Zillow announced today that other Web sites can now recreate the company’s functionality on their domain so that real estate agents, for example, could include detailed information from Zillow’s database of 68 million homes on their own Web sites.

Third-party consumer Web sites can incorporate Zillow’s API, which stands for Application Programming Interface, into their pages for free.

Zillow.com launched in beta, or test form, in February and includes home valuations and data on U.S. homes. The company in September opened the property details to homeowners, enabling them to publish updates or corrections to their property’s information that appears on the site.

The company is offering two different APIs: home valuations and property details. The home-valuation API includes Zestimate values, home-valuation charts, comparable sales, and market trend charts. The property detail API includes more detailed information about specific homes, including historical sale price and year, tax assessment, and the number of bedrooms and bathrooms.

Intent to offer an open API was originally announced via Zillow’s corporate blog in July. More than 30 companies implemented the API during the initial test stage, including Yahoo! Real Estate, Prudential Northern California and Nevada, ZipRealty and Redfin, Zillow said.

More information about the API is available at Zillow.com.

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