Schema.org for properties/houses

There is nothing that prevents you from mapping your content types + fields to any of the types defined on schema.org. It's just that so far the types Event, Recipe and Person seem to be well understood by Google.

Regarding Real Estate, there isn't yet much available on schema.org besides http://schema.org/RealEstateAgent - there is a proposal at http://www.w3.org/wiki/WebSchemas/RealEstate about adding more support for Real Estate.

I wouldn't invest too much effort at this point until schema.org has a more stable support for real estate. subscribe to this mailing list if you want to stay informed on the progress of the various proposals: http://lists.w3.org/Archives/Public/public-vocabs/ or watch http://www.w3.org/wiki/WebSchemas/RealEstate for progress.

I would like to see Organization as well!

@khmilhollin you can already map your content type to 'Organization' in the "schema.org settings" vertical tab of your content type edit form. As far as I know Google does not support it yet but I'd encourage you to start using it because 1) it is the best way to show Google they should support it (I believe they monitor the types used on the web and decide what to support that way), and 2) once they start supporting it your site will be one of the first to show organizations as rich snippets.

I'm closing this issue, if you have more specific questions feel free to open new issues.