About Us

Richard David Klein, Esq. joined the Diamond Law Group in 2002 while attending Touro College Jacob D. Fuchsberg Law Center, in Huntington, New York at night. He was admitted to practice law in New York in 2007, concentrating on transactional real estate law, including representation of buyers, sellers, and lenders. He has personally mentored most of our paralegals and attorneys, some without any previous legal experience, to become experts in the field. Mr. Klein also created an industry-standard interactive website allowing all involved parties to the transaction to log-in and follow along as their important transaction progresses.

Outside of work, Mr. Klein enjoys spending time with his wife Sarah, and three children, Matthew, Zoey and Dylan. He is a lifelong fan of the New Jersey Devils, Mets and Jets. Richard is also currently the Pack 776 Den 8 Leader, PTA Vice President of Unqua Elementary School and volunteers as a DEK Hockey Coach.

Jonathan P. Bellezza, Esq is a 2013 graduate of Touro College Jacob D. Fuchsberg Law Center, in Central Islip, New York. He was admitted to practice law in New York in 2014 and is the newest partner at the firm as of 2017. His drive, professionalism, and attention to detail allowed him to make partner after just four years of working at Diamond Law Group. Mr. Bellezza now has a staff of three paralegals working at his direction and concentrates on transactional real estate law, including representation of buyers, sellers, and lenders.Outside of work Mr. Bellezza enjoys cooking, exercising and spending time with his wife and his two sons Jonathan & Joseph.

Steven M. Siliato focuses his practice on the purchase and sales of business, residential and commercial real estate, including representation of institutional and private lenders. In addition, Mr. Siliato represents and counsels clients on land use / development, leasing and evictions.

Mr. Siliato’s experience and success in real estate earned him the distinction of being named a Super Lawyers® Rising Star in 2019, 2020 and 2021. This prestigious award is given to no more than 2.5% of all eligible attorneys.

Some highlights from Mr. Siliato’s career include the sale of a portfolio of mobile home parks for $240MM; an asset sale of a privately held pretzel manufacture for $115MM; an asset sale of a privately held heating, air-conditioning and ventilation equipment distributor for $42mm, the sale of twelve privately held convenience stores in a stock and real estate portfolio sale for $12MM; an asset and real estate acquisition of a funeral home for $8MM; and a $10MM acquisition of a new corporate headquarters by a privately held tile wholesaler which included institutional lending and tax incentives from the New York State Job Development Authority and the Town of Babylon Industrial Development Agency.
In his spare time, Mr. Siliato enjoys playing hockey and spending time with his wife, three children and two English Bulldogs.

Received his Bachelors of Science/Bachelor of Arts Degree from Georgetown University in 1983 and his Juris Doctor Degree from St. John’s University School of Law in 1993, and is admitted to practice law in both the state of New York and New Jersey, as well as the United States District Court, District of New Jersey and the Southern and Eastern Districts of New York.

Upon graduation from law school, Mr. Castiglione became associated with the Law Offices of Euclid F. Maggiani in Manhasset, New York, which concentrated its practice in the areas of general corporate law, real estate law, representation of individuals and lending institutions in commercial and residential real estate transactions, foreclosures, and trusts and estate planning.

While at the Law Offices of Euclid F. Maggiani, Mr. Castiglione supervised all real estate transactions, business sales, and corporate matters. He is the chief supervisor of all bank transactions and is responsible for all closings and the liason between each lender and the mortgage broker. Presently, he serves as a member of Ticor Title Guarantee’s Advisory Board.

Mr. Castiglione is a member of the New York State Bar Association, New Jersey State Bar Association, Nassau County Bar Association, Columbian Lawyers Association and American Bar Association.

Lisa Doty joined Diamond Law Group in 2019 as a Real Estate Paralegal, working with our clients to ensure they understand all aspects of the home-buying and selling process from contract to closing. Originally from Denver, Colorado, Lisa has lived and worked as a paralegal on Long Island for over thirteen years, cultivating relationships with attorneys, lenders and other legal professionals that help to facilitate smooth transactions for our clients. Lisa prides herself on utilizing her knowledge and relationships in order to provide clients with a seamless, satisfying, stress-free closing experience.

Outside of work, Lisa enjoys reading, cooking and spending quality time with her husband renovating their new home.

Samantha Sorce joined Diamond Law Group in 2022. She graduated from the University at Albany, SUNY with a double major in Criminal Justice and Business. She has over three years experience in residential real estate. In her free time, Samantha enjoys paddling boarding, jet skiing, and hiking with her German Shepherd, Brodie.

Danielle Venturino joined Diamond law Group in July of 2020. She is a new graduate from hofstra university with a double major in criminology and psychology. She has future aspirations to attend law school and pursue a career as an attorney. During her free time she enjoys to draw / sketch, go to the beach, and cook new recipes.

Delia Young joined the Diamond Law Group team in 2015 as Richard Klein’s paralegal. She assists with all aspects of the firm’s residential real estate transactions. Delia received her bachelor’s degree from Stony Brook University with a major in Psychology and a minor in Political Science. She furthered her education at Hofstra University where she completed a paralegal certificate program and also hopes to attend law school in the near future. Delia is compassionate about animals and shares her new home with her two cats and her Bernese Mountain dog, Frankie.

Gianni Panepinto has been interning with the Diamond Law Group since June 2021. He currently attends Touro Law School and is expected to graduate in December 2022.

Mitch is the Founder (retired) & General Counsel Emeritus of Diamond Law Group. Mr. Diamond has been practicing in the area of Residential Real Estate exclusively for 20 years.   His expertise has evolved over the past two decades through helping Buyers and Sellers navigate through their Home Purchases and Sales.   Coming from a restaurant background and integrating the same level of Customer service into the law business has led to his overwhelming success and popularity. Mitch also represents many of the Country’s most prominent Lenders.

Mitch is married with three children and loves to Travel and spend as much time as possible with his family.