Kelly Catallo

Kelly Catallo

Owner / Broker / REALTOR® at Realty ONE Group Cosmopolitan
MA Broker: 9049448
  •   5   (42 reviews)

Kelly's sales performance at a glance

See how Kelly has performed in the last 12 months on RateMyAgent*

5
Reviews
10
Properties for sale
10
Sold properties
$673k
Average sale price
$6.7m
Total sales value

*Includes all properties sold (last 12 months) as lead and supporting agent and published on ratemyagent.com. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

  • priceExpertbadge

    Consistently meets client expectations for property purchase price.

About Kelly

Introducing Kelly Catallo, the dynamic Owner, Broker, and REALTOR® driving real estate success in Middlesex County, Massachusetts, including vibrant cities like Medford, Malden, and Arlington since 1992. With an impressive 5-star rating , Kelly's reputation for excellence is well-deserved. Kelly is the broker/owner of Realty ONE Group Cosmopolitan and the team lead of The CATALLO Team. She is a visionary with exemplary skill in bringing people together to achieve a common goal. Kelly brings a wealth of experience and a personalized approach to each transaction. Her deep understanding of the Greater Boston real estate landscape, combined with her commitment to client satisfaction, means she's ready to guide you through every step of the buying or selling process. Kelly's passion for helping individuals find their perfect home is palpable. Her proactive approach, market knowledge, and dedication make her the go-to real estate expert in Middlesex County. Whether you're searching for a family home or a unique investment opportunity, Kelly Catallo provides the insight and service you need for a seamless real estate experience.

Kelly's reviews

  5  
Kelly has 42 reviewsacross 16 different locations, showing 6.
Review Kelly
Kelly's qualities as told by our client reviews: great negotiation, stress-free process, reliable, responsive, detail-oriented, supportive, local expert.
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Seller review
Kelly is excellent and knowledgeable on real estate and communication skills is five stars .
about 24 hours ago
Kelly is excellent and knowledgeable on real estate and communication skills is five stars .

Kelly has been in this business since 1992, when I bought my place since then I always reach out to her for RE rentals for past 6 years and with her experience and knowledge have make things move spontaneously and comfortable to evaluate and rent. She is priority on my list for any purchase, Sales and renting of residential property Etc.

Buyer review
A Trusted Partner for Every Step of Our Real Estate Journey
4 months ago
A Trusted Partner for Every Step of Our Real Estate Journey

We truly can’t recommend Kelly highly enough. Our relationship with Kelly goes back five or six years, starting with her helping us find our first rental apartment in Medford. From day one, she stood out for how well she listened, how knowledgeable she was, and how easy she made the whole process feel. Since then, Kelly has been part of some major milestones for us. She helped us become homeowners in the North Shore area, and what impressed us most was how deeply she understood what we were looking for - not just a house, but a place that would truly feel like home. Her market insight, strong network, and thoughtful guidance made a huge difference, especially in competitive situations. Most recently, she supported us in purchasing an investment condo in Lynn, MA. Once again, her strategy, responsiveness, and confidence at the negotiation table were invaluable. Having Kelly represent us always feels like a real advantage, she’s sharp, well-prepared, and always looking out for our best interests. Overall, Kelly’s style, market knowledge, and presence make her a true pleasure to work with. She brings a rare mix of professionalism and warmth, and we feel incredibly lucky to have had her by our side through so many important decisions. If you’re looking for someone you can truly trust in real estate, Kelly is it.

Seller review
Above and Beyond
5 months ago
Above and Beyond

After a long and sometimes challenging real estate journey, I cannot say enough positive things about Kelly Catallo from Cosmopolitan Realty. From start to finish, Kelly was dedicated, professional, and worked extremely hard to ensure the transaction was completed within the required timeframe. She went above and beyond, working closely with the state and attorneys to keep the process moving forward and to resolve every obstacle that arose. Her persistence, attention to detail, and commitment truly made the difference in successfully closing this deal. I am incredibly grateful to Kelly and her entire team for their outstanding effort and support. Their expertise and dedication made what could have been a stressful experience a smooth and successful one. I highly recommend Kelly Catallo and Cosmopolitan Realty to anyone looking for a reliable and hardworking real estate professional.

Seller review
The best of the best
8 months ago
The best of the best

Even though it was a difficult situation, Kelly and her team came through with flying colors! Kelly’s skill and professionalism enabled her to find just the right tenants even though there was much adversity. Did I mention that I am a repeat client? Thanks again for another great experience, Kelly!

Seller review
Market Knowledge
over 1 year ago
Market Knowledge

Kelly, was outstanding to work with!!! Kelly was able to manage the sale of the property in addition to dealing family personalities and different family opinions through the process. If you want the best sale price for your house you should hire Kelly. If you want a realtor available 24/7 to answer your questions Kelly is the one to hire. Kelly was extremely professional, and diligent durning the process.

Show all 42 reviews
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Kelly's properties

Kelly has 10 properties for sale and sold 11 properties in the last 12 months, showing 4, sorted by most recent activity

SoldApr 22, 2026
$1,950
4/15 Arizona Terrace
Arlington MA 02474
1
1
Condo
Listing courtesy of Realty ONE Group Cosmopolitan | Medford
SoldFeb 9, 2026
SoldDec 14, 2025
$1,188,000
12 Wellesley Street
Medford MA 02155
4
5
Multi-Family
Listing courtesy of Realty ONE Group Cosmopolitan
SoldDec 7, 2025
$334,900
300 Lynn Shore Drive
Lynn MA 01902
3
1
Condo
Listing courtesy of Realty ONE Group Cosmopolitan
Show all 21 properties

Kelly's sold properties

Kelly has sold 11 properties in the past 12 months, showing 4.

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Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
4/15 Arizona Terrace, Arlington, MA, 02474
4/15 Arizona Terrace
Arlington MA 02474
1
1
Condo$1,950Apr 22, 2026
1/298 Fellsway West
Medford MA 02155
Other$2,500Feb 9, 2026
12 Wellesley Street, Medford, MA, 02155
12 Wellesley Street
Medford MA 02155
4
5
propertyTypes.multi-family$1,188,000Dec 14, 2025
300 Lynn Shore Drive, Lynn, MA, 01902
300 Lynn Shore Drive
Lynn MA 01902
3
1
Condo$334,900Dec 7, 2025

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