Fionnuala O’Sullivan

I was trying to figure out where I could only grade four stars, because let’s face it, no one’s perfect. But with Fionnuala, I just couldn’t; it wouldn’t be honest. Five star service across the board, both with the sale of our house and the purchase of a new one. She was responsive, available and professional. Perfect!

Shannon B

Fionnuala's Current Listings

white door entrance

5122 S Mayflower St

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Fionnuala O’Sullivan

Fionnuala O’Sullivan

Designated Broker – Owner


[email protected]

Born in Africa and raised in Ireland, I have been a Seattle resident since the early 1990s. I am an owner and the Designated Broker of GBK Realtors: an independent, full service company and one of Seattle’s most successful brokerages. I am a full-time professional Broker with two decades of experience. Today’s Real Estate market is fast moving and complex. I have the expertise and experience to help you navigate it.

My number one goal is to help my clients successfully navigate the process of buying or selling a home. By choosing to work with fewer clients, I can offer a personalized service and my undivided attention, which allows my client base to remain largely referral based.

I strongly believe that any good relationship is built on trust. Buying or selling a home can be an extremely personal and sensitive process, and is best achieved within a collaborative, understanding environment.

GBK has a significant percentage of the luxury market. We are a member of Who’s Who in Luxury Real Estate: a compendium of the finest residential real estate firms and brokers that collectively sells over $300 billion of real estate annually both nationally and internationally.

Community involvement is important to me. I have served on many boards and as a volunteer. I donate a portion of my commission to a local non-profit.

My clients (and their families) typically use my services for every real estate transaction that they consider, or actually engage in. I have been through many housing cycles and look forward to discussing your Real Estate needs with you.

Fionnuala's Featured Sales