Discover Real Estate In

New York City

Start your search Search

ViewFeatured Listings

View All Featured Listings

Featured In

What Clients Are SayingTestimonials

"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... continued"
- Belinda and Gary
"“Karen did a great job helping me to find my first home. As a first-time homebuyer, she helped to guide my research and efforts, helping to alleviate as much stress from the home-buying process as... continued"
- Sabrina
"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... continued"
- Kim
"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... continued"
- Krishna
"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,... continued"
- Brian
"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... continued"
- Vivian & Calvin
View All