Building a house in Portugal
The route is the same for residents and foreigners, but it is easier to get wrong from a distance. Here it is in order, with the rules in force since October 2026.
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Before you buy
Get a tax number (NIF). Then check what you can build. Land listed for sale is not always buildable, and it is the municipal plan (PDM) that decides. Read the land guide before paying any deposit.
Design
Architecture comes first, then engineering. New buildings must be nearly zero-energy, so insulation and orientation are decided here. Keep the design and the budget moving together, because redrawing later costs time and fees.
Permit
The revised building law has applied since 1 October 2026. Depending on the site, you need a permit or a prior communication. The permit guide explains both.
The build
The site manager records key facts and changes in a site logbook, which stays on site for inspectors. If you are abroad, ask for regular written updates with photos, and tie payments to work actually done.
Moving in
The old use licence has become a notice to the council, with a statement from the site manager or supervisor. After permitted works, the house can be used as soon as this is filed, and the council can inspect later. A new house also needs an energy certificate.
Common questions
Do I need to be in Portugal for the build?
Not all the time, but someone must act for you. Decide early who signs, who visits the site and who receives official letters.
Do I need a Portuguese lawyer?
It is a good idea for buying land and signing a build contract, especially if you do not read Portuguese.