Construction Safety Coordinator in Spain in 2026: RD 1627/1997, the Coordinador de Seguridad y Salud and Site Health-and-Safety Obligations

A construction safety coordinator in Spain is a qualified technical professional the property owner must appoint under Royal Decree 1627/1997 whenever more than one company or self-employed worker operates on a building site. The role exists in two forms: a project-phase coordinator who designs the safety study, and an execution-phase coordinator who approves the safety plan, coordinates concurrent activities and can halt work when workers face grave and imminent danger. Failing to designate one is a grave infringement carrying fines up to EUR 49,180, and the owner remains legally responsible regardless.

Why the coordinador de seguridad y salud exists

Spain transposed EU Directive 92/57/CEE into national law through Royal Decree 1627/1997 of 24 October, which sets the minimum safety and health provisions for construction works. The decree sits within the framework of Law 31/1995 on the Prevention of Occupational Risks (Ley de Prevencion de Riesgos Laborales, or LPRL), the foundational statute that Article 6 of which authorises the government to issue technical regulations on workplace prevention.

The coordinator role was introduced because construction sites involve multiple parties that do not fit the standard employer-employee relationship: the promotor (owner-developer), proyectista (designer), contratista (main contractor), subcontratista (subcontractor) and trabajador autonomo (self-employed worker). When several of these parties work on the same site simultaneously, no single employer controls the aggregate risk. The coordinator fills that gap by applying the general prevention principles of LPRL Article 15 across all concurrent enterprises.

The stakes are measurable. According to the Instituto Nacional de Seguridad y Salud en el Trabajo (INSST), construction recorded 157 fatal workplace accidents in the twelve months from June 2025 to May 2026, with a fatal incidence rate of 10.8 per 100,000 affiliated workers, the highest of any sector in Spain. The same period saw 79,421 workplace accidents with injury in construction, against a national total of 531,223. The coordinator framework is the legal mechanism that exists to reduce those numbers.

What are the two coordinator roles under RD 1627/1997?

Article 2 of the decree defines two distinct coordinator positions, each tied to a phase of the construction process.

Coordinador en materia de seguridad y salud durante la elaboracion del proyecto de obra (project-phase coordinator): defined in Article 2.1.e as “el tecnico competente designado por el promotor para coordinar, durante la fase del proyecto de obra, la aplicacion de los principios” set out in Article 8. This coordinator works during the design stage, ensuring that safety principles are baked into the project from the outset rather than retrofitted on site. Under Article 5.1, when a project-phase coordinator exists, they are responsible for elaborating or commissioning the estudio de seguridad y salud (safety and health study), the technical document that identifies risks and prescribes preventive measures.

Coordinador en materia de seguridad y salud durante la ejecucion de la obra (execution-phase coordinator): defined in Article 2.1.f as “el tecnico competente integrado en la direccion facultativa, designado por el promotor para llevar a cabo las tareas” set out in Article 9. This coordinator is embedded in the site management team (direccion facultativa) and works during construction. Their functions under Article 9 include approving the contractor’s safety plan, coordinating the preventive activities of all enterprises on site, organising coordination under LPRL Article 24, controlling correct work methods and ensuring only authorised persons access the site.

Article 3.3 permits the same individual to serve in both roles, which is common practice on smaller projects where a single arquitecto tecnico (architectural technician) can oversee both design-stage safety and execution-phase coordination.

When must the owner designate a coordinator?

Article 3 of RD 1627/1997 sets the two trigger conditions, and both depend on the number of parties involved.

Project-phase coordinator (Article 3.1): mandatory “cuando en la elaboracion del proyecto de obra intervengan varios proyectistas” (when several designers participate in drafting the project). If a single proyectista produces the entire project, no project-phase coordinator is required, though the promotor must still ensure a safety study or basic study is produced under Article 4.

Execution-phase coordinator (Article 3.2): mandatory “cuando en la ejecucion de la obra intervenga mas de una empresa, o una empresa y trabajadores autonomos o diversos trabajadores autonomos.” This covers three scenarios: more than one company on site; one company plus one or more self-employed workers; or two or more self-employed workers with no company. The promotor must designate the coordinator before work begins or as soon as the multi-party situation becomes apparent.

The practical implication for property owners is that almost any building project involving a main contractor plus subcontractors, or a contractor plus independent tradespeople, triggers the requirement. A single contractor using only its own salaried employees does not, but adding a self-employed plumber or electrician immediately creates the obligation.

Article 3.4 closes a common loophole: “la designacion de los coordinadores no eximira al promotor de sus responsabilidades.” Designating a coordinator does not transfer the owner’s legal responsibility. The promotor remains the party the Labour Inspectorate holds to account.

What does the execution-phase coordinator actually do on site?

