Service Areas
About Chase Costello
Credentials
LICENSE
Awards
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2026
TOP AGENT
Renton, WA
2026
TOP AGENT
Issaquah, WA
2026
TOP AGENT
Bellevue, WA
2026
Renton, WA
2026
Issaquah, WA
2026
Bellevue, WA
did a fantastic job guiding me through the entire process. They took the time to clearly explain every step and patiently answered all my questions, no matter how small. Their support and knowledge made the experience smooth and much less stressful. I truly appreciated their professionalism and dedication every step of the way.
Chase was fantastic to work with! His local knowledge and expertise made the home-buying process smooth and stress-free. He was incredibly patient, answering all our questions clearly, and his negotiation skills ensured we got a great deal. Highly recommend Chase for anyone looking to buy or sell a home!
Chase was a fantastic resource to us as first time homebuyers. He was very patient with his time, generous with advice, and personable and responsive. We ended up closing without issues and are happy with our wonderful new home!
We are very thrilled to have purchased the house that is just right for us and Randy played a key role in this journey. We were looking for a few very specific things. For some reason, houses that checks all the boxes are somewhat rare, especially at our price point. Randy looked at countless of houses with us almost every weekend over the course of a few month. Randy showed us a few neighborhood he thought would be good fits for us. With his knowledge of surrounding suburbs of Seattle we were able to quickly narrow down to 2-3 specific neighborhoods. Randy has always been very patient with us and have been very supportive of us getting the house that is right for us instead of rushing us into something very close but not quite checking every single box. He was very communicative and always reply call / text / email within minutes. At the end we found the house we want. We were able to make just the right offer and got the house after 1 week on the market. From there, thanks to Randy's coordination, we were able to close on the house in a record speed of 20 days. After 1 month of living here, I am sure that the price we paid is about $100k - $200k lower than the sold prices of comparable houses nearby (South Bellevue). We'd like to thank Randy for this incredible journey and would recommend working with him on your next house hunt.
We met Chase when the market entered the rollercoaster state, in which normal rules do not apply - so our opinion might be a bit subjective to the situation. We appreciated his patience in giving us directions and explaining rules of the game as the first time homebuyers. Chase never pushed us in any deal and always considered our interests, he also gave us space when it was reasonable and necessary. His advices we were always spot on as well. At the end - we got the house that we wanted, so huge thanks to him for helping us!
I know these reviews are vital to house hunters and house sellers. I use them. I have interacted with Windermere for more than 40 years as well as other real estate companies in the Puget Sound Area. Over the years, Windermere has seemed smarter and more precise, and their databases seemed more up to date. Our near-term objective was to sell our home at the pinnacle of the housing market before the floor of the market dropped.We hired Gary Mogg, a member of Windermeres Costello Team ~ a group of agents and assistants that bring to the table a 3D view of the Puget Sound housing market and, likewise, a 3D process of selling homes in that market. We needed to know what our house could reasonably sell for in this market. We found Gary to be candid.Gary was energized from the moment he walked into our house. He was focused on what elements of our house he could easily sell and what might be tough. To us he seemed very informed about how buyers think in this market. Gary made direct eye contact, he was spontaneous and unfiltered with his opinions, and he presented facts. Gary gave us a tour of our house from a buyers point of view; we heard things we liked and things that were disappointing. He estimated we could get $1M. We interviewed other agents who gave us numbers up to $1.25M. We signed up with Gary because his ideas appeared better thought out than other agents, his approach to selling seemed to us more creative, and he spoke to us about the integrity and ethical process of his methods.Gary organized staging, photography, and even the assistance of a handyman to fix a few things. His team covered the cost of those things. Gary was clear that in his opinion we needed to completely empty the house before his team should stage the house ~ he found us movers who could do the moving within a week! On the specific day that Gary thought would be best to go on the market, we were there. He orchestrated everything for us; we cooperated and followed his lead. Just before going on the MLS, he recommended we raise the price to $1.12M, which we did. In eight days, our home sold for $1.12M.Gary was terrific to work with. Everything he told us he would do he did. He talked to us almost every single day. He took our calls at all hours. I never felt placated. He was candid. We needed that.
Chase did an overall excellent job and made the process as easy as possible. Great rapport and very much cares about his clients. From researching the home, inspections, and dealing with a private seller, he did amazing. It was complex. Big kudos!
He got us top dollar for selling our house! Chase came to us in a very professional manner and let us know what we had to do to sell our house for the best price. He gave us a timeline to be moved out based on the market and upcoming holidays and recommended some work that could help it sell. His team accomplished getting our house on the market the weekend before 4th of July while he was on vacation. We reviewed offers the following week after he already negotiated for us. There were no bad surprises but plenty of great ones!I only ranked 1 category lower than 5 stars with a 4. That was responsiveness. When he was on vacation there was about a 1 day delay to connect with his assistant when we had a question. It wasn't a critical item we felt the need to call him on vacation but we would have liked a list of backup contacts. As I'm writing this I found that those contacts are available in the Costello Team Zillow page but not the main team website. Overall it was a fantastic experience with Chase and his team
Chase did an amazing job navigating the competitive market to help us secure the purchase of our home. His level of expertise and professionalism were much appreciated and instrumental. We would absolutely recommend his services and would most definitely use him in the future if necessary.
