We had an outstanding experience selling our Manhattan apartment thanks to our realtors, Nicole & John. From the very beginning, Nicole kept us informed about market conditions, timing, and strategy so we could list with confidence. Their guidance during negotiations was steady, smart, and incredibly reassuring, and we always felt fully updated every step of the way. The NYC real estate market can be stressful, but they made the entire process feel organized, transparent, and smooth. We are grateful for their expertise and highly recommend them to anyone buying or selling in NYC.

-C. Agu

Nicole made our first home-buying journey in NYC so much easier! The NYC market can be incredibly daunting, but Nicole navigated the complex process with ease. She also connected us with the best mortgage brokers and lawyers who made the process seamless.

If you want someone who is knowledgeable, proactive, and highly connected, we definitely recommend Nicole and John!

-Erin D.

Working with Nicole and John of the Harrison Grandelli Team was an absolute pleasure from start to finish. Their professionalism, local market expertise, and genuine care are remarkable. From the very first meeting to the final closing handshake, I felt confident and informed every step of the way. If you’re looking to buy property in NYC, I highly recommend them. They guided me through the New York real estate jungle with ease and expertise. Truly five-stars to the Harrison Grandelli Team!

-Michael T

The best realtors in town. They worked hard in the middle of a series of rate hikes from the Fed to sell our apartment for a record sale in the complex. I cannot recommend this team enough!

-Daryush N.

In my view, John Harrison is the most honest, hard-working real estate agent in NYC. He is a consummate professional and always goes above the call of duty. John helped us in buying our condo in NYC and later assisted in renting it. He was always there to help us navigate the complex NYC real estate rules and provided appropriate guidance throughout the process. I would highly recommend John as a real estate agent to anyone who is looking to buy, sell or rent a place in NY.

-Bobby W.

The Harrison Grandelli team were fantastic helping us stage and sell our NYC apartment. Will definitely use them again!!

-Jaclyn K.

They were really helpful throughout the process, and they make the whole process very smooth and fast too. The whole communication was very prompt and transparent, and I would strongly recommend to anyone who is on apartment hunt in New York City.

-Yuvraj B..

John and Nicole were wonderful, they make me feel very comfortable and confident from the very beginning to the end.

-Lars J.

There is an experience to be witnessed with this team. Advice, knowledge, and positive perspectives pave a path into unique opportunities. Treated with respect. Valued because they’re professional, affable, and simply put — kind!

-Gregory B.

As someone who was unfamiliar with the NYC real estate market, I found the process of finding an apartment very complex and daunting. Nicole Grandelli and her team at Core Group made everything so much easier and they even got some of the move-in fees waved. I honestly think I would have given up mid-process if it were not for Nicole. Nicole and her team were prompt, honest, transparent and good at communicating throughout the process. Now that we have the apartment, they have been great at answering questions and making sure we have our utilities turned on. I would not hesitate to recommend the Harrison Grandelli Team at Core and will use them again for any future NYC real estate transactions. Thank you!

-Angela B.

Some of the best brokers we've every worked with! Very responsive, organized and easy to work with.

-Mitchell K.

John Harrison and the Harrison Grandelli team are my go-to consultants for all of my real estate investments. Their knowledge of NYC is unsurpassed, and i am always blown away by their customer service. I would highly recommend them to anyone seeking real estate assistance in the city.

-Carol D.

We can't recommend Nicole and her team (Harrison Grandelli Team) highly enough! Over the last four months, they helped us find and purchase our current apartment.

Starting from the initial search phase, one thing about Nicole and her team that we loved is that they never pressured us to buy; instead, they educated us about the market and patiently waited until the perfect place came along.

Once that place did come along, our experience only got better. Nicole was incredibly responsive throughout the whole process—from our first showing until we had the keys. Every message we sent received an immediate, helpful reply.

Finally, her negotiation skills were amazing. Not only did Nicole and her team meet our desired price, but they secured an even better deal than we'd hoped for!

Having previously purchased real estate in NYC, we can confidently say this was our best experience yet. Thank you so much again, Nicole!

-Armstrong P.

Our family chose to work with John and Nicole (Harrison Grandelli Team) and it has been a great and smooth process.

