There are three designations that I am aware of when owning a plot on the islands of Cape Verde, these are:

MISTRO - (Mixed) can be commercial and habitacao (commercial property and possibly residential). Or you can enquire about just having it as residential properties i.e. apartments.

HABITACAO - You can build only residential property.

COMMERCIAL - Possible to build commercial on ground floor with habitacao on above floors.

Please check this out with your solicitor before you by land. You may be looking at buying the wrong type of plot.