Hi Archie --
The link with your question is for a property that has been sold. There won't be a button or a link to a listing agent for a property that is not available on the market. If it says "Public Record" that means the listing is just informational.
I don't believe there are any build-able lots in Ciega Village. Pinellas County is pretty much built out, and has been for years. From time to time, a person who has a dividable lot will put it on the market, or, more often, a house that is in such poor shape is sold with the intention of it being a tear-down.
A search of the entire zip code 33762 shows only 3 listings for land; a $1.5M commercial span on Ulmerton, and two lots which could be used for residential, described as "perfect for a manufactured home for rental" and "long term investment potential" due to proximity to property purchased by the St. Petersburg Clearwater Airport. Probably not what you want.
I'd be happy to provide additional assistance.
Best wishes in your search.