They were very clear about what needed to be prepared for selling the condo unit and we were able to close very quickly. They are detail oriented and hard working. I'd recommend that you work with them when you buy or sell !

-Selin E.

Nicole Grandelli has always treated me with great respect and an understanding of my needs. This is an organization that can be trusted.

-Sami

Their many years of sales in residential real estate in NYC greatly enhances their value. Their superior knowledge of the many desirable New York City neighborhoods streamlines the search, saving much time and money.

-Mark M.

So, where do I start? I live in Massachusetts and I inherited some property in Brooklyn, NY. I struggled to attempt to sell it on my own unsuccessfully. Then while my wife was having breakfast with my daughter at a hotel she ran into John and his family and started discussing our situation. John offered to give us advice with no strings attached, and no pressure to be my agent. Of course, I was suspect, but eventually, through our discussions, I could see John was just trying to help me. I came to trust John and started to work with him on the sale. After taking his advice and taking his direction he took us from a sale that was SIGNIFICANTLY below what I was asking to double what I was looking for. He handled the process of getting the property in a shape that drove interest through the roof. Took care of the showing of the property and negotiated the bidding war on my family’s behalf. He ensured that we received the strongest offer and brought a difficult situation to a wonderful conclusion. I couldn’t have asked for a more professional individual to guide me through this entire process. The one thing that impressed me the most and for anyone reading this review, is I have yet to meet John face-to-face. I have never met John. We conducted this entire process while I was in Massachusetts and he was in New York. John was so honest that I left this entire sale in his hands and I will tell you it was the best thing I ever did. Thanks to him I am currently building a new house and have the finances to pay the entire house off and provide for my family thanks to John. And this all happened because John saw a family in need of some direction and some help that he didn’t know. He didn’t have to help us at all but that tells you about his character as a person. I will forever be in his debt, and if you are considering working with John, trust me, you want John and his team in your corner. Hands down, he will not steer you wrong, and take his advice because it will be the best move you will ever make. Thank you, John, from my entire family.

-M. Johnson

The team at Harrison Grandelli is seriously top-notch.

-Frank T.

We sold our NYC apartment with the Harrison Grandelli Team, they were fantastic. They have the network of a large firm with the responsiveness of a small one, and helped us set a price and timeframe that we achieved! Highly recommended.

-Bradley H.

Nicole and John are incredible to work with. Great communication and attitude at all times.

-Marissa B.

This is one of the best in class real estate teams to work with. They are top notch in every aspect. They have a tremendous amount of experience, they explain every part of the process and will make sure you get great value for what you’re looking for.

-Ron R.

Harrison Grandelli team are true professionals. They know the markets and know where to find value. Totally reliable and responsive.

-Billy J.

John is a very smart and knowledgeable broker who understands the New York market very well. He has guided us through the complexities of a 1031 exchange, explaining things in a very clear way and helping us to find the right people, from mortgage brokers to insurance agents. He was also very helpful to find new tenants and even taking on the role of a superintendent to make their rental start as smooth as possible.

-Markus J.

Very knowledgeable and always available, John Harrison has successfully rented and managed more than a dozen of our rental properties and brokered the profitable acquisition or sale of many other real estate assets. Recommend his services without reservation.

-Selin E.

Very knowledgeable and always available, John Harrison has successfully rented and managed more than a dozen of our rental properties and brokered the profitable acquisition or sale of many other real estate assets. Recommend his services without reservation.

-Mark M.

Working with Nicole to find my first home was a great experience. Nicole did an effective job of hearing my specific needs and translating that into a pretty quick purchase. Nicole is my go-to person with any questions regarding New York City real estate!

-Galin M.

Nicole is a very polished and knowledgeable real estate professional. Her keen sense of luxury and value guided me to the right purchase on my Manhattan property. And she makes it so fun with her great sense of humor. I highly recommend her.

-Bill R.

My husband and I worked with John to sell our co-op in Ditmas Park (Brooklyn). He worked tirelessly to ensure that we received 5-star service. He found us a buyer before the apartment was even posted. He took pictures, conducted the open houses, contacted the tenants to schedule the open houses, and dealt with the doorman and management office from the beginning until the closing date. He did it all. John kept us abreast of everything. He was amazing, professional, and all-around cared about the process as if he was selling his own place. He listened to our concerns and needs and was able to get us a buyer within record time and at an above-asking price. We could not ask for a better real estate agent. John is the best realtor I know and we wholeheartedly recommend him.