Chase and his team were invaluable in the process of selling our home. Their attention to detail, knowledge of the market, and excellent communication skills made the project an overwhelming success. Noell Sansom went above and beyond in helping us with every single detail from the improvement projects to the staging to the advertising. Her energy and enthusiasm were incredible and sales strategy proved to be right on every front!
Chase was fantastic to work with. As a first time home buyer I was so happy that he took the time to explain the whole process to my wife and I. The housing market is so difficult right now, and he did a great job at setting our expectations and walking us through what the buying process would be like. I would 10/10 work with Chase again. He is detail oriented, laser focused on his clients, and very responsive!
We worked with Chase both for the purchase of our new home and sale of our current home. What I can say, he's definitely a pro, no wonder a few of our friends have worked with Chase already. He is positive, friendly, always straight to the point and extremely knowledgeable. Chase helped us find and make the right offer on our new dream home (which is pretty challenging in the new normal of the real estate market), he organized a trendy home staging in order to present our current home the best way, he worked his negotiation magic and was responsive all the time. Chase never pushed us to make a decision, but would always lay out all the facts (honestly, thats exactly what we needed), and it helped us move forward more confidently in each situation. We were in good hands. Chase is truly fascinated about his job and I think this is one of the keys to his success in the real estate business. Working with Chase has been a breeze and we definitely highly recommend him!
We have the highest regard for Chase Costello. He recently was our agent in the selling of our home in Snoqulamie, Washington. He is professional, knowledgeable about current market conditions, responsive in communicating, and most importantly to us, very kind. We felt at ease moving out of state and leaving our home in his most capable hands. He went above and beyond helping us with details small and large. We are very grateful for his expertise and attention to details. We give him our highest recommendation to anyone needing the services of a top notch real estate agent. Thank you so much Chase, for all of your help.
Chase was our buyer's agent and we had a great experience. He is incredibly knowledgeable and on top of things. Chase is quick to reply, he is transparent and honest, and you can fully rely on him to get the job done right. Our purchase had some hiccups along the way though Chase went above and beyond to make it quick and smooth. We highly recommend Chase and would absolutely work with him again in the future if needed!
Chase was great to work with. Very knowledgeable and friendly. Made the process of selling our home seamless. Would definitely recommend Chase. He has a great attitude and while very professional, he has a great sense of humor and friendliness. He was available to us for any questions.
Chase worked both the purchase of our new home and the sale of our current home. He was extremely easy to work with and made the entire process simple for us. Kept us informed throughout the entire process. Would highly recommend the Costello team for any thing real estate related.Very much enjoyed working with his team
Chase Costello was referred to my fiancA(C) and I after we relocated to Seattle from Louisiana. The thought of having to find a home in a new city seemed daunting. We knew nothing about the Seattle neighborhoods or its housing market. However, Chase made the experience enjoyable and approachable. From the start, Chase was a pleasure to work with, always available to answer our questions, and had our best interests in mind. After living in a Seattle apartment for five months we reached out to meet with Chase. We told him that we were not ready to purchase a home for another several months. Despite not being ready at that time to buy, Chase gladly took us to open houses and gave us tours of our top neighborhoods. When we were ready to make an offer on a home, he did a brilliant job negotiating for us! Thanks to him we found and bought our perfect home in our top neighborhood in our new city! If anyone is looking for a knowledgable agent that truly cares about his clients -- Chase is the guy! Cannot say enough great things!
First time home buyers, and we couldnt be happier working with Chase! Checked in on us and helped us every step of the way. Super responsive and easy to communicate with! Will definitely come back
Chase was wonderful to work with in buying my first Seattle home. I was referred to him by an agent in Eastern WA, and started working with him early in the process. I found his team's website to be a great way to look at properties at my own pace and as they became available. When I found the one I wanted to see, he was able to get us in immediately for a showing. He's very responsive by phone, email, and text and I'd absolutely work with him again.
I was very impressed with her consistency to provide us the time and knowledge. She accommodated our schedule as well when we needed to look at homes regardless we were ready to buy or not. She initially helped in finding a rental for three years so her patience's was great. I would highly recommend her
When we decided to sell and make a cross-country move, we were overwhelmed with all the details that had to be sorted out. The timing on selling our house was critical, and we needed someone we could trust to get it done. A friend of mine recommended Chase and Maria, saying they worked very hard for them in purchasing their home in a very competitive sellers market a couple years back. Chase and Maria made me feel very comfortable, listening carefully to what we were trying to accomplish, and sharing the details of the strategy they thought would work best. Our house sold in a difficult market, very quickly, and for a price we were very happy with. They even put us in touch with a partner in our new state, whom they coordinated with to make sure our transition went smoothly; and it did, from staging, to open house, and even a complex contingent-buyer situation. I would absolutely recommend Team Costello.
Noell, was tireless in my search to find my home. She did not hesitate to make time to go look at properties when they came up. She was diligent in doing the research around comps and making sure the ...
I had the pleasure of Noell being my Realestate Agent and she is truly one of a kind and forever grateful to her for helping me find and own my 1st home which is a dream come true. She is very real, confident, ...
Our home search was for a vacation property with the participation of a several family members. The search covered some 18 properties in the winter, often requiring long treks through snow to see vacation ...
Great to work with and very helpful. We sold our home in less than 30 days for $35,000 over what we asked for. We both really enjoyed working with Chase and his team
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