First establish the applicable procedure
IPLO guidance checked on 3 October 2026 states that the system applies to building activities in consequence class 1 under its stated conditions; alterations are currently excluded. Further exceptions also exist. Do not classify a project solely from a label such as house or extension. Check official information and the Omgevingsloket for the applicable route, seek clarification where necessary and record the date of the check.
Agree who supplies each item of evidence
Where a quality assurer is involved, ask early what structural information and coordination points are needed. The engineer designs the agreed elements; this does not automatically cover all other project records. Assign collection of supplier data and coordination of changes. A clear document list helps avoid a situation where calculations are complete but other necessary evidence is still missing when the next stage is planned.
Keep design and construction records aligned
Agree how construction deviations are reported and what records are needed before elements are concealed. Use identifiable sheet numbers and revisions in correspondence. A supplier declaration, photograph or calculation answers a particular question; they are not interchangeable. Establish which final document set you retain at completion. This general guide does not determine whether your specific project meets every procedural condition.
Practical checklist
- Check current applicability
- Create a document schedule
- Agree inspection and handover points
- Keep final revisions
Structural calculations do not automatically make a project ready for a building or completion notification.
Preparing your own project
Would you like this assessed for your home? See our information about new builds. It explains which information is relevant to that brief. The project check helps you prepare your enquiry.
Unsure about a term? The structural glossary provides plain-language explanations and technical context. To understand how the documents are organised, explore our fictional example project .
Official information
Check the current situation through the Omgevingsloket and IPLO guidance on technical building and spatial planning.
Background and sources
Sources checked on 3 October 2026. This guide is not a project-specific assessment.
Editorial guide • updated 3 October 2026. General information; not a project-specific assessment.