Unfortunately, like with Crystal Beach, there aren’t any condos for sale in Ozona – just homes. There only appears to be one complex, a waterfront complex called Magnolia Waterfront, and the last time there was anything which sold in that complex was 2008.
If you like the Ozona area you should either plan to buy a house or you should look at condos nearby in Palm Harbor. (Sometimes the search below shows a bunch of listings that aren’t in Ozona when there aren’t any available there.)