Theresa deSousa

Principal Broker in Oregon

With nearly 30 years of experience in real estate, Theresa deSousa is a trusted and deeply knowledgeable advisor in the Portland metro market. Known for her calm demeanor, attention to detail, and masterful negotiation skills, Theresa has helped hundreds of families find their dream homes and navigate complex transactions with confidence. A certified Master Certified Negotiation Expert (MCNE), she began honing her negotiation talents early—growing up in a family of eight children made it a necessary life skill. Clients consistently describe her as responsive, thorough, and genuinely caring.

Born and raised in Oregon, Theresa’s deep roots in the community and longstanding relationships with other agents give her clients a true edge when it comes to market insights and negotiations. She believes in collaboration over competition, always putting her clients’ goals first and ensuring they feel informed and empowered throughout the process. Her clients return time and again, knowing they have an advocate who brings wisdom, integrity, and a personal touch to every deal.

Outside of real estate, Theresa enjoys digging in the dirt—both in the garden and through home remodels. She owns and manages rental properties, has a passion for flipping homes, and is the proud caretaker of over 70 houseplants. Theresa shares both life and business with her husband and real estate partner, Brian Spear. Together, they stay busy cheering on their 12-year-old daughter at competitive soccer tournaments across the Pacific Northwest.

My Happy Clients

"Theresa deSousa has handled two real estate transactions for me, both while I was living out of town. She knows both the market and the business thoroughly, loves her work, and makes you feel like you are her only client. You can trust her advice without hesitation. She is a great listener and communicator, answers every question, and keeps you informed every step of the way. She is a talented problem-solver and handled an astonishing array of situations for me with creativity, professionalism, and good cheer. No detail is too small or problem too big. She will come up with the best strategy and stay focused on getting the best possible outcome. Theresa is honest, genuine, and one of the best professionals I have ever encountered in any field. Lucky is the person who has her for their realtor. I recommend her very highly and without reservation."

Laura Coats

"I have hired Theresa DeSousa for selling/purchasing several homes over the last 22+ years. Not only is Theresa a fabulous agent/broker, she is also a thoughtful, generous and kind person. She rode every wave and hurdle with me effortlessly in all of my quests to find homes. Theresa's expertise is bar none! She cares and will be there for you! I'm so glad I met her and consider her a friend."

CJ A.

"Theresa and Brian helped us sell our house last June. Knowledgeable, kind and compassionate they helped us navigate challenges, complications, hurdles and setbacks making it all look easy. They got us a great price for our family home amidst a challenging market. And then they helped us find and purchase a really special gem of a recreational property that is a dream come true. They possess some kind of special real estate wizardry! We are so glad we found them!"

Connie Cohen

"I worked with Theresa in both buying and selling a home over the years. She is highly knowledgeable, answers every request and question promptly and is effective and efficient. I would work with Theresa again in a heartbeat!"

Zillow user

"Theresa was communicative, thorough, and helpful throughout the whole process! Theresa helped my family find our dream home and answered all of our questions throughout the process! She quickly set viewings of houses and supported us in finding the best options for us! She is wonderful and would contact if I ever sell or buy another house in the future!"

Zillow User

"After I retired, I sold my house in Portland. I used Theresa as my agent and she was AMAZING! She was there every step of the way and was ALWAYS only a phone call away! 6 years later I decided it was time return. I knew I couldn’t trust anyone else in the business to do as well of a job I called her and again she SMASHED IT! You will be hard pressed to find a more competent agent than Theresa in the Portland metro area but you sure can do worse…. much, much worse."

Zillow User