Building licence or responsible declaration in Comunidad de Madrid

What is a responsible declaration for building works and how does it differ from a licence?

The fundamental difference between both instruments lies in the point at which the public administration verifies compliance with regulations and the right to commence works:

• Building licence (ordinary procedure): This is a regulated administrative process in which the local council carries out an a priori assessment. The applicant submits the technical project and cannot commence work until the competent body issues an explicit resolution granting the licence. This procedure is reserved for major developments or works with a higher planning impact.
• Responsible declaration for building works: This is a document signed by the developer or property owner stating, under their sole responsibility, that the project complies with applicable planning legislation, that they possess the supporting technical documentation, and that they undertake to maintain compliance throughout execution. It allows works to start on the very day of its complete submission to the municipal registry. In this case, administrative control shifts to an a posteriori phase through technical inspections.

The regional regulatory framework, structured mainly around the Law on Urgent Measures to Boost Economic Activity and Modernise the Administration in Comunidad de Madrid, established the responsible declaration as the general rule, leaving prior licensing for specified exceptional cases.

When to use a responsible declaration for works in Madrid

The responsible declaration for works in Madrid is the appropriate procedure for the vast majority of minor works and renovations that do not alter structural elements or the architectural configuration of the building.

Works typically subject to a responsible declaration

Under the scenarios set out in the Licence and Responsible Declaration Ordinance of Madrid City Council and equivalent regulations in other municipalities across the region, these include:

• Interior renovation works in residential homes and commercial premises that do not alter the load-bearing structure, facade or building envelope.
• Replacement or renewal of finishes, flooring, tiling, interior joinery and plumbing.
• Conservation, maintenance and specific fit-out works that do not affect heritage-protected elements.
• Modification or installation of air conditioning, electrical or telecommunications systems with no structural impact.
• Fit-out works in commercial premises that do not entail a change of use subject to a licence or an increase in floor area.
• Installation of ramps or simple mechanical accessibility elements that do not alter the overall structure of the property.

When an ordinary building licence is mandatory

Certain projects, due to their technical impact, structural safety considerations or effect on historic and environmental heritage, cannot be managed via a responsible declaration. In these cases, obtaining a prior building licence is mandatory.

Scenarios requiring prior planning permission

Processing through the ordinary licence procedure is required in the following situations:

1. New build developments: Construction of residential, commercial or industrial buildings from foundation level.
2. Major structural works: Comprehensive refurbishments, replacement or reinforcement of structural elements (floor slabs, columns, load-bearing walls, roofs).
3. Modification of facade or building envelope: Substantial changes to the exterior configuration of buildings, extensions in height or floor area.
4. Works on protected properties: Works on buildings declared Assets of Cultural Interest (BIC), listed in the Catalogue of Protected Assets and Spaces, or located in historic-artistic heritage zones, except for minor conservation works specifically authorized by dedicated regulations.
5. Changes of planning use: Modifications to the primary use of the property, such as converting commercial premises or an industrial warehouse into residential use, or implementing community/public uses requiring an environmental assessment.
6. Land subdivision and plot splitting: Subdividing land or plots requiring planning reorganisation.

Documentation and commencement of works in Comunidad de Madrid

Despite the speed offered by a responsible declaration for works in Madrid, submitting the document requires absolute technical rigor. Starting works without the required documentation invalidates the declaration from day one.

Essential documentation

To process the declaration formally, the following must be attached:

• Official responsible declaration form, completed and signed by the applicant.
• Full technical project drafted by a qualified professional (architect, technical architect or engineer, depending on the nature of the work) and endorsed by the relevant professional association where legally required.
• Site supervision and construction management appointment, if required by the nature of the works.
• Itemised budget breakdown, serving as the basis for self-assessment of the Construction, Installations and Works Tax (ICIO) and municipal planning fees.
• Construction and demolition waste management study, along with proof of payment of the corresponding municipal waste deposit.
• Proof of prior payment of municipal fees and ICIO tax self-assessment.

Once the documentation is registered on the municipal platform or with an accredited Urban Planning Collaborating Entity (ECU), the responsible declaration entitles the applicant to start works immediately, without waiting for subsequent notification. However, this does not preclude visits from municipal or technical inspectors to verify the accuracy of the declaration.

The role of Urban Planning Collaborating Entities (ECU)

At Madrid City Council and in other participating municipalities, project owners can use Urban Planning Collaborating Entities (ECU). These approved private entities handle verification, reporting and certification functions regarding compliance for planning applications.

Processing a responsible declaration through an ECU provides a Compliance Certificate that adds greater technical certainty to the project, streamlining interactions with municipal planning enforcement services.

Legal effects and risks of incorrect planning classification

Carrying out works under a responsible declaration when the project legally required a prior licence creates serious legal contingencies. The local council, exercising its inspection powers, can declare the responsible declaration invalid and order the immediate stoppage of works.

The administrative consequences of incorrectly processing planning applications include:

• Initiation of planning compliance enforcement proceedings.
• Opening of disciplinary proceedings with fines proportionate to the value of the executed works.
• Demolition orders or restoration of the premises to their original state if the works cannot be regularised.
• Inability to obtain a first occupation licence or operating licence to run a business.

For all these reasons, a prior technical assessment to determine which planning permit applies to each project is an essential phase of property development planning.

Specialised advice on urban development

Fitting a project into the categories of a responsible declaration for works in Madrid or an ordinary licence demands rigorous knowledge of regional planning legislation and specific municipal master plans. The technical complexity of local ordinances requires detailed analysis from the initial design concept through to project completion.

Sky Real Estate provides comprehensive coverage in architectural, engineering and urban planning project management. We hold Banco de España ICI D-286 accreditation for technical valuations and the recognition of the Sky Law European Legal Awards 2023-2025 for excellence in legal, real estate and planning analysis across corporate and residential sectors.

To ensure the technical and legal viability of your projects, explore our comprehensive urban development services.