redirect from old page - 302, 303 or 403 forbidden

Question

I create the site about realty. It has three page about one item (flat)

/flat/item/1 -main page about flat
/flat/gallery/1 -photos
/flat/map/1 -map

Customer wants that if flat is out of stock then two pages(gallery, map) have unaccesible for view.

I want to know. What kind of status code I have to set 403 or 404? May be 302, 303 and redirect to /flat/item/1?

Answer 1

If you don't want to redirect, you should be using 410 ("Gone"). This means that the resource is permanently no longer available.

If you want to redirect the gallery and map to the main page, use code 301 ("Moved Permanently").