Meet Our Team

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Associate Broker & Realtor, Team Leader
(302) 383-7575

Andrea Harrington

Andrea is a full-time Realtor who began her Real Estate career in 2006, providing services in New Castle, Kent, and Sussex County Delaware.  In 2014, she earned her Broker’s License and is currently an Associate Broker with Compass in Greenville, DE, and also serves on The Board of Directors for NCCBOR.  She is the Team Leader and Owner of Andrea Harrington & Associates, a consistently top-ranking Delaware real estate team. 

As a native to Delaware, Andrea is familiar with the local communities and real estate market, and enjoys establishing new client relationships.  In 2022, Andrea, along with the assistance of her team, successfully closed 161 transactions, selling $57 million in Real Estate, putting her within the top 1% of all agents in the state.

Due to past experience, the use of the most up to date technology and her dedication to continued education, she carries the many skills needed in order to successfully complete any real estate transaction.  Andrea prides herself on being a hardworking, professional and reliable real estate agent.  

RE/MAX Hall of Fame

RE/MAX Lifetime Achievement Award

NCCBOR Good Neighbor Award Recipient 2016

Delaware Today Top 40 Women in Business Award Recipient 2021

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Buyer's Agent
(302) 747-6729

Kirstyn Gawel

Kirstyn started her real estate career in 2013 and joined Andrea Harrington & Associates in 2014. She acts as our team's lead Buyer's Agent where she performs custom home searches for clients, facilitates home tours, and manages all aspects of the transaction from start to finish once under contract. Prior to becoming a full-time agent, Kirstyn worked on the operational side as the team's licensed Transaction Coordinator. During this time, she helped manage hundreds of real estate transactions. This experience allowed her to learn all aspects of the buying & selling side of real estate in a very short time. Kirstyn strives to educate and always communicate with her clients so that they are confident and informed throughout the process of buying or selling their home. Her goal is to help you reach yours! As a native to Delaware, Kirstyn is very familiar with the Delaware market. She currently resides in Middletown, DE with her husband, daughter, and their dogs Lucy & Leah.

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Buyer's Agent / New Client Specialist
(302) 981-5486

Yo Hablo Español

Maria Olivera

Maria started working for Andrea Harrington & Associates in 2016. Maria is bilingual (Spanish) and she assists our Spanish speaking clients with preparing to purchase a home & explaining the process from start to finish. She also works along with our team lender to assist any of our Spanish speaking clients in need of credit repair. Maria is a licensed Realtor and also assists as a team Buyer's Agent. In addition, she assists with coordinating our Team First Time Home Buyer Seminars and other Marketing Events. Maria is an asset to our team because with her, we are never too busy for any of our clients. She currently resides in Newark, DE with her husband and son.

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Buyer's Agent
(302) 383-7779


Transparency, honesty and integrity. This is the foundation on which Stephanie has built her real estate career. Her natural curiosity drives her to listen to and learn about the people she encounters. This gives her the ability to recognize and identify the wants and needs of her customers and clients. Stephanie is empathetic, dependable, focused and will be your confidant and fearless advocate. She is extremely dedicated to working closely with all parties involved to provide a smooth and seamless transaction, bringing peace-of-mind to her clients throughout the process. Working as a full-time agent with Andrea Harrington & Associates has provided Stephanie with a great deal of experience, knowledge and expertise in the real estate industry. Prior to becoming a realtor, Stephanie enjoyed a career in advertising operations and finance, working in the accounting and banking industries for many years. While she loved that profession, nothing has captured her heart like real estate!

Stephanie is a lifelong native to Delaware and is incredibly familiar with area neighborhoods as well as the local market allowing her to provide the most precise and up-to-date feedback on market trends, comparable sales and property values. 

2019 & 2020 5-Star Professional Award Winner

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Buyer's Agent
(484) 919-4222


Devon started her real estate career in 2017 and joined Andrea Harrington & Associates in 2018. Devon is a full time realtor, licensed in Delaware, who provides exceptional service to her clients. As a native to Delaware, she has a comprehensive knowledge of the area and utilizes that information when helping you with all of your real estate needs.  Whether your family is expanding or downsizing, looking to upgrade or simplify, she works hard on the details of your real estate experience so it will be as simple, fun and stress-free as possible. Prior to real estate, Devon held a certification as a Graphic Artist and also as a Zumba instructor. During her down time, Devon enjoys reading great books and visiting new places with her family. Devon currently resides in Pike Creek with her husband, dogs and 2 children.

