Theresa Sullivan

Theresa Sullivan

Broker Assistant (608) 519-2345

About Theresa

I am a retired United States Navy leader, business professional, and community advocate who brings more than two decades of experience in leadership, personnel development, administration, and client service.

After retiring from a distinguished Navy career in 2023, I transitioned into the civilian workforce, where I have continued to apply the organizational, communication, and leadership skills I developed during my military service. I hold a Bachelor's degree and am currently pursuing my Master of Business Administration (MBA).

During my Navy career, I served as a Command Career Counselor, helping Sailors navigate career decisions, professional development opportunities, and life transitions. My assignments took me across the country, including Illinois, California, Virginia, and Hawaii, giving me extensive experience working with people from diverse backgrounds and life experiences.

I am passionate about helping others reach their full potential and believe in the importance of resilience, personal growth, and lifelong learning. My own journey as a survivor of domestic violence has deepened my commitment to supporting individuals who are overcoming adversity and rebuilding their lives. I understand firsthand the transformative impact that support, education, and personal determination can have on a person's future.

Outside of my professional life, I enjoy spending time with family and friends, traveling, and prioritizing self-care and wellness. My husband, Dr. Sylvester "Sly" Sullivan, and I are proud parents of a daughter attending Onalaska High School. Our household is also shared with Astro, a Ragdoll cat, and Paddington, Astro's younger brother, a Ragdoll-Siamese mix. Together, the two cats ensure there's never a shortage of affection, curiosity, or unexpected mischief.

Whether in military service, business, or community involvement, I strive to lead with integrity, compassion, and a genuine desire to make a positive difference in the lives of others.

I am a retired United States Navy leader, business professional, and community advocate who brings more than two decades of experience in leadership, personnel development, administration, and client service.

After retiring from a distinguished Navy career in 2023, I transitioned into the civilian workforce, where I have continued to apply the organizational, communication, and leadership skills I developed during my military service. I hold a Bachelor's degree and am currently pursuing my Master of Business Administration (MBA).

During my Navy career, I served as a Command Career Counselor, helping Sailors navigate career decisions, professional development opportunities, and life transitions. My assignments took me across the country, including Illinois, California, Virginia, and Hawaii, giving me extensive experience working with people from diverse backgrounds and life experiences.

I am passionate about helping others reach their full potential and believe in the importance of resilience, personal growth, and lifelong learning. My own journey as a survivor of domestic violence has deepened my commitment to supporting individuals who are overcoming adversity and rebuilding their lives. I understand firsthand the transformative impact that support, education, and personal determination can have on a person's future.

Outside of my professional life, I enjoy spending time with family and friends, traveling, and prioritizing self-care and wellness. My husband, Dr. Sylvester "Sly" Sullivan, and I are proud parents of a daughter attending Onalaska High School. Our household is also shared with Astro, a Ragdoll cat, and Paddington, Astro's younger brother, a Ragdoll-Siamese mix. Together, the two cats ensure there's never a shortage of affection, curiosity, or unexpected mischief.

Whether in military service, business, or community involvement, I strive to lead with integrity, compassion, and a genuine desire to make a positive difference in the lives of others.

The Expert Advisor Team Includes:

  • Listing Agents
  • Buyers Agents
  • Showing Agents
  • Marketing Director
  • Transaction Coordinator
  • Operations Director
  • Moving Trailers for Client Use

All working together to take your transaction from the beginning to close with individual expertise and a common goal.

The Castle Realty of La Crosse Expert Advisor Team is proud to be one of the most trusted and respected real estate teams in the Coulee Region and surrounding areas. Castle Realty has been voted La Crosse County’s “Best Real Estate Company” from 2018–2025, a testament to the trust our community places in us. With over 200 5-star Google reviews, our clients continue to share the impact of our service, guidance, and care.

Our mission is to distinguish ourselves by providing business from the heart to our clients, our team, and our community. At Castle Realty, we create an environment where growth is continual, potential is discovered, and mediocrity is never accepted. We are dedicated to equipping our agents with the industry’s best tools, training, and support so every client receives an outstanding experience and maximum value on every transaction.

We are always looking for driven and dedicated professionals who want to grow, contribute, and succeed. Castle Realty offers comprehensive training, a collaborative team culture, and a supportive workplace designed to help agents reach their full potential. (Please Note: Castle Realty of La Crosse operates on a full time, fast paced schedule and is not for everyone.)