About OIR

Bearded man in a blue suit standing in front of a brown sofa.

Voted the “Best Boutique Real Estate Company in Miami Beach” by the Miami Sun Post, the husband-and-wife team of single agent realtors, Ralph De Martino and Aura Cecilia Rengifo, have over 50 years of combined experience in the real estate industry. Specializing in oceanfront properties and coastal living, they serve the greater Miami area and beyond. As Single Agents – the legal term for agents having a Fiduciary Relationship with their clients- they are known for their business acumen, and work ethic which is led by honesty, loyalty, and integrity. For Ralph and Aura Cecilia, clients’ interests always come first.

Ralph E. De Martino, CRS, GRI, RSPS, TRC & Aura Cecilia Rengifo, TRC
Ocean International Realty

305-695-1105 Direct

305-850-7660 Fax


Meet Ralph and Aura Cecilia

Ralph De Martino’s successful real estate career spans three and a half decades. Broker and President of Ocean International Realty and is on the Board and a member of the highly-acclaimed Master Brokers Forum comprised of the top Miami’s Realtors, his reputation for the highest standards of professionalism, ethics, and service has placed him at the top of his field.

His leadership boasts an impeccable track record: State Director for Florida Realtors since 2001, Ralph also served as the 2011 President of the Miami Association of Realtors and as a Director for the National Association of Realtors. A member of the Florida Bar Grievance Committee and the Florida Resort and Second Home Property Forum, Ralph has received numerous awards and distinctions over his career, including being ranked in the top two percent nationwide for sales volume, the Florida Realtors Honor Society, and the Realtor Association of Greater Miami and the Beaches Honor Society.

In addition, he was recognized by the Miami Sun Post as the “Best Vacation and Second Home Broker” in Miami. A Miami Beach resident since 1996, Ralph lives with his wife Aura Cecilia.


Member of the highly acclaimed Master Brokers Forum
2011 Residential President for the Miami Association of Realtors – The largest in the U.S.
State Director –The Florida REALTORS, Since 2001.
Director for the National Association of REALTORS – 2005 and 2011
Over 25 years in Real Estate
Broker / President of Ocean International Realty – Voted “BEST BOUTIQUE REAL ESTATE COMPANY IN MIAMI BEACH”
A member of the Florida Resort and Second Home Property Forum and a former member of the Florida Bar Grievance Committee

CRS – Certified Residential Specialist
GRI – Graduate of the REALTORS Institute
RSPS – Resort & Second Home Property Specialist

REO Specialist
Transnational Referral Certification (TRC)
International Property Specialist
Signature Property Specialist
Community Commercial Specialist
Relocation Home Marketing Specialist
Relocation Home Finding Specialist
Miami–Dade County Marketing Specialist

Honors and Awards
Advisory Board Member of the Master Brokers Forum
Realtors Association of Greater Miami and the Beaches Honor Society
Florida Association of REALTORS Honor Society
1993 REALTOR of the Year
1992 REALTOR Board President
1995 Ranked #1 in Closed Units Statewide for Prudential Real Estate Affiliates in Kentucky
1995 Ranked #1 in Sales Volume Statewide for Prudential Real Estate Affiliates in Kentucky
Adjunct Professor in Real Estate for the University of Kentucky College System 1988-1996
Past Member of the National Real Estate Educators Association
Past President of the Kentucky Real Estate Educators Association
Kiwanis Club of Miami Beach Past President
Lions Club Past President

Aura Cecilia Rengifo enjoyed a successful career in international business development, international relations, and academia across Latin America, Europe, and China for over 20 years before becoming a Single Agent broker about a decade ago. A skilled negotiator with a comprehensive understanding of business, cultures, and currencies, Aura Cecilia’s professional experience affords her an investor’s view of the real estate industry.

With a B.S. in International Studies from Universidad Central de Venezuela and a Master of Public Policy degree from University of Houston, Aura Cecilia is multilingual, speaking fluent English and Spanish as well as basic French and Portuguese.

She currently sits on the Board of Directors of Florida Realtors and the Miami Association of Realtors Professional Standards Committee. A Miami Beach resident since 1999, Aura Cecilia lives with her husband Ralph.


Extensive experience with Luxury Water Front Condos and Single Family Homes
Ranked High in Customer Service and Client Advocacy
Speaks Fluent Spanish, Level 2 French and Basic Portuguese
Highly Skilled Negotiator
Past President for Global Crossing – Andean Region
Vice President, Business Development and Board of Directors for Cisneros Group of Companies – Venezuela
Government Relations Director – AT&T – Venezuela and Andean Region
Governmental Trade Negotiator – Venezuela
Masters Degree in Public Policy – University of Houston
Bachelors Degree, International Studies – Universidad Central de Venezuela
Public Policy Studies, Universite Catolique de Louvain, Belgium

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