Arbitrage is when an investor purchases an investment property below market value and quickly sells or rents it for a profit. Airbnb rental arbitrage is the act of renting a property longterm and then rerenting it shortterm on vacation rental sites like Airbnb or Vrbo.In real estate arbitrage, used as a verb "arbitraging," means to buy one property and then sell that same property for a profit. Real estate arbitrage occurs when a real estate investor purchases an investment property and sells it simultaneously at a higher price. Rental arbitrage is an expert technique where you sublease a property for the sole purpose of Airbnb. Rental arbitrage is the practice of renting out a longterm rental on a shortterm basis. Rental arbitrage is a real estate investing strategy to capture the spread between a property's long-term rental rate and short-term rental potential.