Verified record
Leverage Real Estate is a small Quincy brokerage built around John Gambone, who reviewers describe as heavily hands-on — coordinating attorneys, lenders, inspections and even smoke-detector compliance rather than just showing properties. His Massachusetts real estate broker license is verified active. The written record, 17 reviews since 2022, leans heavily toward buyers and sellers who say Gambone explained the process clearly and stayed available throughout. One 2026 buyer credited him with "smart and spot-on" pricing and negotiation advice plus a referral to a lawyer and mortgage contact that made closing smooth; a 2024 seller with an out-of-state, hands-off sale said he handled everything from listing photos to smoke detectors. A handful of reviews also name other agents at the firm — Amanda James and Christie Rioux — with similar praise for responsiveness. One July 2026 review breaks sharply from that pattern: a client called Gambone's advice "surface level" and said he had no real grasp of the market when it came to guidance for the present and future, warning others away. It directly contradicts the market-knowledge praise that runs through the rest of the record, and it's recent enough to be worth asking current clients about before signing on. Confirm which agent at the firm you'd actually be working with, since reviews describe more than one person handling deals under the Leverage name.
Very knowledgeable and experienced. At A tough negotiator. Recommend highly for your real estate needs
John made buying my condo so easy. His advice on selecting the unit, pricing, and negotiation was smart and spot-on. He also referred me a great lawyer and mortgage person, which made the whole process smooth and stress-free. Highly recommend him to anyone buying a home!
John is absolutely terrible at what he does when it comes down to the full picture of what he provides. He seems very experienced and knowledgeable at what he does on a surface level, and he may be in many ways, but when it comes to him actually advising you and giving you the best advice for the present and future, he has absolutely no idea what he's talking about. You would think with all the experience he has, he would have a solid grasp of the real estate market. He does not. Stay away. There are so many other people that really have the pulse of the real estate market, are more well connected than him, and can give you much better advice and actually back it up. This is the difference between below average and above average to great real estate agents in my opinion. His advice and supposed knowledge can really burn you like it has for me.
John is extremely knowledgeable about the real estate process and was professional and responsive throughout. He explained things clearly, answered questions thoroughly, and brought a practical, down-to-earth approach that made complex decisions easier to navigate. I appreciated his insight and experience and would recommend him to anyone looking for guidance in real estate matters.
My real estate attorney recommended Leverage Real Estate, LLC and I am so thankful. John is extremely knowledgeable about the real estate industry and was great to work with. He is very down to earth and funny too! I highly recommend.
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1 change recorded — last scanned Jul 29, 2026.
Wins bidding wars5.0
Long-time repeat clients4.7
Off-market finds4.1
State-verified Real Estate Limited Liability Company (LLC) licenseNot yet rated
Fast closings3.6
Negotiated two months of rent waived by a landlord3.7
First-time buyers3.3