Detailed Plan vs. Prior Communication: How detailed planning simplifies Urban Processes
- Ana Carolina Santos

- Nov 19
- 3 min read
In Portugal, the urban licensing process has been evolving towards simplification, especially with the changes introduced by the Simplex Urbanístico. A common question among property owners and developers concerns the impact that a valid detailed plan (Plano de Pormenor) has on the type of administrative procedure required for their urban operation.

What is a Plano de Pormenor?
The Plano de Pormenor (detailed plan) is a territorial planning instrument that develops and specifies in detail the proposals for the occupation of a specific municipal area. It rigorously defines urban parameters such as alignments, building footprints and volumes, land uses, and other constraints that must be respected in urban operations.
Fundamental distinction: Licensing vs. Prior Communication
Licensing is the traditional procedure, characterized by several sequential steps and a detailed analysis by the Municipal Council. This process is obligatory for:
Land subdivision operations in areas not covered by a detailed plan with specific characteristics
Construction, alteration, or expansion works in areas without a detailed plan or subdivision operation
Interventions in classified properties or those under classification
Works in areas subject to administrative easements or public utility restrictions
Prior Communication is a simplified and faster route, applicable when urban rules are clearly defined. Works subject to prior communication include:
Land subdivisions in zones covered by a Plano de Pormenor published after 7 March 1993
Urbanization works in areas with a valid Plano de Pormenor
Construction, alteration, or expansion works in areas covered by a detailed plan
"When urban parameters are already established in a plan, administrative control can be significantly simplified."
When does the Plano de Pormenor exempt the need for Licensing?
For a detailed plan to exempt licensing, it must comply with specific requirements set by the Regime Jurídico da Urbanização e Edificação (RJUE):
The plan must have been published after 7 March 1993
Contain detailed urban design
Include subdivision into plots
Define the maximum number of housing units
Establish implementations and programming of urbanisation and building works
Operations covered by the simplification shift include:
Subdivision operations
Urbanisation works and land remodeling
Construction, alteration, or expansion works
Total exemption from Prior Control
The Decree-Law No. 10/2024 introduced a significant novelty: subdivision operations in areas covered by a Plano de Pormenor with registration effects are now fully exempt from prior control. This means they require neither licensing nor prior communication.
Other exemption situations include:
Conservation works
Interior alterations not affecting structure
Works of limited urban significance
Reconstruction works that do not increase facade height
Operations preceded by favourable prior information
Practical advantages of simplification
For developers:
Significant reduction of deadlines from months to days or weeks
Lower procedural complexity with a single documentation submission
Greater predictability due to clearly defined urban rules
Reduction of administrative and financial costs
For the administration:
Optimisation of human and technical resources
Reduction of procedural load
Greater administrative efficiency
Focus on inspection rather than exhaustive prior control
Practical considerations
Prior analysis is crucial. Before starting any urban operation, it is essential to verify:
The existence and validity of the detailed plan
Compliance with specific legal requirements
Compatibility of the intended operation with the plan provisions
Need for external entity opinions
Technical responsibility
Process simplification requires greater responsibility from the involved technicians through:
More comprehensive responsibility terms
Declarations of conformity with planning instruments
Commitment to compliance with applicable legislation
Subsequent supervision
The simplification model relies on strengthened post-factum supervision, where works may be subject to:
Measures ensuring urban legality
Sanctions in case of non-compliance
Suspension and demolition if necessary
Reflection
Simplifying urban processes via detailed, properly elaborated plans represents a positive evolution in Portuguese territorial management. This paradigm shift—from exhaustive prior control to effective subsequent supervision—requires greater accountability from all participants.
A detailed and legally robust Plano de Pormenor offers a significant competitive advantage for territorial areas, providing faster procedures and legal security for investments. For owners and developers, understanding these dynamics can mean the difference between a project advancing swiftly or becoming entangled in lengthy bureaucratic procedures.
Ongoing transformations in Portuguese urbanism point toward a future where rigorous upstream planning gradually replaces ad-hoc downstream control, benefiting the entire value chain of the real estate and construction sector.
If you need clarification on your specific project, expert advice is available to help identify the most appropriate procedure, ensuring legal compliance and process efficiency. Contact us for a personalised consultation and discover how we can support fast-track and secure your project.



