Key data
| Regulation | Resolution of June 15, 2026, from the General Directorate of Quality and Environmental Assessment |
|---|---|
| Publication | June 25, 2026 |
| Entry into force | June 25, 2026 |
| Affected parties | AENA, construction contractors, public administrations involved in the airport environment |
| Category | Regulatory Changes |
| Year | 2026 |
| Urbanized area | 11,200 m² south of Terminal T4 |
| Paving | 6,676 m² |
| Type of assessment | Simplified environmental impact report (does not require ordinary assessment) |
AENA has environmental clearance to execute the urbanization of land located south of Terminal T4 at Adolfo Suárez Madrid-Barajas airport. The Resolution of June 15, 2026 from the General Directorate of Quality and Environmental Assessment, published on June 25, 2026, issues a simplified environmental impact report with a favorable result. This means the project can proceed without needing to undergo the ordinary environmental assessment procedure, a significantly longer and more costly process.
For contractors and companies in the construction and airport infrastructure sector, this resolution marks the beginning of the period when works can be tendered and awarded with full environmental coverage. The requirements imposed are specific and must be incorporated into the technical specifications.
What does this regulation establish?
The resolution formalizes the result of the simplified environmental assessment procedure for the urbanization project promoted by AENA within the airport service area. Since this is an action on land already affected by airport activity and surrounded by highways, the acoustic and atmospheric impacts are considered not significant by the resolution itself.
The project includes the following construction elements:
- Two access and internal circulation roads
- A road connection roundabout
- Paving of 6,676 m²
- Drainage system
- Road lighting
- Basic utilities (water, electricity)
During the processing, multiple public bodies were consulted. The Madrid City Council confirmed the urban planning compatibility of the project and ruled out any impact on traffic outside the airport grounds.
The requirements imposed by the resolution focus on the health sector:
| Requirement | Scope | Detail |
|---|---|---|
| Water supply | Health | Compliance with quality and supply requirements in the facilities resulting from urbanization |
| Legionella prevention | Health | Application of preventive measures in accordance with current regulations for controlling legionellosis in water facilities |
Economic and operational impact
From an operational perspective, the approval of the simplified environmental report has a direct and immediate effect: it eliminates the main regulatory uncertainty that could delay the tender for works. Since ordinary environmental assessment is not required, a procedure that in projects of this nature can take an additional 12 to 24 months is avoided.
For contractors interested in bidding for the tender, the health requirements imposed represent additional costs to be anticipated in the offer:
- Design and installation of water systems compliant with the required supply requirements
- Implementation of Legionella prevention protocols from the commissioning phase
- Possible periodic reviews and preventive maintenance of water facilities
Acoustic and atmospheric impacts do not generate additional mitigation obligations, since the resolution declares them not significant in the context of an environment already affected by airport operations and surrounding highways. This simplifies environmental compliance during the construction phase.
Who does it affect?
- AENA: project promoter, responsible for complying with and ensuring compliance with the resolution's requirements
- Civil works contractors: companies bidding for urbanization work, roads, paving, drainage and lighting
- Installation companies: plumbing specialists, supplies and water systems that must comply with health requirements on water supply and Legionella
- Concurrent public administrations: bodies consulted during processing and with competencies in the airport environment (including Madrid City Council)
- Companies located or planned in the south T4 area: future users of the urbanized roads and services who will need to adapt their operations to the new infrastructure
Practical example
A construction company bidding for the urbanization works south of T4 must incorporate in its technical and economic proposal, at minimum, the following elements directly derived from the requirements of this resolution:
- Legionella prevention plan: protocol for water treatment and control in the resulting facilities, with designation of technical responsible and maintenance records from commissioning
- Water supply project: design compliant with required health requirements, including approved materials and quality control points
- Supporting documentation: certificates and records demonstrating compliance with both requirements before AENA and competent health authorities
Since acoustic and atmospheric impacts have been declared not significant, the company will not need to include specific corrective measures in these areas, which simplifies the environmental budget of the offer.
What should companies do now?
- Civil works contractors: review the resolution and its requirements to incorporate them in the technical specifications of any offer you submit to AENA for these works. The Legionella prevention and water supply requirement is mandatory from the start of commissioning.
- Installation and plumbing companies: prepare technical documentation on Legionella prevention systems in accordance with current health regulations, as it will be required in project execution.
- AENA and its project team: transfer the health requirements of the resolution to the executive project and the tender specifications, ensuring their contractual traceability.
- Concurrent administrations: verify that their competencies in the airport environment are covered by the consultations already carried out during the simplified environmental report processing.
- User companies in the south T4 area: anticipate changes in road configuration and access that will result from the execution of the two new roads and planned roundabout.
Frequently asked questions
What specific works does the favorable environmental report authorize for T4 Barajas?
The resolution approves the urbanization of 11,200 m² south of Terminal T4, including two roads with a roundabout, paving of 6,676 m², drainage system, lighting and basic water and electricity utilities. All within AENA's airport service area.
Why is ordinary environmental impact assessment not required for this project?
Because the resolution concludes that the project does not generate significant impacts. The environment is already affected by airport activity and surrounding highways, which means that acoustic and atmospheric impacts of the works are considered not relevant. Therefore it is processed as a simplified environmental assessment, with a favorable report result.
What health requirements must contractors comply with in these works?
The resolution imposes two specific health requirements: compliance with water supply requirements in the resulting facilities and application of Legionella prevention measures in accordance with current regulations. These obligations must be incorporated into the executive project and work contracts.
Does this urbanization affect traffic outside Barajas airport?
No. The Madrid City Council confirmed during processing the urban planning compatibility of the project and expressly ruled out any impact on traffic outside the airport grounds. The action is developed entirely within the airport service area.
When does this resolution enter into force and when can the project be executed?
The resolution was published and entered into force on June 25, 2026. From that date, the project has environmental coverage to advance in its tender and execution, as long as the imposed health requirements are respected.
Official source
Consult complete regulation in official source
Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-13865