Welcome to 21st Century Realty Guam
Helping You Make Smarter Property Choices
About Us
We are a full service Real Estate Company
🏡" We hold the key to helping you make smarter property choices"
As a full-service real estate company, we’re proud to offer buying, selling, renting, and property management services across the island of Guam.
With over 20 years of experience, our roots run deep—as native-born professionals who understand Guam not just as a market, but as home. We’re more than just agents; we’re your trusted local advisors, guiding you to the right properties where you can plant roots and build a legacy.
Finding and investing in the right property isn’t always easy—but that’s where we come in. Our knowledge of Guam’s unique villages, neighborhoods, zoning laws, and development trends gives our clients a clear advantage in making confident, informed decisions.
When you choose us, you’re not just getting real estate agents—you’re gaining a team that values accountability, transparency, and service that exceeds expectations.
The Brokers Story
Melanie Castro Guerrero, Corporate Broker
21st Century Realty, LLC – “We Hold the Key to Helping You Make Smarter Property Choices”
I’m Melanie Castro Guerrero, and my journey in real estate has been anything but ordinary. Born and raised in Guam, I’ve seen firsthand how this island grows, evolves, and remains rooted in family, culture, and resilience. As the Corporate Broker of 21st Century Realty, LLC, I’ve spent over a two decade walking alongside families, investors, and first-time homebuyers as they make some of the most important decisions of their lives.
What began as a passion to help people find not just houses, but homes, quickly grew into a calling. I’ve built this company around integrity, guidance, and a deep understanding of Guam’s unique market. I believe every client deserves clarity, care, and confidence—whether they’re buying, selling, or investing.
But my story isn’t just about transactions; it’s about transformation. I’ve worked through personal trials, community challenges, and shifting markets, all while staying grounded in my purpose: to empower others through smart property choices and unwavering support.
At 21st Century Realty, we’re not just agents—we’re advocates. My role as a broker is to lead with heart and experience, to nurture a team that values excellence, and to ensure every client feels heard, protected, and informed.
Whether you're dreaming of your first home, expanding your investment portfolio, or facing a complex land or probate matter, I’m here to help guide you—every step of the way.