Fionnuala O’Sullivan

She guided us through the grueling process with lenders, even negotiated with the builders on a few items, until our dream house was finally ours. She is smart, fun and wears snazzy hats and shoes. With her, even our kids enjoyed house hunting (and that’s saying a lot!) We’re so thankful to have found her.


Fionnuala's Current Listings

3027 S Nevada 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.

Experience- I have been in this industry for almost two decades. Buying or selling a home is a huge financial decision and I have a breadth of knowledge that I will put to work for you.

My client list is largely referral based and I am always happy to discuss your real estate needs! Thank you to all my clients who have been part of this success.

Fionnuala's Featured Sales