Karen and I were co-workers in the finance industry prior to her becoming a realtor.  Choosing her as my realtor for a purchase of a condo in NYC was not a difficult decision, as I knew the quality of her work, albeit in another industry.     I was spot on! I went into the  ... Read more

Karen was the ideal realtor for our needs. We found our beautiful apartment with incredible architectural features in Midtown East after 2.5 days of visits to numerous locations, all happening smoothly and efficiently due to Karen’s expertise. Karen listened to every detail of what we wanted,  ... Read more

I am delighted to be writing this testimonial on behalf of Karen Kostiw. Karen is the perfect real estate agent because of her deep real estate domain expertise, her relentless work ethic, and her genuine compassion and care for her clients. As a first-time homebuyer, it was invaluable to have Karen  ... Read more

As a first-time home/apartment buyer, I was nervous and insecure about jumping into the process. Karen calmed my worries and guided me through the entire process with ease. I was able to trust her implicitly, as she was my greatest advocate - fighting for me to get to see apartments I liked,  ... Read more

Karen was way beyond a professional agent who helped me not only going through all the progress of purchasing a house and was also a friend to me. She could always arrange all the appointments perfectly to match my limited schedules and listened to my preferences and concerns and made  ... Read more

Karen was a very professional, diligent, and overall reliable agent when working through the process of buying my home. As it was a first home for me, there was definitely some hand-holding along the way (which was necessary). I gave her the specs as well as the area(s) I wanted to purchase my  ... Read more

Karen was a great agent for a first time homebuyer in NYC. She helped me go through the process (including coop board approval) extremely quickly, I was in my lovely new apartment in no time. She is very helpful and willing to take a lot work off my shoulders. She also helped negotiate the purchase  ... Read more

Karen is the best! Being new to the buying process, Karen graciously walked me through each step from the beginning to the closing. I wanted to see as many co-ops as I could to get a better understanding of what I wanted with what was available on the market. Karen’s knowledge and experience in  ... Read more

Selling an apartment in the highly competitive NYC market is a challenge. Karen understood our requirements and became our 24/7 person. She guided us through the process of obtaining painting, and floor contractors as well as plumbers, window washers, etc. Karen was with us from the initial showing  ... Read more

Karen was very responsive and helpful throughout the home purchase process for my wife and I. She was readily available to chat when needed, took care of answering our questions (or pointing us in the right direction to another resource where applicable), and helped to keep our best interests in  ... Read more

Karen completely changed my opinion of brokers. She is incredibly professional, mentored us through the process, is formal in a pleasant but warm way, and I'm going to make all of my friends go to her. She was a project manager, negotiator, and a therapist for us every day. Midway through the  ... Read more

Purchasing property in New York City is a tough endeavor, let alone for someone out of town. Having a real estate agent is just not enough to navigate the obstacles that seemingly arise at every corner. In today’s world you need an agent, advisor, mentor and all-around real estate guru to guide you  ... Read more

Karen was absolutely the greatest. It was a difficult time for my family and I, dealing with the passing of my sister. The process of handling her estate was not an easy task especially with traveling back and forth from Atlanta to New York. We needed someone patient and understanding, someone we  ... Read more

In October of 2014, my father was diagnosed with a severe medical condition. He passed away in May 2015. I started looking for options for my mother to deal with her real estate holdings, holdings that she and my father had built up over many years through hard work and perseverance. The true  ... Read more

Karen’s unique background in business and liberal arts distinguishes her from other real estate professionals we have worked with in the Tri-State area in general and Manhattan in particular. In addition to doing all the preparations for the listing, Karen sourced the contractors and personally  ... Read more

Karen is one of the most professional, personable and down to earth real estate agents my husband and I have ever worked with. That says a lot about someone in this cut-throat Manhattan real estate market. She is a breath of fresh air. In our quest for a first home we must have worked with at least  ... Read more

Karen is outstanding! She goes above and beyond the call of duty. Always seeing the big picture. If you have no idea where to start. Karen will set the path and take you carefully and clearly through it till the end. She was and still is in touch with us even after the closing. Every decision we  ... Read more

Karen is the ONLY realtor you should ever consider using. As a real estate developer, I have yet to meet a realtor that exhibits the enthusiasm, attention to detail and, most importantly, professionalism that Karen displays. She treats every listing like it is her own property. Unlike many realtors  ... Read more