Article 9 of RD 1627/1997 lists six specific functions, all of which are active site-management duties rather than paperwork:

1. Coordinate prevention principles when technical and organisational decisions are made to plan simultaneous or successive work phases (Article 9.a).
2. Coordinate activities to ensure contractors, subcontractors and self-employed workers apply LPRL Article 15 prevention principles coherently during execution (Article 9.b).
3. Approve the safety plan elaborated by the contractor under Article 7, including subsequent modifications (Article 9.c). When no coordinator is required, this function falls to the direccion facultativa.
4. Organise coordination of business activities as required by LPRL Article 24, which governs how concurrent employers share information about risks and preventive measures (Article 9.d).
5. Coordinate control functions to verify correct application of work methods (Article 9.e).
6. Control site access, ensuring only authorised persons enter (Article 9.f). Again, this falls to the direccion facultativa when no coordinator is designated.

The coordinator also holds the libro de incidencias (incidents book) under Article 13, a mandatory on-site register in which the direccion facultativa, contractors, worker representatives and prevention technicians can record safety observations. When an entry records a repeated breach or a serious incident, the coordinator must send a copy to the Labour Inspectorate within 24 hours (Article 13.4).

Can the coordinator stop work on site?

Yes, and this is one of the role’s most significant powers. Article 14 of RD 1627/1997 grants the execution-phase coordinator, or any member of the direccion facultativa, the authority to order the paralisation (halt) of specific tasks or the entire works when they observe a breach of safety measures and identify “circunstancias de riesgo grave e inminente para la seguridad y la salud de los trabajadores” (grave and imminent risk to worker safety and health).

Upon ordering a halt, the coordinator must notify the Labour Inspectorate, the affected contractors and subcontractors, and worker representatives (Article 14.2). This is not a recommendation: it is a binding site decision that stops construction until the risk is eliminated. The provision operates alongside the broader worker protection rights in LPRL Articles 21 and 44.

What must the safety study contain?

Article 4 of RD 1627/1997 distinguishes between a full estudio de seguridad y salud and a lighter estudio basico, based on project scale and risk. A full study is required when any of the following conditions apply (Article 4.1):

Threshold	Requirement
Budget equal to or above 75 million pesetas (approximately EUR 450,759)	Full safety study
Duration exceeding 30 working days with more than 20 workers simultaneously	Full safety study
Total labour volume exceeding 500 worker-days	Full safety study
Tunnels, galleries, underground conduits or dams	Full safety study regardless of size
None of the above	Basic safety study

The full study, per Article 5.2, must contain: a descriptive memorandum of procedures, equipment and risk identification; a conditions pliego (technical specifications) for machinery and protective systems; plans and diagrams; measurements of safety elements; and a budget quantifying all safety costs, which must be incorporated into the general project budget as a distinct chapter (Article 5.4). The basic study under Article 6 is a streamlined version that identifies avoidable risks, specifies preventive measures and addresses any special-risk works listed in Annex II of the decree.

The contractor then builds on this study by elaborating a plan de seguridad y salud (safety and health plan) under Article 7, which adapts the study’s provisions to the contractor’s specific execution methods. The execution-phase coordinator must approve this plan before work begins (Article 7.2), and the plan must remain permanently available on site to the direccion facultativa, worker representatives and prevention officers.

Who is the promotor and what are their obligations?

The promotor is the central figure in Spanish construction law. Article 9 of Law 38/1999 (Ley de Ordenacion de la Edificacion, or LOE) defines the promotor as “cualquier persona, fisica o juridica, publica o privada, que, individual o colectivamente, decide, impulsa, programa y financia, con recursos propios o ajenos, las obras de edificacion.” In plain terms: whoever decides to build, drives the project and finances it, whether for their own use or for subsequent sale.

For a private individual building or substantially renovating a home in Spain, that individual is the promotor. For a developer building a residential complex, the developer company is the promotor. A community of owners commissioning building work on a communal area can also be a promotor under RD 1627/1997 Article 2.

The LOE lists five obligations of the promotor in Article 9.2: holding the legal right to build on the land; providing the documentation needed for the project; obtaining the required licences and authorisations; subscribing the insurance policies required under LOE Article 19 (including the seguro decenal for residential buildings); and delivering the completed building documentation to the buyer. Under RD 1627/1997, the promotor additionally bears the obligation to designate coordinators (Article 3), ensure the safety study is produced (Article 4) and notify the labour authority of the site opening via the contractor’s communication under Article 19.

This matters because many foreign buyers undertaking construction in Spain assume their architect or main contractor handles all safety compliance. The law places the primary obligation on the promotor, and the promotor is the owner. You can read more about the broader building-control framework in our guide to the obra nueva process in Spain.

What are the sanctions for non-compliance?

The sanctions framework comes from the Ley sobre Infracciones y Sanciones en el Orden Social (LISOS), the consolidated text approved by Royal Legislative Decree 5/2000. Article 12 of the LISOS classifies infringements in prevention matters, and item 24 of that article deals specifically with construction sites under RD 1627/1997.

