Business Details
35 Years
experience
Your Trusted Partner for Commercial Real Estate Solutions
Since 1991, Island Associates has established itself as a trusted leader in commercial real estate services across Long Island and beyond. Founded by Roger Delisle, our team combines decades of industry experience with deep local market knowledge to deliver tailored solutions for clients. We specialize in property sales, leasing, investment, and management, supported by in-house legal expertise to streamline transactions. Our professionals have represented major national retailers and corporations, leveraging their understanding of zoning regulations, property development, and market dynamics. With a commitment to persistence and client satisfaction, we've expanded our reach to include successful transactions in Atlanta, Miami, and throughout the East Coast.Our team's longevitysome members have worked together for over 20 yearsensures consistent, reliable service. We pride ourselves on creating value through cost-effective strategies and maintaining transparency throughout every engagement. Our office in Smithtown, NY, housed in a former IRS building, symbolizes our commitment to growth and excellence. We approach every transaction with the philosophy that challenging oneself and collaborating with others are keys to success. Our track record of representing both landlords and tenants in complex deals demonstrates our ability to navigate diverse real estate needs while maintaining the highest professional standards.
Services
Property Management
Tenant Representation
Investment Sales
1031 Exchange
Commercial Leasing
Retail Development
Industrial Properties
Office Space Solutions
Landlord Services
Buyer Representation
Details
- Year established: 1991
Highlights and features
- We offer 30+ years of commercial real estate expertise with in-house legal support
- Our team has represented major national retailers like CVS, Starbucks, and Dunkin'
- We provide end-to-end solutions from property acquisition to management
- Our professionals maintain deep local market knowledge across Long Island and NY
- We've successfully completed transactions in multiple East Coast markets
Services
Property Management
Our property management services cover commercial, residential, and mixed-use properties with comprehensive oversight of leases, maintenance, budgeting, and tenant relations. We handle day-to-day operations while maintaining strict financial controls and vendor management. Our experienced team ensures properties remain well-maintained and financially optimized through proactive management strategies.
Tenant Representation
We represent tenants in commercial leasing negotiations with expertise in retail, office, and industrial spaces. Our team analyzes market conditions to secure favorable terms while understanding each client's unique operational needs. We provide strategic guidance throughout the entire leasing process from site selection to lease execution.
Investment Sales
Our investment sales division specializes in commercial property transactions including retail centers, industrial warehouses, and office buildings. We leverage market insights and valuation expertise to maximize returns for sellers while helping buyers identify strategic opportunities. Our professionals facilitate smooth transactions through comprehensive marketing and due diligence support.
1031 Exchange
We provide expert guidance for tax-deferred property exchanges under Section 1031 of the IRS code. Our team helps investors identify replacement properties that meet strict regulatory requirements while aligning with their investment goals. We coordinate with legal and tax professionals to ensure compliant and timely execution of exchange transactions.
Commercial Leasing
Our commercial leasing services cover both landlord and tenant representation with expertise in retail, office, and industrial properties. We create customized leasing strategies that balance market conditions with client objectives. Our professionals handle lease negotiations, document preparation, and ongoing lease administration to protect client interests throughout the lease term.
People
Roger A. Delisle, Jr.
Managing Director & Commercial Broker
With 20+ years in commercial real estate, Roger specializes in national retail leasing and investment sales. He holds an MBA and CCIM designation, representing major retailers and property owners while leading our team of experienced professionals.
Terence McMahon
Commercial Sales Associate
Terence brings 5+ years of commercial real estate experience with a focus on retail property leasing. His prior 25-year accounting background provides unique financial insights that benefit both landlords and tenants during lease negotiations.
Larry Densen
Commercial Sales Associate
Larry combines 20+ years of commercial real estate experience with prior executive leadership in manufacturing. His dual perspective from both landlord and tenant sides of lease negotiations provides valuable strategic advantages for our clients.
Martine Gelsomino
Executive Assistant
Martine has supported our leadership and agents for over 25 years with property research, client communications, and office operations. Her business administration background and language skills enhance our team's ability to serve diverse client needs.
Christopher R. Mayor
Commercial Sales Associate
With 25+ years in commercial development, Chris represents national retailers and property owners in lease negotiations. His CIREC certification and experience in multi-family, retail, and office developments make him a valuable asset for complex transactions.
Questions
What commercial real estate services do you offer?
We provide comprehensive services including property sales, leasing, investment, management, and 1031 exchange assistance for commercial properties across Long Island and the East Coast.
Do you work with national retailers?
Yes, our team has extensive experience representing major national retailers like CVS, Starbucks, Dunkin', and 7-Eleven in lease negotiations and property acquisitions.
What markets do you cover?
While based in Smithtown, NY, we serve all of Long Island and have completed successful transactions in Atlanta, Miami, and throughout the East Coast.
Do you have in-house legal support?
Yes, we have in-house legal counsel to streamline document preparation and review, ensuring efficient and accurate real estate transactions for our clients.
How experienced is your team?
Our team includes professionals with 20+ years of commercial real estate experience, multiple industry certifications, and a track record of successful transactions since 1991.
Can you help with property management?
Yes, our property management services cover commercial, residential, and mixed-use properties with comprehensive lease administration, maintenance oversight, and financial management.
