Understanding Algarve Planning Zones (PDM)

What is a PDM?

Every Portuguese municipality has a Plano Director Municipal (PDM): the master plan that defines land use across the entire municipality. The PDM determines what can be built where, maximum building heights, plot ratios and permitted uses.

Key zone types

Urban zones (Solo Urbano): Areas designated for building. Subdivided into residential, commercial, industrial and mixed-use. New construction is generally permitted subject to local rules.

Rural zones (Solo Rústico): Agricultural, forestry or natural land. Construction is heavily restricted. You may be able to build agricultural support structures but not residential property without a special permit (PIP).

REN (Reserva Ecológica Nacional): Ecological reserve areas where construction is generally prohibited. Includes flood plains, steep slopes, coastal areas and water protection zones.

RAN (Reserva Agrícola Nacional): Agricultural reserve land protected for farming. Building is almost always prohibited.

Natura 2000: European environmental protection network. The Algarve has significant Natura 2000 areas, particularly along the Ria Formosa and the west coast (Costa Vicentina).

Why it matters

A property's PDM classification directly affects its value and development potential. Land in a rural zone classified as REN or RAN has very limited building potential regardless of price. Always check the PDM before purchasing.

Check Algarve's map shows PDM zones for all 16 Algarve municipalities by consuming official WMS data from SNIT.