Your Journey. Your Home. Your Agent.

My name is Madeleine Alonzo and I am Your Realtor on the Block.

I grew up in Union City and after spending over 15 years in the South Bay, I recently moved back home.  Being born in Guatemala and raised in California, I grew up watching my parents work toward their American dream of homeownership. Years later, I was able to accomplish the same dream myself - and it shaped everything about how I serve my clients today. 

My background is in Advertising but my heart has always been in helping people.  That’s why I spent 18 years as a preschool teacher before becoming a Realtor with Coldwell Banker.  I’ve been a first-time homebuyer and recently a seller, so I understand just how emotional, exciting and overwhelming this process can be. Having the right agent by your side makes all the difference. 

As your Realtor, my promise is simple: I will listen to you, support you, guide you and make sure you feel seen, understood, and cared for every step of the way. Real Estate isn’t just about the market - it’s about people, relationships, and big life transitions.  And I’m here for all of it.  

I would love the opportunity to help you find your next home - so you can be the new homeowner on the block.