Halle Costello

Meet Halle

Client Support

Halle Costello provides essential operational support and client assistance to ensure a seamless real estate experience at Tribeca NW Real Estate.

King County

Seattle, vibrant neighborhoods, and a mix of urban energy and Puget Sound views.

Let’s Start Exploring

With a Local Expert You Can Trust

Moving to a new area? Buying or investing? Our easy-to-read guides give you the local insight and practical tips to help you choose with confidence.

Our freshly handpicked properties

New to the market

Explore the newest listings before anyone else. From small escapes to grand estates, find your next home among the freshest properties on the market.

Success Stories

Hundreds of satisfied clients

"Linda was awesome. Easy to work with and she was well informed!! If I ever need a real estate person I will call her again!!!"

"Kevin was incredible! It was the first time my husband and I ever purchased a home which can be so overwhelming, but he helped make the experience easier. I really want to thank Ke… Read MoreRead Less

"Jeff was a wonderful help in finding our new home. He was always encouraging during house tours and gave us great insights into the market. He was always extremely responsive to an… Read MoreRead Less

"Kevin Escobar with Tribeca was our realtor, and my wife and I had an amazing experience working with him! We were initially looking at houses on our own when we unexpectedly met K… Read MoreRead Less

"Working with Ashley and Tribeca NW Real Estate was an AMAZING experience. Buying a home always has its opportunities, but having Ashley by our side made the whole process very easy… Read MoreRead Less

"Kevin made our first home buying experience incredibly low stress and peaceful. He was very patient when we didn't find what we were looking for and also deliberate and thoughtful … Read MoreRead Less

"Yes so Krystina was incredible through out this process! I mean big time on that one aye. I didn’t think we would get through it, but Krystina got it done."

"Rick has been exceptional in helping us look at riverfront properties in the PNW. It’s been a challenge since we live in another state but he has always looked out for us and been … Read MoreRead Less

Get in Touch

Meet Halle

King County

With a Local Expert You Can Trust

New to the market

Success Stories

Making moves? I’m here to help.

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Buyers

Sellers