-Paul D.

John was incredibly professional, knowledgeable, down-to-earth, and above all else, very honest with the sale of our apartment. His expertise and kind approach really have him stand out in the industry. We highly recommend him for any real estate needs.

-Marissa B

John Harrison is a gentleman who listens closely, pays attention, and is always focused on his clients' needs and desires...and thus remains flexible in his options and advice. He is highly knowledgeable in the realities of the real estate market and tireless in his work and sincere in his communication. John is a pleasure to work with and a pleasure to know.

-Elizabeth M.

I started my home search in Fall 2015 and I was looking in Brooklyn. I currently live in Queens and I do not know the Brooklyn area very well. Before I met John, we had a phone conversation to understand my needs and help me think through the process. He also sent me a comprehensive financial checklist on purchasing a home. John met with me on a Sunday afternoon and selected open houses in different areas of Brooklyn for me to view. He educated me about the neighborhoods, buildings, financial aspects, etc. It was the most thorough real estate professional experience I had been through. When I received an offer in Queens through a friend to purchase his home, John offered to brainstorm with me about the opportunity. Even though John would not financially benefit if I purchased the Queens apartment, he spent an hour looking at the apartment online with me and follow up. I highly recommend John Harrison for his integrity, professional knowledge, and passion for working in the interest of his clients.

-Noreen G.

John is a very well-rounded Broker, who's always looking out for the best interest of his client. He's very knowledgeable about the New York City Real Estate landscape. He's always open about fees and the negotiation process. We're now working on our 3rd corporate apartment together, and it's always a pleasure.

-Carrie T

John worked true magic for my family and me. We put our house on the market while looking for one to purchase, but we’re in a sticky situation in that we absolutely needed to sell ours first. John was extremely knowledgeable about the Real Estate market in our neighborhood and was able to council us thoughtfully without being pushy. He was extremely patient, grew quickly to understand what we were looking for, and found us the home we were looking for. Simultaneously, he sold our home at the rate we needed to make the other transaction happen. We were over the moon and remain extremely grateful. John is professional, friendly, understanding, patient, and extremely knowledgeable.

-Morgan P.

John was extremely helpful in helping us find a home along with the myriad of details including financing and general things to look for when accomplishing this feat. I would trust John over anyone.

-Randall L.

John has helped us find our initial apartment on the UES and then, after a messy situation with the UES Landlord, helped us to relocate to Brooklyn Heights 4 months later. He is patient, professional, kind, thorough, and very knowledgeable. He met us at every location, he helped us to negotiate a lower lease amount, and he put up with numerous calls at all hours of the day - we highly recommend him!

-Michael S.

John Harrison recently handled all aspects of our real estate transaction and we had a great experience. He is knowledgeable, professional, friendly, and made the process stress-free. What separates John from the rest is the time he spent understanding our goals and strategizing with us how to meet them. Additionally, he went above and beyond to prepare our apartment for viewing (arranging cleaning service, painters, furniture removal, etc.) We are extremely happy both with our experience and the relationship we have with John and we highly recommend him

-E Sternn

It was time for a new apartment! I had just given birth to a baby boy and while the baby didn't take up much space, all of his accessories did. John went to work finding an apartment for us. Luckily we had a flexible move-out date because John found an apartment that was a short sale. Short sale purchases are more complicated than normal sales and John carefully explained each step along the way. He was very patient when I had questions or concerns and always made sure my questions were answered in a way that made sense to me. John was personable, professional, knowledgeable and an excellent negotiator. He saved us over $100,000!

-Christina H.

John Harrison is the ultimate professional. When I needed to rent out my NYC 5th Avenue Apt. I went to him and the 1st couple that walked into my home, took it... no questions asked... not even did they try to bargain the price John and I agreed upon. When they moved out 2 years later, John took it into his own hands and made sure that everything ended perfectly well for both my tenants and I... hard to find that these days. I highly recommend him to anybody looking to Buy or Rent a Home or Sell or Rent out their property in New York City. This man is a true gentleman, knows his game well... not to mention an excellent family man and a great friend that he has now become of mine. If I had to come up with one word to describe John Harrison that would be TRUSTING.

