How to theme the create content of custom content type?
Sometimes I want certain roles to see the admin theme on a given page, and sometimes I don't. whitefleaCH's ThemeKey suggestion might address that better (haven't tried that module) but another module suggestion that addresses this is Page Theme. Extremely simple module that does exactly what it's name implies:


Install the module
Go to /admin/structure/page-theme and click "Add theme"
Pick your installed theme and add "node/add/property" and "node/edit/property" and any number of other relative paths to the "Pages" field.


Anyone visiting any of those paths will see the content through the theme you designated.