a unique perspective on the history, current and planned development of Houston's most popular neighborhoods. In addition to earning the business of clients spanning The Woodlands, Cypress, and Memorial, we assist clients with investment properties and second homes in Galveston's Historic East End, beach and bay properties on the West End, Jamaica Beach and throughout the Kemah area.


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Real estate is a powerful thing. Where you live becomes the center of your universe: your home base and a place where memories are made. Even an investment property can have a profound effect on your life's story when chosen correctly, it becomes long-term financial freedom and a vital part of your well-diversified portfolio.



With a passion for service, I am ready to help with your home buying and selling needs. I carry the values of hard work, integrity, and outstanding client service into everything I do.



Not quite ready to buy or sell, but curious about neighborhood options, local schools, our techniques, or current real estate buzz? Don't be shy, reach out to me anytime so I can provide you with exceptional service and information about all things Real Estate, and the local Galveston County area!



When I am not making homeownership dreams come true for my clients, I love fishing, playing tennis, swimming, and most of all, spending time with my family. I'm a proud resident of the Bayou Vista community and have fallen in love with the people and the waterfront lifestyle.

About Me:

Originally from Michigan, I lived in San Diego for ten years after graduating college until my wife and I moved to Texas to be closer to her family. Prior to real estate, I earned a bachelor's degree in Business Administration from Wayne State University in Detroit, Michigan. As a real estate broker, my mission is to introduce buyers to a community where they feel a connection, and help sellers with the sale of their home so that they can experience a smooth transition into the home that best accommodates their current needs and situation.

Stemming from my desire to interact with people in a challenging career, business endeavors range from the telecommunications industry where I held positions in management, to working with my family's beach rental business.

After recognizing the potential in the vacation home business, I earned my real estate license in order to take a more active role in the family business, as well as expand my own business into residential sales.

Determined, hardworking, knowledgeable, and adaptable are a few of the characteristics that attribute to my success. However, my incomparable strength is attention to detail, which is an instrumental component in every phase of the real estate transaction. Furthermore, I emphasize the importance of communication, which is paramount to delivering exemplary customer service. I listen to clients' needs and wants, educate them throughout the process, and keep them informed every step of the way, even if there are no updates available.