The number of cash flowing properties you need to retire early depends on several factors, including your financial goals, current expenses, and the amount of passive income you need to support your lifestyle. Here are some things to consider:

Financial goals: Determine the amount of passive income you need to achieve your financial goals, such as covering your living expenses, paying off debt, and building wealth.
Rental income: Consider the rental income you can generate from each property, as well as any expenses associated with owning and maintaining the property.
Savings and investments: Consider any other savings and investments you have, and how they can contribute to your passive income streams.
Location: The location of the properties can impact rental income and expenses, so consider the real estate market in the areas where you are investing.
It’s difficult to give a specific number, as the number of properties needed will vary based on individual circumstances. However, a general rule of thumb is to have enough properties generating enough passive income to cover your living expenses. This way, you can potentially retire early and live off the passive income from your properties.

It’s important to keep in mind that real estate investing is a long-term strategy and can be subject to market fluctuations, so it’s essential to have a solid financial plan in place and seek professional advice as needed.