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landlord living in rental unit - tax implications?
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does allowing family to stay at the rental jeopardize my depreciation?  no, accumulated depreciation that hasn't been deducted reduces your basis in the event of sale. that doesn't go anywhere. accumulating more may not be allowed though. if the property is no longer rental (i.e.: personal use, your family member lives there for free), you cannot claim expenses or depreciation on it. if you still rent it out to your family member, but not at the fair market value, then you can only claim expenses up to the rental income. i.e.: you can only depreciate up to the extent the depreciation (after all the expenses) not being over the income generated. you cannot generate losses in such case, even if disallowed. if you rent to your family member at the market rate (make sure it is properly documented), then the family relationship really doesn't matter. you continue accumulating expenses as usual.
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