Residential & Commercial Real Estate
Long Island - NYC - Hamptons
ABOUT
Cosmo Group Realty is a highly-experienced, culturally-diverse Real Estate company whose goal is to provide the utmost in personalized service and exceptional results to their clients. Founded by partners Tatiana Valverde (CEO), Jessica Alejo (CFO) and Johanna Delgado (COO), the firm was built on a solid foundation of core values like integrity, dedication, superior care, and the commitment to put every buyer and seller first.
Cosmo Group believes in establishing clients for life, not just for one more transaction. They bring a high degree of intelligence and empathy to each interaction, and are consistent with the high standards in their level of service – not depending on transaction volume, but each client as an individual. Further raising the bar is their work ethic, market knowledge, consistent communication and skilled negotiating that earn clients’ trust and get deals done right.
Specialized in representing property buyers and sellers, Cosmo Group covers all of New York City, Long Island, The Hamptons. Whether you are a first-time buyer seeking a starter home, someone moving up to a luxury residence, an owner selling a property you’ve loved for years, or an investor seeking to maximize ROI, they are experts in their field, and a full-service resource for all your needs.
Helping clients buy, sell, and invest with confidence through strategic marketing, expert negotiation, and personalized service.
What we do?
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We combine smart marketing, exceptional presentation, and hands-on support to give your listings the edge in today’s competitive market. From first impression to final signature, we are with you every step of the way. What set us apart is what we can do to your home in order to maximize your outcome.
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We guide buyers through every step of the process with expert market knowledge, strategic negotiation, and personalized support, making the journey to homeownership as seamless and rewarding as possible.
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Successful real estate investing requires more than finding the right property—it demands market insight, careful analysis, and a strategic approach. We help investors identify opportunities, evaluate potential returns, negotiate favorable terms, and build portfolios designed for long-term growth and financial success.
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Item We believe great agents are developed through education, mentorship, and continuous support. Whether you're just beginning your real estate career or looking to elevate your business, we provide the training, guidance, and personalized coaching needed to build confidence, sharpen your skills, and create a foundation for long-term success.
Never stop Learning, never stop growing.
I believe my clients deserve more than experience, they deserve someone who is constantly evolving. That's why I remain committed to lifelong learning, professional development, and continuous innovation, ensuring every client benefits from the highest level of expertise, insight, and dedication.
New York Real Estate Broker LicenseNew Jersey Real Estate Broker LicenseFlorida Real Estate Broker LicenseNMLS Mortgage LicenseCRB - Certified Real Estate Brokerage ManagerPSA - Price Strategy AdvisorSRS - Seller Representative SpecialistRENE - Real Estate Negotiation ExpertSFR - Short sales & Foreclosure ResourceMRP - Military Relocation ProfessionalCSP - Certified Senior ProfessionalCSE - Commercial Sales ExpertPMP - Project Management ProfessionalFAA Remote Pilot Certified
“Cosmo Group Realty reflects my commitment to excellence, my passion for helping others build lasting wealth, and my belief that every client deserves an experience defined by trust, expertise, and exceptional results.”