Building permits and authorisations in Spain

The first two are alternative enabling titles whose split is set by regional and municipal regulation; the third does not enable construction, it validates the technical document, and is only obligatory in the defined cases of Royal Decree 1000/2010. The applicable route is checked in the municipal ordinance before anything is filed.

The works licence is the classic regime: the municipality checks the design's conformity with planning before authorising. Today reserved in most regulations for works of greater significance, notably new construction and extensions, its processing is the stretch of the calendar the developer controls least: legal resolution periods coexist with longer real ones in many municipalities, and requests for correction restart clocks. The required documentation, the mechanics of the procedure and the practices that reduce requirements are developed in the article on the works licence.

An economic rule presides over this phase: the cost of waiting. Every month of licence is a month of financial and overhead costs with no works to absorb them, which turns the quality of the submitted basic design, complete, coherent, without weak flanks, into an investment with a direct return in schedule.

For lesser works, renovations without structural change, many fit-outs, minor works, the general regime has shifted towards the responsible declaration: the applicant declares under their own responsibility that the requirements are met, submits the required documentation and may begin, with municipal verification coming afterwards. The trade is clear: speed in exchange for risk, because an inaccurate declaration or non-conforming works face stoppage and restitution. Which works go down each route depending on regional regulation, and how to manage the regime's inherent risk, is analysed in the article on the responsible declaration.

The visado colegial verifies the technician's identity and qualification and the formal integrity of the document. Since Royal Decree 1000/2010 it is voluntary as a general rule and obligatory for a short list of works, with the proyecto de ejecución (detailed design) of building works and the final works certificate as the central cases of the ordinary process. Outside the obligatory cases, the visado survives as a documentary traceability seal that some developers, insurers and administrations continue to value. The exact cases and the real content of the control are detailed in the article on the visado colegial.

The first is treating the licence period as a fixed step in the calendar: it is a variable, and serious operations model it with ranges and contingency milestones. The real periods of the specific municipality are worth consulting.

The second is choosing the regime by wish rather than by rule: the applicable route is determined by regional and municipal regulation according to the works, not by the developer's urgency. The check is made against the type of works designed.

The third is starting under a responsible declaration works that required a licence: the weeks saved turn into stoppage, proceedings and extra cost. The stoppage arrives once the site already has resources mobilised.

The fourth is forgetting concurrent sectoral authorisations, heritage, roads, coasts, water, industry, whose absence blocks the licence or invalidates the declaration however complete the planning documentation. Their processing runs in parallel and is often slower than the licence.