Condominium ownership is best explained by looking at an example of a project that has 100 units for sale.
In this example, 49 of the total units in this building (or 49% of the total salable area) can be owned outright by non-thai nationals in their name. The ownership titles of these 49 units is referred to as Freehold or Foreign Quota.
This leaves 51 units remaining in the building (or 51% of the total salable). The freehold rights to these units are reserved for Thai nationals in what is commonly referred to as the Thai quota.
It is entirely possible for the Thai quota to exceed over 51% of the total ownership of a buildings salable area but the condominium act states that foreign quota can never exceed 49%.