I just read this on the Houston Area Realtor’s site aka har.com:
If you have a home available on a temporary basis (for rent or for free) for someone displaced by Hurricane Harvey, please make sure to post it here. Pulling together in this time of need, we will all make sure that no one goes without a roof over their head and a warm bed in which to sleep.
You do set up a free account, all details are on the page. Please share if you think someone can help with this. Thanks!