The competent authority
The permit application is lodged with the mayor of the municipality where the project is located.
It is the mayor who decides, not a central administration or national service.
The principle is broad: all construction is in principle subject to permit, subject to the lighter regimes applying to certain works, covered in the article on permit, notification or exemption.
Immediate practical consequence: the counterpart on a project is municipal, and answers obtained from one municipality do not hold for another.
The legal framework
Four texts structure the field, and it helps to know which governs what. They divide between the State and the municipality.
The amended law of 19 July 2004 on municipal planning and urban development, the central text, organising municipal planning documents and the permit regime.
The amended municipal law of 13 December 1988, setting out the powers of municipal authorities.
The law of 21 May 1999 on spatial planning, dealing with the higher tier.
The amended law of 19 January 2004 on the protection of nature and natural resources, which may overlay planning rules, covered in the article on easements and protections.
| Competence | Holder | Reach |
|---|---|---|
| General legal framework | State | Applies nationwide |
| Local planning rules | Municipality | Limited to municipal territory |
| Issuing of the permit | Mayor | Individual decision |
| Site enforcement | Mayor | During execution |
The division between State and municipality
It is not intuitive, and understanding it avoids misdirected effort. The power to issue lies with the mayor.
The State sets the framework. Laws, grand-ducal regulations and national technical requirements apply identically everywhere.
The municipality sets the rule applying to the site. Zoning, volume rules and integration requirements derive from documents adopted by the municipality.
The competent minister approves municipal planning documents, but does not process individual permit applications.
In other words: the State says what is possible in general, the municipality says what is possible here.
Why this division determines everything
This is the theme of the guide, developed in the article on why the rule is municipal. The division of competences is detailed there.
The same construction may be permitted in one municipality and refused in another, without either decision being unlawful.
The thresholds triggering a permit vary, meaning a project exempt somewhere may be caught elsewhere.
No general answer removes the need to check locally. That is the limit of any guide on this subject, including this one, and it is better said at the outset.
The mayor's powers during works
A point often discovered too late.
The mayor does not merely issue the permit. They hold policing powers during execution.
They may order works to stop where the permit is missing or the works depart from the conditions granted.
That measure is immediately enforceable, without awaiting the outcome of any appeal, as the article on building without a permit sets out.
The articles in this branch
The article on why the rule is municipal covers the theme and its consequences. The three municipal documents are presented there.
The article on the PAG and zoning covers the document dividing the territory. The consequences of classification are explained there.
The article on the two types of PAP covers the documents governing the detail. Their difference is set out there.
This article reflects the regulatory framework at the date of checking and serves professional orientation. It does not replace consultation of the municipality or legal advice.