-Mel G.

John sold my apartment in 2013 we had several offers on the table and we were able to get the full asking price. John is very knowledgeable in what he does, he listens to the client’s needs and puts in perspective what was best for me, and most important he delivers.

-Oscar C.

Wow! I can't say enough wonderful things about our experience with John Harrison. Right after my husband and I got married, we were looking for a new apartment to call home and John made that happen. He took all of our criteria and budget into account, only showing us apartments that he knew would meet all of our needs. None of this running all over the city to look at places that would just be wasting our time. He was organized, knowledgeable, efficient, professional, QUICK to return emails/calls/texts, really listened to what we wanted, and was an overall joy to work with. I would recommend him to any of my friends or family looking for a spot in New York. He's absolutely the best there is!

-Casey S.

John is THE BEST! I have had my share of experiences with a variety of brokers.. male, female, sellers, buyers, younger and more current, older and more experienced, and far and away on all counts, John is awesome. I cannot speak his praises enough. He was helpful throughout the process on a professional level in his capacity as my realtor, and on a personal level addressing my needs as I parted with my beloved apartment. He is smart and skillful in his approach and was amazingly personable to me and all parties involved in a potential deal. Not to mention I had one particularly difficult situation, and he handled it with ease and grace. I hope this review isn't shrugged off as too positive, but I truly have nothing negative to say.

-Chloe M.

After meeting with three brokers, John included, it was a clear choice that John was who I wanted to work with to sell my condo. John came to the initial meeting well-prepared with market data and having considered specifically my unit and building. Not only did he provide updated knowledge of the market, but also he listened carefully to my goals as he assisted me in determining whether to hold or sell my apartment. Once I determined I would sell, John marketed my unit extremely well and when it was listed there was excellent activity very soon. John was detail-oriented and conscientious consistently throughout the process right to the closing. I relocated before my apartment was sold and John stepped in making sure my apartment was ready for the open houses and secure. John operates with a high level of integrity and professionalism and it is a pleasure to work with him.

-Suzanne H

John Harrison has a passion for Real Estate. He knows NYC and understands the ever-evolving real estate market that is NYC. John has his finger on the pulse of what is going to be the next hot neighborhood or the best buy for the first-time buyer or the seasoned investor .. He cares deeply about his clients and I have never met a more honest and hardworking broker in my 14 years of living in NYC. John has helped me and my family through multiple real estate scenarios and apartment shopping all over NYC. Each experience with him has made us excited for the next time we can work with him as a broker who will go above and beyond the call of duty to get the job done with a unique approach. Thanks, John for all you do!

-Patrick E.

John was an absolute delight to deal with. He walked me through a somewhat complicated purchase seamlessly and was always available to offer honest and sage advice. I would and have recommended him to friends without hesitation.

-Baz C.

John provided me 5-star service even though my budget was very tight and the process was like looking for a needle in a haystack. While most other agents I worked with through the process put me at the bottom of their list, I never felt like that with John. He was proactive to get the info needed to best negotiate, educated me at every step of the way, and patiently worked with my verbal processing style as I figured out an initial offer (great devil's advocate). John developed great relationships with the seller's brokers wherever we went. I was also able to count on John to refer me to lawyers and other providers that delivered the same high-quality service. I'm very excited about my purchase!

-Sandra Z.

I’ve benefited from John Harrison’s very able navigation through multiple real estate transactions, and there is no one I’d rather have in my corner. Here are a few reasons why I say that:

Knowledge and real estate skills-John is a student of all things real estate, has a passion for the market, and his clients regularly benefit from his knowledge, forged by experience and ongoing training, of best practices, market developments, and pitfalls to avoid.

Strong representation/negotiation skills and commitment-John works tirelessly to understand and take action on his client’s needs and desires, keeping those interests front of mind. His ability to think on his feet when needed, even in the heat of the moment is uncommon. I’ve always felt at rest and confident knowing John has my back.

