Planning in Portugal is not a single approval. What can be built is set by territorial plans, municipal regulations, subdivision instruments, public restrictions and sector regimes; how it is approved is set by the RJUE procedure that fits the works and the intended use.
The usual sequence is: read the planning position of the property, verify it against the registry and the municipal file, test the development envelope, choose the procedure (PIP, licence, prior communication or subdivision), clear the external authorities, submit and obtain the decision, build under permit, and close the file with the use title and the utilities connected.
The exact route varies with the location, the existing planning position, the works proposed and the law in force when the procedure is initiated.
This guide provides general information about planning and licensing in Portugal and does not replace advice on a specific project.