Leave a Message

Thank you for your message. We will be in touch with you shortly.

main

Meet Deirdre & David O’Brien

Deirdre O'Brien | CA DRE# 01990538
David O'Brien | CA DRE# 01832087

 
Deirdre and David are a top producing team, selling 24 homes a year on average. Their significant production means they have their "finger" effectively on the pulse of the real estate market in Marin. This gives their clients an edge whether buying or selling. They are also part of the Marin Top Agent Network, Marin Platinum Group, Marin Bus Tour, and North Marin Agent Networking Group. Additionally, being a part of Compass Marin means they are part of the brokerage with the largest market share. All of this means their clients are better served, because of their in-depth market insight, extensive experience, and networking connections.


Deirdre and David are always honored when someone chooses to work with them.

Numbers That Define Our Success

With top rankings in Marin County, a strong track record of successful transactions, and a deep understanding of the local market, we’ve helped countless clients buy, sell, and invest with confidence.

339+

Closed Sales

$287.8M+

Total Value

5 Star *****

Zillow & Google Reviews

What Our Clients Say About Us

David and Deirdre have been a pleasure to work with since the get-go. They have been graceful with us - it was our first house, so we had a LOT of questions and needed a LOT of explanation. Throughout this whole process, not only they were extremely available and responsive, but they always went above and beyond to ensure we were set up for success! They negotiated our offer with patience, and always mad...

— Pamela B.

01 / 05

View All

Here’s What You Need to Know!

Thinking of Moving to Marin County, CA? Discover what new residents wish they had known before relocating: ✔️ Cost of living vs. San Francisco ✔️ Commute & traffic on Highway 101 ✔️ Home prices in Marin’s competitive market ✔️ Lifestyle & community – Schools, outdoor activities & more. Watch now.
Here’s What You Need to Know!

How Much Is Your Home Worth?

  • Instant property valuation
  • Expert advice
  • Sell for more

Our Blog

Lifestyle

Fairfax Square Dance Night

David O'Brien  |  April 4, 2025

Fairfax Fun

Real Estate

What You Need to Know About the Mill Valley Real Estate Market

March 27, 2025

Key Insights Into the Mill Valley Property Scene

Marin County Real Estate Market

Marin County Real Estate - Top Agent Bus Tour

David O'Brien  |  March 16, 2025

Marin Off Market and Coming Soon Properties

We’re Here to Help

At Team O’Brien, real estate isn’t just about buying and selling homes—it’s about helping you make the right move with confidence. Whether you’re buying, selling, or investing, we take the time to understand your goals and provide tailored solutions for success.