How should I use schema.org in a real estate site?

You can use RealEstateAgent - schema.org. you should have deep knowledge of HTML coding. So that you can make necessary change according. Or if you have developers working with you then you can ask them to necessary changes. There are various attributes that you have to learn before making necessary changes.

Hi Friend,
Third, let's understand how to use schema markup on your website.

• Go to Google's Structured Data Markup Helper.
• 
  Select the type of data that you plan to markup.
• 
  Paste in the URL of the page or article that you want to markup.
• 
  Highlight and select the type of elements to be marked up.
• 
  Continue adding markup items

It's hard to give you specific advice, as it is not known the structure of your website. But you can
To use Home - schema.org you should have deep knowledge of HTML coding. So that you can make necessary change according. Or if you have developers working with you then you can ask them to necessary changes. There are various attributes that you have to learn before making necessary changes.