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Buyer's Agent
(302) 531-6970


Maria started her career as a full-time Realtor in 2020 after 5 years of teaching intensive special needs children with Smyrna School District. She is a Delaware native and attended the University of Delaware where she earned a Bachelor of Science in Early Childhood and Special Education. She became very interested in real estate after going through the new construction building process with her home in 2018. After becoming a mother, she decided to invest her skills in a new career to allow her to have a more flexible schedule, which led her to begin the journey as a full-time realtor with Andrea Harrington & Associates. Maria’s previous career allowed her to gain an abundance of skills that she can now apply to real estate. Maria is patient, personable and detail-oriented which builds on her organizational skills to create a personal experience for each client, no matter what kind of home you're looking for, to live or invest in. Maria’s goal is to help her clients find a house that they can make home, sweet home.


Buyer's Agent
(302) 588-1913


Khalilah Ling started her real estate career in 2018 and joined Andrea Harrington and associates in 2021. By keeping her finger on the pulse of the latest trends and movements of the Delaware real estate market, Khalilah is able to offer her clients top-notch guidance from start to finish, ensuring the entire process is seamless, efficient and rewarding. Prior to joining the world of real estate, as a successful entrepreneur in the commercial cleaning industry, Khalilah became an expert in figuring out how to provide customers with what they want and need. It starts with fully appreciating each customer and then finding creative ways to fulfill their needs.This insight, along with her passion to help others achieve their goals, is how she approaches her work as a real estate professional. Originally from Northern Delaware, Khalilah is a wife and mother of 1 and has a desire to serve you just like family!

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Buyer's Agent
(302) 275-7133


Casey aims to be your go-to resource for personalized service and guidance and is committed to being there for her clients every step of the way. Whether it's finding your dream home, securing the best deal on the sale of your current home or investment related, you can trust that you have an honest and accessible realtor who is fully dedicated in helping you achieve your real estate goals.

During a time of unpredictability and a rapidly changing market, Casey found her home at Andrea Harrington and Associates in the height of 2021, when home buyer competition was at an all-time high. A demanding market not only required creativity and stand-out offers, but persistence, optimism, and determination to keep her clients head in the game and eye on the prize!

Casey is a Delaware native, with a history in pediatric healthcare. Today, she resides in Hockessin and can be heard delivering the same encouraging energy to her twin boys on any sideline. Casey enjoys physical fitness and strives in setting and reaching new goals and inspiring others to do the same!

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Buyer's Agent
(443) 350-6001

Licensed in DE & MD


Krystal is excited to assist you in selling your home as well as finding your dream home in Maryland or Delaware. She would love to guide you through the home buying or selling process from contract to closing. Krystal has been a licensed realtor since 2018. She also has 18 years of teaching experience for Cecil County Public Schools, so she knows Cecil County and all it has to offer. Krystal graduated from the University of Delaware and lives in Middletown, DE with her family. When she’s not helping her clients with their home goals, she enjoys boating, going to the beach, reading, and spending time with her husband, two kids, and French Bulldog.

As a part of Andrea Harrington & Associates, you not only get Krystal’s expertise but a team of experienced professionals to support your real estate journey. Her dedication to helping her clients find their perfect home and her attention to detail are like no other. Please contact Krystal to discuss your real estate ambitions. Her positivity and passion for real estate will make your home buying or selling experience exceptional.

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Buyer's Agent
(302) 383-1904

Licensed in DE & MD


Licensed in both Delaware and Maryland, Marissa brings a wealth of knowledge and expertise to her clients in both locales.  Marissa has been a licensed realtor since 2015 and joined Andrea Harrington & Associates in January 2024.  She is a native to Delaware, spending 22 years in New Castle County, before moving to Cecil County Maryland.  As your dedicated agent, Marissa prides herself on being highly responsive and available for her clients.  She enjoys guiding clients through the homeownership journey and helping them achieve their ultimate real estate goals.

In her spare time, Marissa enjoys cooking, boating, and spending time with her family!

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Director of Operations & Transaction Coordinator

(302) 383-7575


Maria joined Andrea Harrington & Associates in 2017 as the Director of Operations and Transaction Coordinator.  After graduating with a Bachelors Degree from Temple University in 2011, she spent approximately five years working in the Technology industry, as the Director of Operations and later Vice President of Marketing for a computer software company.  Maria decided to shift gears and pursue a career in real estate operations because she saw the passion and dedication that Andrea Harrington and her team had for the business. She believes there's great opportunity for growth and innovation in this field. Maria works closely with Andrea Harrington to manage all daily operations, sales transactions, and strategic marketing and advertising intiatives.  Maria is a native to Delaware and currently resides in Philadelphia, Pennsylvania.

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Andrea Harrington, Associate Broker/REALTOR
Licensed in DE
302-383-7575 | Direct

Compass RE
3701 Kennett Pike, Greenville, DE 19807

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