How do I research what other single family homes in my designated area are renting for?
rentometer.com works well as does having your agent run rental comps for you.
Check out all of the popular rental sites: Zillow, Craigslist, Hotpads, etc. Search your are and see what other homes are renting for. You can also call your property management companies and ask what the rents are for your area. Visit their websites and look at their current listings. You'll see what the going rents are.
To find Renting for is easy as other suggested but you find how it rented too. So your home is not vacant for months and lose rent.