The justification report: the heart of the file
The central piece is the memoria justificativa (the CTE compliance report), integrated into the project report according to the documentary content the code itself establishes in its corresponding annex. Its logic is systematic: for each applicable basic document, the project states the requirements affecting it, the solutions adopted and their verification, whether by adopting the documents' solutions, by calculation with the recognised tools or through the alternative routes the performance-based regime admits.
The effective structure replicates the code's, document by document and section by section, and rests on the technical annexes where the detail lives: the energy verification with its indicators, the acoustic sheets, the structural calculation annex, the evacuation and fire provision calculations, the accessibility justifications with the regional regulation in parallel. The report narrates and concludes; the annexes prove.
Two attributes separate useful reports from decorative ones. Specificity: the report describing the real building, with its values, its applied tables and its particular cases, versus the generic template municipal technical services detect on page one. And traceability: every requirement must be traceable from the code's table to the solution, the drawing and the budget item materialising it.
Stamping and permit: the two filters
The file passes through two checks of different natures. Professional stamping (visado) by the chamber verifies the designer's identity and qualification and the project's documentary integrity, in the cases where it is mandatory, new construction and demolitions among them, under the stamping regulation in force. It is not a technical compliance check, but it is a completeness filter that stops files with incomplete documentation.
The municipal permit, or the responsible declaration regime where applicable, is the substantive control: technical services review planning compliance and the regulatory justification, with intensities varying by municipality and file type. The systematic checks coincide with the visible and the tabulated: occupancies and evacuation, accessibility, fire provisions, and increasingly the energy verification. Each correction request is a cycle of weeks; the specific, traceable report is the file's best investment in schedule.
Coherence with the quantities: where justification becomes money
For the construction economist, the justification report has a second life: it is the project's regulatory shopping list. Every declared solution, every resilient strip, every fire-stopping seal, every radon barrier, every adapted toilet aid, must have its item in the quantities, and the cross audit of report against quantities is the file's most profitable quality control, as the method of the article on the cost of CTE compliance develops.
Incoherence runs in two directions and both cost. The justified, unmeasured solution appears on site as a surprise, at surprise prices. The measured item the report does not justify is cost without cause or, worse, the trace of an earlier project version nobody cleaned up. The mature file closes the full triangle: report, drawings and quantities telling the same story.
The pre-submission checklist
| Check | Control question |
|---|---|
| Coverage | Every applicable basic document has its section, including the non-applicable ones with their why |
| Specificity | The report cites the real building's values and tables, not generic formulas |
| Annexes | Energy verification, acoustic sheets and calculations present and coherent with the report |
| Concurrent regulation | Regional accessibility and municipal ordinances justified alongside the CTE |
| Traceability to drawings | Every declared solution locatable in the graphic documentation |
| Traceability to quantities | Every declared solution with its item, and every regulatory item with its justification |
| Version coherence | Report, drawings and quantities from the same project version |
| Intervention regime | In renovation, application criteria documented as per the corresponding article |
The last row deserves underlining: in interventions on existing buildings, the justification also incorporates the non-worsening, flexibility and proportionality criteria, with the diagnosis of the initial state as the evidentiary piece, as developed in the article on the CTE in renovation. In renovation the justification runs longer than in new build.
Frequent errors
The first is the template report, generic and disconnected from the building, turning the first municipal review into a guaranteed correction request. The report is written around the specific building and its solutions.
The second is justification without annexes, conclusions without the calculations and verifications sustaining them. The calculations are attached even where the conclusion seems obvious.
The third is the two-headed project: report and quantities from different versions, with justified solutions that no longer exist and items orphaned of justification. Consistency between report and quantities is checked before submission.
The fourth is forgetting the concurrent regulation, regional accessibility above all, with the CTE impeccable and the permit stuck on the regulation nobody looked at. The regional rules are reviewed at the same time as the CTE.
The fifth is submitting without the final cross audit, the single hour of work that avoids more corrections and surprises than any other in the whole file. That review is scheduled as one more task of the submission.
Note: the required documentary content is that of the CTE in force and its documentation annex, together with the stamping and municipal processing regimes applicable in each territory.