Beach Bum,
There are building codes and laws that apply island wide - here is a link to some of them from NEPA:
http://www.nepa.gov.jm/legal/index.asp
The NCRA, TPCA, LDUC and Beach Act seem to be important in your case. Please be aware that there are new building codes being enacted. They could be passed by the government soon.
You can search for the title owner in the area you are planning to build on here:
http://www.nla.gov.jm/prod_serv/
Here is an article from the Gleaner where the Westmoreland Parish Council was stopping people from building without permits:
http://go-jamaica.com/news/read_article.php?id=5191
Here is a link to contact the Westmoreland Parish Council:
http://www.localgovjamaica.gov.jm/lo...c=Westmoreland
The composting toilet will probably need to be approved by NEPA since it is so close to the sea. For environmental reasons, please be sure to check this out. You need to remember to build with hurricane high seas in mind. Your sewage system will need to take this into account.
