Costanza helped me sell a condo in Agoura that belonged to my late sister, as I am the successor trustee of her trust. Costanza’s extensive network, negotiating skills and understanding of the market enabled me to sell the property quickly for a good price. She is super responsive and an extremely hard worker. She also listed another property in Chatsworth that belonged to the same trust, and created a bidding war resulting in the trust receiving a great price for the property, despite it having significant deferred maintenance.

I had a great experience working with Costanza to sell my house. She was professional, responsive, and guided me through every step of the process. She priced the home well, helped with staging and marketing, and got us a strong offer quickly. I really appreciated their clear communication and honesty throughout. I’d definitely recommend her to anyone looking to sell their home.

Costanza exceeded all our expectations. She was an absolute joy to work with throughout the sale of my home. Her communication was clear and consistent every step of the way. We trusted her advice on which home improvements to make before listing, and she was spot on. She also connected us with a fantastic list of contractors, all of whom were professional and easy to work with. Thanks to Costanza’s understanding of the market and strategic pricing, we received multiple offers almost immediately—and ultimately sold for above asking. I highly recommend Costanza and Y Realty to anyone thinking about selling their home.

I am a trustee of a family trust that owns two pieces of property in southern CA. I live in the Bay Area so I interviewed eight agents in Southern CA to choose the best one to represent the Trust in selling the properties. The first property sold and was closed two and a half weeks after we chose Costanza Genoese Zirby to represent us. Costanza is a great negotiator; she jumped right into the marketing and we got nine offers and countered seven of them. She then made spreadsheet helping me compare the competing offers so I could select the best one. The second property is going on the market in about two weeks because the beneficiaries of the trust had to remove personal property from the condo before it could be shown. Costanza is a great problem solver and I would use her services again if I needed to do a residential real estate transaction in southern CA,

Great help and strong support bring us a pleasant experience of purchasing property.

Costanza is very knowledgeable with the real estate market and worked hard as our selling agent. She listened to what we wanted and made great suggestions which guided us through a profitable sale. Costanza’s integrity and work ethic is impressive. We were not just a sale, we were her clients. Her attention to detail resulted in a quick sale.

Thank you Costanza for all your help in selling our Mom's house in Westchester. You anticipated every detail and explained everything which helped make a smooth easy transaction resulting in us reaching our goals with a wonderful buyer. We appreciated your humor and enjoyed working with you.

The biggest compliment that I can pay Costanza is that I would without hesitation recommend her services to my friends! Costanza really tailored the home selling process to our needs and managed the entire process with professionalism and sensitivity to our unique situation. Smart, experienced, responsive, and straightforward. I look forward to buying my next home with Costanza and her team.

Thank you so much. You are the best!!

Costanza is beyond excellent. It’s no wonder she is in the top 1% nationwide. She is knowledgeable, experienced and a tough as nails negotiator. My California sale and out of state purchase was smooth and easy, thanks to Costanza and her suppprt. I would recommend her to anyone buying or selling a home.

Costanza is the absolute best! She expertly guided me through a difficult closing and provided invaluable advice all along the way to a successful purchase. She’s also just an absolute delight all around! I would (and will!) recommend her to all my friends.

I can’t say enough great things about Costanza G Zerbi! From start to finish, Costanza made the home buying/selling process smooth, stress-free, and enjoyable. Costanza is incredibly knowledgeable about the market, always available to answer questions, and truly goes above and beyond for her clients.