To add to Shane's answer you must be relocating with a new or current employer, not voluntarily moving.
Excerpt from Mortgagee Letter 08-25
Relocations: The homebuyer is relocating with a new employer, or being transferred by the current employer to an area not within reasonable and locally recognized commuting distance. A properly executed lease agreement (i.e., a lease signed by the homebuyer and the lessee) of at least one yearâ€™s duration after the loan is closed is required. FHA recommends that underwriters also obtain evidence of the security deposit and/or evidence the first monthâ€™s rent was paid to the homeowner.
If you're simply moving to a different area then you'd have to conform to the departing residence guidelines as they are.