Failing to designate coordinators when required is a grave infringement under LISOS Article 12.24.a. The same article classifies failing to produce the safety study (12.24.b), failing to ensure contractors receive adequate risk information (12.24.c) and coordinators failing to fulfil their Article 9 duties due to absence or inactivity (12.24.d) as grave.

The fine ranges for prevention-related grave infringements are set in LISOS Article 40.2.b:

Infraction grade	Fine range
Grave, minimum	EUR 2,451 to EUR 9,830
Grave, medium	EUR 9,831 to EUR 24,585
Grave, maximum	EUR 24,586 to EUR 49,180

For context, the lightest prevention offences (leve, minimum) carry fines of EUR 45 to EUR 485 under Article 40.2.a, while the most serious (muy grave, maximum) reach EUR 491,866 to EUR 983,736 under Article 40.2.c. A coordinator designation failure will never reach the muy grave tier on its own, but if it contributes to a serious or fatal accident, the aggregate of multiple infringements can escalate rapidly.

The Labour Inspectorate (Inspeccion de Trabajo y Seguridad Social) enforces these provisions and has the authority to propose sanctions based on site inspections. The INSST, though not an enforcement body, provides the technical guidance that inspectors apply, including the Guia Tecnica for construction works referenced in the decree’s Disposicion final primera.

How does the coordinator interact with other building agents?

The coordinator does not replace any of the building agents defined in the LOE or RD 1627/1997. Instead, the coordinator overlays a safety-coordination function on top of the existing roles. Understanding how these roles interact is essential for any owner managing a construction project in Spain.

The direccion facultativa (site management team) comprises the director de obra (project director, typically the architect) and the director de la ejecucion de la obra (execution director, typically the arquitecto tecnico). The execution-phase coordinator is integrated into this team by definition under Article 2.1.f but has distinct safety responsibilities. When no coordinator is designated because the trigger conditions are not met, the direccion facultativa assumes the coordinator’s safety functions under Articles 7.2 and 9.

The contratista (main contractor) remains the employer of the workers on site and bears primary responsibility for applying the safety plan under Article 11. Contractors and subcontractors respond solidariamente (jointly and severally) for breaches of the safety plan under Article 11.2, meaning the owner can hold the main contractor accountable for subcontractor failures. The contratista must also submit the opening communication to the labour authority under Article 19 before work begins.

The trabajador autonomo (self-employed worker) has their own obligations under Article 12, including applying prevention principles, complying with the minimum safety provisions in Annex IV and following the coordinator’s instructions.

For a fuller picture of how these agents fit into the construction process, our guide to building defects and developer liability explains the LOE warranty framework, and the construction liability insurance guide covers the insurance obligations that run alongside the safety coordinator regime.

Who is qualified to be a coordinator?

RD 1627/1997 Article 2 requires the coordinator to be a “tecnico competente” (competent technician) without specifying exact degree titles in the main text. The LOE Disposicion adicional cuarta addresses this gap for building works, stating that coordinators must hold the academic and professional qualifications of arquitecto, arquitecto tecnico, ingeniero or ingeniero tecnico, according to their respective competencies and specialisations.

In practice, the project-phase coordinator on a residential building is typically an architect, while the execution-phase coordinator is typically an arquitecto tecnico (architectural technician, also known as aparejador). Both must have completed the specific prevention training required for the coordinator function, as outlined in the INSST technical guide. The same professional can hold both coordinator positions under Article 3.3, which is common on smaller residential projects.

The promotor’s architect or technical project manager can serve as coordinator on their own projects, provided they hold the required qualification. This is permitted but creates a potential conflict of interest that foreign owners should discuss with their legal advisor, particularly on larger or higher-risk projects where independent safety oversight may be advisable.

What should a property owner do before construction starts?

The practical sequence for an owner building or renovating in Spain is to establish the safety coordinator designation early, ideally at the project-design stage. If the project involves multiple designers, the project-phase coordinator must be appointed before the safety study is drafted. The execution-phase coordinator must be appointed before any contractor begins work on site, or as soon as it becomes clear that more than one enterprise or self-employed worker will participate.

The owner should confirm in writing that the designated coordinator holds the required professional qualification and has received the specific prevention training. The safety study or basic study must be incorporated into the project before the colegio profesional (professional body) will visa the project for licence purposes under Article 17, and its budget must appear as a distinct chapter in the overall project budget under Article 5.4.

The contractor’s safety plan must be approved by the execution-phase coordinator before site work begins (Article 7.2), and the contractor must submit the opening communication to the labour authority under Article 19 with the approved plan attached. The libro de incidencias must be on site from day one, held by the coordinator or, when no coordinator is required, by the direccion facultativa.

Owners undertaking renovation work should also read our guides to refurbishment permits in Spain and appealing a planning decision, which cover the licensing framework that sits alongside the safety coordinator regime.