If is a that has a number that starts with a PO it is a manufactured home on leased land, and not considered real estate because there is no land involved. Since I can not see the listing that is the best answer I can provide you with.
644 W. Kalmia Dr does not appear to be a valid address. I am guessing you meant 633 W. Kalmia Dr which is not currently on the MLS. You will have to ask the agent who posted the listing as to why he did not provide more detailed pics by following the link to his web site. He may not find your question here in this forum.