Communication and Intelligence John has regularly distilled complicated real estate requirements and situations into readily understandable concepts for me, giving me peace of mind at every turn.

Integrity and Service-I’ve never had to question John’s commitment to do the right thing, and his desire to add ongoing value, even years after (or before!) a transaction is remarkable. John has generously given of his time and effort on my behalf, even when there is no financial benefit for him.

-Jerry B.

John Harrison and his team helped my family and I with multiple rental and the purchase of our apartment with such professionalism and efficiency. It has always been a pleasure to work with him.

He has made it extremely easy for us to find the perfect tenants in a short time. I highly recommend his service to anyone looking to move to NYC.

-Victor T.

I highly recommend John Harrison! He sold my Manhattan co-op apartment during the worst pandemic period at my asking price. He put so much effort and work into it. He was very responsible, responsive and reliable.

When trouble happened, he helped me figure it out and get thru it without too much stress. I will definitely work with him again when I will sell my next apartment. You won't be disappointed!

-Sazzie Z.

John worked tirelessly to find us the perfect location. He and his team know the market, genuinely care about their clients and make the process of finding space in NYC completely seamless. If you are looking for a team that is focused you and your goals, there is no better choice in NYC real estate!

-Dawn P.

Whether Selling or Purchasing a home or considering a new development I would not hesitate to consider John Harrison and the Harrison Grandelli Team to represent you as your Realtor in New York City. I know John from a professional relationship, we speak every week and he is always the consummate professional, knowledgable, and extremely sophisticated in his approach to clients and the New York City selling process. If you are considering purchasing or selling a property in New York city would be worth your time to interview John to see if he is the right match for your clients.

-Charles L.

I have known John Harrison for long time and he has always been a person that will deliver more value than he takes. He's so knowledgable in the New York real estate market and the in's and out of the community. If you're looking for a true professional and a real estate advisor that will guide you through the process of buying or selling a home, he's your guy. Not only is he incredibly intelligent, he an amazing human being. He will treat you with respect and make sure that you really takes care of you. Your goals are his goals and that's the kind of person that you want in your corner when you're making such a big decision in your life. I highly recommend John Harrison if you're looking for an exceptional real estate agent in the New York area.

-Chris K.

I highly recommend John Harrison and the Harrison Grandelli team to anyone who wants to sell or buy real estate in New York City. They are trustworthy, solution oriented, and committed to navigating their clients successfully through even the most complex transactions. If you want a real estate broker who is professional, knowledgeable and creative, John is the one for you!

Marie G.

I had a wonderful experience with Nicole Grandelli and her team at Core. Always available to answer any questions or concerns, Nicole was helpful, professional and an absolute pleasure to navigate the Manhattan & Brooklyn real estate landscape. Her inside knowledge really helped me understand my options and I can't overstate how much I enjoyed her company throughout the whole experience . I felt very lucky to have Nicole by my side.

-A. Wright

It's a tough time to be selling in NYC, but I chose to, and John made that happen quickly (2 months!) and for a fair price. He and his team put their all into it, and went out of their way to accommodate the prospective buyer. Experienced but far from jaded, the Harrison Grandelli Team is a winner in my book!

-Nancy H. 

I’ve known Nicole Grandelli for many years and she has become my trusted real estate advisor. She is incredibly knowledgeable about the New York City real estate market and understands how to capitalize on it. I highly recommend the Harrison Grandelli Team.

-Rob T.

John was my first and only NY realtor. I don’t know if he’s as good of a realtor as he is a person, but it’s probably very close. Awesome individual who will definitely put your interests above anyone else’s, and knows as much as anyone in the business about NY real estate. Excellent team player!

-Stuart S.

If you are looking for someone with integrity, an incredible work ethic, and someone who can bring it when it comes to helping you find your next property or sell your current property, John Harrison is your guy! I have referred him dozens of times and he always comes through!

-James L.

John is great to work with! He has always been completely available and I look forward to continuing our relationship!!

-Joseph G.

I have no doubt you will be happy working with this team of professionals. John understands the importance of finding the right home for your family.

Nancy M.

The best in the business

-Mathias V.L.

