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Thais Derich

RealtorĀ® | DRE# 02319955

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About Thais
Building Wealth Through Real Estate—One Property at a Time

I started in real estate before I was married or had kids. I had a life-changing realtor, Don, who encouraged me out of buying a condo and into a duplex in San Francisco. My husband and I then converted that duplex into a triplex, learning every detail of the process—from permits to property management—and kept it as a rental income property when we moved our family of four to my husband’s home town, Mill Valley.

That first investment opened my eyes to the power of real estate as a wealth-building tool. In Mill Valley, we purchased our primary home with a legal 2-bedroom, 1-bath unit in the yard (before ADUs were even a thing), and we’ve since expanded our portfolio to include multiple units across Mill Valley and the Bay Area. Through it all, I managed these properties myself—balancing real estate alongside careers as a technical writer, teacher, mother, and award-winning author.

After years of hands-on experience building my own portfolio, I realized something important: the knowledge I’d gained through, my success was too valuable not to share. Now I bring both worlds together—the practical, in-the-trenches experience of an investor and the professional expertise of a licensed full-time RealtorĀ®.

Why does this matter for you? Because your property is likely your biggest asset, and it deserves to be treated that way. Whether you’re buying your first home, exploring investment opportunities, or ready to sell and maximize your return, I understand the journey from both sides. I’ve been the homeowner making tough decisions, the landlord managing tenants, and the investor calculating returns. I know what works—and what doesn’t. Here's a sneak peak: closing the deal is the most important part.

Based in Marin County with Compass, but happy to talk to people worldwide. I’m here to help you make smart, confident real estate decisions.

I want to be that real estate agent that you text well after I’m retired just to say hello and share your latest purchase or sale like I still do with my first agent in San Francisco!