The Zillow API Network turns member sites into mini real estate portals by offering fresh and provocative real estate and mortgage content to keep people coming back. There are four categories of APIs.
1) Home Valuation API: Search results list, Zestimate™ home valuations, home valuation charts, comparable houses, and market trend charts.
2) Property Details API: Property-level data, including historical sales price and year, taxes, beds/baths, etc.
3) City and neighborhood market statistics and demographic data
4) Mortgage rates and monthly payment estimates