Having recently relocated from Switzerland to New York City, I was fortunate to be introduced to Hannan and the HGT team through a friend. Despite the reputation of NYC being a challenging place to find housing, my experience has been quite the opposite. Hannan proved to be an exceptional broker, demonstrating kindness, support, and utmost professionalism throughout the process. I wholeheartedly endorse her and the entire team for anyone navigating the NYC housing market.

-Gabriela P.

Hannan, John, and Nicole were a pleasure to work with as they helped walk me through the process of purchasing my first home in Brooklyn, NY. I'd recommend the Harrison Grandelli Team to anyone looking for a home in the New York City area.

-John K.

Parents Perspective - We joined my daughter to view potential properties as she's making the move to NYC from Atlanta. We worked with Hannan on the recommendation of a friend also from Atlanta. Hannan sent the initial properties prior to our arrival and updated each day while we were in the city. Quickly zeroed in on our interests and musts. New listings coming over at close to midnight each evening - needless to say she worked tirelessly. She exceeded ALL of our expectations. Also her customer facing skills are exceptional and paralleled by her market expertise. We had a great experience as a result of her friendly approach to out of towners and her professionalism! If want representation with high skills, energy and integrity you want to call Hannan - Thanks again Hannan, we couldn't be happier!!!

-Daniel T.

Working with this team, Hannan in particular, was a pleasure. Their level of professionalism and transparency is unparalleled! Hannan patiently listened to our list of asks, put together a compelling list of apartments to visit and guided us during negotiations. We are now excitedly waiting to move into our perfect place! If you’re dreading navigating the NYC real estate market, highly recommend you do yourself a favor and give them a call!

-Ezana D.

Hannan, John, Nicole and The Harrison Grandelli Team helped me find my first home to purchase in Brooklyn, New York. Hannah has been extremely hands on and attentive, really listening to the things that I want and gave really honest feedback about the places we've visited. John is also extremely knowledgeable and gave very insightful advice and tips about things to look out for, which gave me the confidence that I'm making the right decision. The team is very on top of things and worked very hard in the background, even making several strategic suggestions to guarantee that the deal closes smoothly within my timeline. It's the team's attention to detail and care for their client (we still keep in touch even months after closing!) that really sells it and I would recommend working with them to anyone.

-Terrance L.

The HGT Team is simply the best! Hannan and Nicole were beyond fabulous and I would highly recommend them.

-Christine C. 

Worked with Hannan and HGT, wonderful experience. Finding a new home in NYC is no easy feat, and Hannan was great about finding listings that fit my requirements. Highly recommend!

-Ambreen W.

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Hannan, Nicole & The Harrison Grandelli Team helped me find my new home in NYC. They were incredibly helpful and responsive, making the entire process easy and stress-free (which isn’t usually the case in finding a place in NYC)! So grateful to have met them.

-Soorin L. 

I worked with Hannan over the course of a month to find a rental unit in NYC, and during that time she was prompt, professional, responsive, kind and above all—she put the needs of her client first. She is FULL of integrity-worth its weight in gold when navigating real estate in NYC-and she is a strong advocate for her clients. I cannot recommend her highly enough for helping you to find your dream home!

-Samantha L.

Hannan helped us find an amazing new first NYC home. She was very professional and the helped us find the exact unit we were in search for.

-Vasili M.

Hannan was a great partner to work with in the overwhelming experience of apartment hunting in the city. She managed to work with my busy schedule to find a place that met my needs and was within budget. She worked diligently to get me a home in the location that I wanted and was suitable for my lifestyle. I would highly recommend her to anyone navigating the process of finding a home in the city.

-Zainab H.

Hannan Salah was amazing at helping me find a new home in new york city. We went through all of queens and brooklyn together and hannan was able to coordinate all of that for me. I'm particularly picky and Hannan and the Harrison Grandelli team were able to coordinate with that to find my dream apartment in NYC. Thank you so much! You guys rule :)

-Sami

Can’t say enough amazing things about Hannan Salah! An amazing broker who will work tirelessly until you find YOUR dream home. No question you ask is too silly and she makes sure to calm you down when you get anxious. She knows NYC in and out and is a true professional. Be sure to reach out to her the next time you’re looking to rent or buy in NYC! You won’t regret it!

-Norman M.