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Tammy Costello

Are You Buying or Selling? I'd Love to Help!

Tammy brings 23 years of experience in the legal industry to her thriving real estate career. Her legal background equips her with a strong foundation for navigating the complexities of real estate, enabling her to confidently serve her clients with precision and care. Tammy discovered her passion for real estate through her love of helping people navigate significant life changes and has been dedicated to guiding clients to their dream homes ever since.

Originally from Houston, Tammy moved to Austin four years ago to be closer to family and quickly fell in love with the area’s vibrant culture and abundant natural beauty. She combines her deep listening skills, tailored strategies, and unwavering commitment to building trust to deliver a collaborative and personalized experience for her clients. Her goal is to make every transaction smooth and rewarding, no matter the challenge.

When Tammy isn’t helping clients, she enjoys exploring Austin’s stunning parks and trails, savoring local cuisine, and soaking in the city’s vibrant music scene. With two grown children and a cherished grand-baby, Tammy treasures time spent with her family, balancing her personal and professional life with grace and enthusiasm.

Ready To Get Started?

Call 512-872-4623 or fill out the short form below.

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5-Star Service

5 stars for Tammy Costello! The Austin real estate market is crazy and Tammy navigates these crazy times with perfection. Our home buying experience has been great!

Alicia Haney

Tammy Costello
Tammy was our real estate agent and she was amazing! God send. Moving to Austin from Cali, we had no idea where to even begin. Tammy helped us narrow our search. We looked for months! Trying to find our perfect home and she was there every step of the way. She’s patient, kind, on top of it and when needed straight forward and stern. Well rounded. I can’t thank her enough! I know we weren’t easy clients so anyone reading this looking for a realtor in Austin this is your sign. Give her a call. You won’t regret it.

b mc

Tammy Costello
Tammy is amazing!!! She really knows the market and how to navigate getting me the best price!!!

Barry Wheeler

Tammy Costello
Working with Tammy has been a great experience! She has helped me look at places to open a retail space and is very communicative and always follows up and makes time for me. Would definitely recommend Tammy!

Casey K

Tammy Costello
Tammy Costello was a blessing to us. She assisted us in finding a rental when moving from out of state and was so pleasant and positive during that experience. When it came time to purchase our home, Tammy was amazing!!! She answered our questions with real honest feedback and the rare instances she didn’t have the answer, she would tell us that she would get us the answer and then deliver on her word. Never at any time was there any pressure as there commonly is with agents. I can’t imagine going through the process with anyone else. Her upbeat attitude and kind character made her so fun to be around!

Chelsea Ellis

Tammy Costello
Tammy is a great and wonderful person to work with! She is very passionate about what she does and communicates with you in a way that makes you feel comfortable. She is knowledgeable in every aspect of her work and has no problem explaining things to you in detail as well as giving you all the answers to your questions. Overall she is just an amazing human being and I would definitely recommend her for any buying/selling of your home!

Connie Martinez

Tammy Costello