We had a similar situation where there was an abandoned building in a downtown low income tract. It was being converted to apartments (not meeting the affordable definition). We are going to submit it under the revitalization and stabilization of a LMI tract CRA "hook." We're not having our exam until this fall, so I don't know if that will fly. Our reasoning is based on a building that was minimally used to one that would provide housing units, something sorely needed in our area, plus the tax based increase and reducing blight. We'll probably throw in a comment that having a place to house workers locally will encourage additional business investment in the low income tract.
I would throw it against the wall and see if it sticks. A lot will depend on your examiner, as I've noticed they have very broad discretion on what they consider CD.
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All opinions are my own, not my employer's