That kind of development is called a PUD, and any developer desirous of making a plan ‘around’ rail transportation is foolish not to plan – and secure prequal – on as much community development as practical. It has nothing objective to do with grants, although a developer would also be foolish not to apply for as much grant assistance as makes sense.
Which may be none. Grants usually come with disbursement timing and conditions that are wildly unlike actual real-estate construction, and you’ll ignore the potential problems at great potential pain. See the restoration of 1309 for a list of things to watch for…