Similar to regular Fractional Ownership, The "Tenants in Common" or "TIC" method of purchasing commercial real estate is when 2 to 35 co-owners together acquire a fractional deeded interest, usually in a 1031 property.
The buyers can have one or more than one shares each, not necessarily with each owning an equal share. The buyers are given what is known as a fee title, which can be inherited or sold as any deeded title can be.
It is very important when entering into a Tenants in Common transaction that you are assured of the value and income-producing abilities of the property, and it's an added benefit to have the project managed by a professional third party company to avoid problems with rentals, evictions, etc.