Fionnuala O'Sullivan

Thorough, thoughtful and tenacity — the three words that describe Fionnuala. Our experience far exceeded expectations as the house was on the market, sold and closed within 2 weeks. No details not double checked with an endless amount of patience for our questions. Willing to be frank and did not soft peddle potential risks. Would absolutely use her as my agent again and highly recommend her. 

Khwil J.

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Fionnuala O'Sullivan

Fionnuala O’Sullivan

Managing Broker | Branch Manager


[email protected]

Today’s Real Estate market is fast moving and complex!

Choose to work with a professional Realtor with a proven track record.

BACKGROUND Born in Zambia, and raised in Ireland, I have been a Seattle resident since the early 1990s. Since 1999, I have been a full time, professional broker and Realtor.

My past experience as an owner and the Designated Broker of GBK Realtors – an independent, full service company considered to be one of Seattle’s most successful brokerages – has contributed enormously to my expertise and afforded me a breadth of knowledge in what is sometimes a baffling market!

In early 2020, GBK partnered with COMPASS – a company that offers best-in-class-technology, unique programs like COMPASS Concierge, and top notch marketing.

BOUTIQUE SERVICE 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.

TRUST 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.

GIVING BACK 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