With more than two decades of experience in South Florida real estate, Sebastian Acosta has built his career helping buyers, sellers and investors navigate Miami’s competitive property market.
As a Global Real Estate Advisor with Sotheby’s International Realty, Acosta combines local market knowledge, international reach, investment experience and modern luxury real estate marketing.
More Than 20 Years in Miami Real Estate
Sebastian Acosta obtained his Florida real estate license in 2004 and has remained active through several major market cycles, including the financial crisis, Miami’s luxury development boom and the recent influx of new residents and businesses into South Florida.
His practice includes Miami luxury homes, Brickell condos and penthouses, waterfront properties, new developments, investment properties, commercial real estate and landlord representation.
Acosta works throughout Brickell, Miami Beach, Coconut Grove, Coral Gables, Key Biscayne, Edgewater, Downtown Miami and Sunny Isles Beach.
Rather than viewing every transaction as simply a purchase or sale, he focuses on the client’s larger objective. For buyers, that may involve selecting the right neighborhood, building or investment opportunity. For sellers, it means establishing the correct market position and creating a strategy capable of reaching qualified local and international buyers.
A Brickell Real Estate Specialist
As a longtime Brickell resident, Acosta brings a personal understanding of one of Miami’s most important luxury real estate markets.
Brickell has evolved into an international financial and residential district known for luxury condominiums, waterfront living, restaurants, hotels and corporate offices. However, values can vary substantially between buildings, and even between residences in the same tower.
Views, floor plans, elevation, exposure, condition, amenities and surrounding development can all influence the long-term performance of a property.
Acosta has represented buyers and sellers throughout the Brickell condo market, including properties at Icon Brickell, Jade Residences at Brickell Bay and other prominent luxury developments. His building-level knowledge helps clients compare established residences with new construction and determine which opportunities best fit their lifestyle or investment goals.
Luxury Real Estate Meets Digital Marketing
A defining element of Acosta’s career is his early adoption of digital marketing and social media for real estate.
Long before online marketing became standard in the luxury property industry, he was using digital platforms to promote listings, build audiences and communicate real estate information.
In 2017, he published The Million Dollar Listing Social Media: The Ultimate Social Media Marketing Guide for Real Estate Professionals. The book explores how real estate professionals can use Instagram, Facebook, YouTube and other platforms to increase visibility and grow their businesses.
His marketing philosophy is particularly relevant in Miami, where a buyer may first discover a property from another city or country. Professional photography, video, social media, digital storytelling and global distribution can influence how a luxury residence is perceived before the buyer ever visits it.
International Reach Through Sotheby’s International Realty
Miami remains one of the most internationally connected real estate markets in the United States.
Acosta’s multicultural background and ability to communicate in English, Spanish, Portuguese and French allow him to work with buyers, sellers and investors from multiple markets.
His international experience is complemented by the worldwide reach of Sotheby’s International Realty, giving the Miami properties he represents exposure beyond South Florida.
According to his verified RealTrends profile, Acosta recorded $26.31 million in sales volume and 57.4 transaction sides based on 2025 sales data. His transaction history includes properties throughout Brickell, Miami Beach, Coral Gables, Coconut Grove, Sunny Isles Beach and surrounding communities, with sales ranging from below $1 million to more than $10 million.
Acosta is also the author of Make Millions with Foreclosures and Short Sales and Karma in Business. His background as an investor and author gives him a broader perspective on property valuation, marketing, negotiation and long-term investment strategy.
Expanding Into Riviera Maya Real Estate Development
Acosta is now beginning the next stage of his career by expanding into real estate development with AMX Developers.
The company is starting projects in Mexico’s Riviera Maya, a region that includes Playa del Carmen, Tulum and other internationally recognized coastal destinations.
This move builds upon Acosta’s experience advising real estate investors and marketing luxury properties to an international audience. The new projects will explore residential and mixed-use concepts influenced by architecture, hospitality, wellness and lifestyle.
His expansion into Riviera Maya development also creates a connection between two globally recognized real estate markets: Miami and Mexico’s Caribbean coast.
Looking Ahead
Miami real estate continues to evolve as new developments reshape Brickell, Miami Beach, Coconut Grove, Edgewater and other high-demand neighborhoods.
Acosta’s approach combines traditional real estate fundamentals, including valuation, negotiation and local market knowledge, with international exposure, investment analysis and modern digital marketing.
After more than two decades in the industry, his career reflects the evolution of Miami luxury real estate itself: increasingly global, increasingly digital and increasingly connected to finance, investment and lifestyle.
For Sebastian Acosta, real estate is not simply about selling a property. It is about understanding the market behind it, the people involved in the transaction and the long-term opportunities that connect them.
