What phrase typically indicates a fee simple determinable estate?

A fee simple determinable estate is characterized by a condition attached to its ownership that dictates how long the estate will last. The phrase "as long as" is crucial in indicating this type of estate because it explicitly sets a condition for the duration of ownership. In this context, the owner holds the property under the stipulation that it must be used in a certain manner or for a specific purpose, and if that condition is violated, the estate automatically reverts to the grantor.

For example, a property given "to my church as long as it is used for religious purposes" creates a fee simple determinable estate. If the church ceases to use the property for that purpose, ownership automatically reverts back to the grantor.

The other phrases do not convey the same legal implications of a conditional duration that defines a fee simple determinable. "Until terminated" suggests an unspecified end condition rather than a specific duration based on usage. "In perpetuity" denotes an interest that lasts forever without conditions attached, while "forever and ever" further emphasizes an everlasting hold, which also lacks the conditional aspect necessary for a fee simple determinable estate.