What would be the best solution?

I’m building a site for a photographer. He works with realitors selling houses. The site he wants me to build would have several realitors, each with several potential properties. You would either search for a type of house or by realitor (not a problem).
This is the tricky part.
Each property will have its own page. One it will be four tabs. One for a picture viewer, one for video, a pdf document, and one for a map of where the property is located.

Now here are the questions I have. What would be the best way to set up the pages. Should each Realitor be a category, each property a sub category of realitor, and the posts are the actual data to populate the page.
What would be the best way to include the media, attach to the post and pull that out with wp_get_attachment_url()?

i haven’t started actually coding yet, I’m just trying to figure out the best way to organize, and make it user friendly to update the site.