About
WHO WE ARE
The Greystone Group is operated full service real estate, property management and development company with a presence throughout New England. The Greystone Group possesses over 50 years of experience in the many aspects of real estate.
The Greystone Group ranges from buying/selling commercial real estate, leasing, development, and property management. Real estate assets range from retail, office/medical office, industrial and mixed-use properties in Connecticut, Massachusetts, New Hampshire, and Rhode Island. The Greystone Group leases office space, medical office space, retail space, and industrial space and can customize space to fit tenants’ needs.


Meghan Rennie
I joined Greystone in 2022 as the Finance and Accounting Manager. I oversee all Accounts Payable, Accounts Receivable, and Finance functions. Prior to my current position, I was the office manager at several car dealerships and a staff accountant at Coast Realty in East Providence.
During my time here, I have implemented our new tenant portal, as well as a new accounting system, a new Payables system, and I have created several other system efficiencies to help make things easier for tenants and vendors alike.
I am a graduate of Southern Connecticut State University, where I majored in Business Administration with a concentration in Marketing. I currently live in Fall River, MA with my fiancé and our 2-year old Frenchie, Dogtor Peter Venkman. When I’m not keeping myself busy with invoices and spreadsheets, you can find me going for walks at the beach or playing trivia for bragging rights.

Tiffany Szymanski
I joined The Greystone Group in February 2022 as their Commercial Property Manager. Prior to The Greystone Group, I was the Residential Property Manager at Brady Sullivan Properties and had worked my way up from Leasing Associate.

Carmela Valentino
I joined The Greystone Group in April 2019. My background is in operations and process improvements within large complex healthcare systems. I have used my skills and knowledge and was able to translate them to a small family business in real estate.
While at The Greystone Group I have supported growth with staff and our real estate holdings. I enjoy using my skills in a different industry to support our family business. I live in Guilford Connecticut with my beautiful sons, mom and mini poodle.

Antonio Cassisi
Antonio Cassisi is the owner and CEO of The Greystone Group. Antonio has been in the real estate industry for over 20 years. He has focused on acquiring and developing real estate assets throughout New England to increase the company’s holdings portfolio which is well diversified.
His work has included acquisitions and development of multi-family residential units, strip malls, land, medical office buildings and industrial space that is leased to local and regional businesses as well as large commercial space for national tenants located in Connecticut, Massachusetts, Rhode Island and New Hampshire.

Domenico Cassisi
Domenico Cassisi immigrated from Italy and started as a masonry contractor in 1969. He honed his craft as a stone mason and bricklayer. He worked closely with a national convenience store chain and built their store locations across the east coast. He purchased and property managed his first commercial investment over forty years ago and has since added to his holdings over the years.

Laurie Lake
I joined Greystone Group in 2022 as the Office Manager. Prior to Greystone Group, I was a Property Manager at Brady Sullivan Properties (BSP) in Coventry, RI and the Assistant Property Manager at Legacy Real Estate in Providence, RI.
During my tenure at BSP, I helped the company maintain full occupancy, resident, and vendor relations. Currently at Greystone Group I lend daily support to the Property Manager, Accounting Staff and Ownership with day-to-day operations.
I am a graduate of the University of Rhode Island, where I majored in Speech Communications. I currently live in Coventry, RI with my family.

Jennie Ciabatoni
I joined The Greystone Group Valentine’s Day, 2024 as the Accounts Payable Specialist. I am responsible for maintaining a streamlined bill pay system and various communications with vendors. Additionally, I provide assistance the Finance Manager and support on company improvement projects.
I graduated Stockton University, majoring in both Accounting and Hospitality Management. Much of my career was spent in Internal Audit for Caesars Entertainment. I later transitioned through tax firms and short-term rental management before embracing my enjoyment of bookkeeping and payables. Supplemental to my work here at Greystone, I manage the bookkeeping for my realtor and am building my own small residential rental property portfolio.
On a personal note, I am from South Jersey, having moved to Norwich, CT with my now fiancé and 2 cats in the summer of 2023. Outside of work, I love yoga, furniture flipping and figure skating, including skating on the local adult synchronized skating team.