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The Wkb and Consequence Class 1 (Gevolgklasse 1)
What is the Wkb, and when do you need a kwaliteitsborger?
Short answer: The Wet kwaliteitsborging voor het bouwen (Wkb) — the Quality Assurance for Construction Act — moves quality control for simple buildings (consequence class 1) from the municipality to an independent, private kwaliteitsborger. Instead of an omgevingsvergunning for the technische bouwactiviteit, you file a bouwmelding, and at the end a gereedmelding with the kwaliteitsborger's dossier.
Which buildings fall under consequence class 1?
Consequence class 1 covers relatively simple, low-risk buildings: detached and terraced homes (new build and certain renovations), small commercial buildings up to a limited height, and small-scale infrastructure works. [VERIFY: exact, current scope and any exceptions — check with the Toelatingsorganisatie Kwaliteitsborging Bouw (TloKB) or IPLO, since the rollout of consequence classes 2 and 3 may have extended the scope since publication.] An extension with a roof terrace on a terraced home, for instance, can also fall under consequence class 1, even though it adds a second storey.
When is a kwaliteitsborger required?
As soon as your building plan involves a technische bouwactiviteit in consequence class 1, engaging a certified kwaliteitsborger is mandatory — replacing the preventive review that previously sat with the municipality. The kwaliteitsborger:
Prepares a risk assessment up front: which parts of the design carry risk for meeting the Bbl?
Prepares a quality-assurance plan: how compliance with the Bbl will be verified during construction.
Inspects during construction and records findings.
Issues a declaration, after completion, that the building (with any deviations) meets the Bbl, as part of the dossier bevoegd gezag.
How does this relate to the bouwmelding and gereedmelding?
The bouwmelding and gereedmelding are the administrative steps toward the municipality; the kwaliteitsborger is the party that carries out the substantive review underpinning them. See the dedicated bouwmelding and gereedmelding page for the full procedure and timelines.
Related pages
Bouwmelding and Gereedmelding
What Is the Bbl?
How Is a Building Plan Assessed?
Struck helps kwaliteitsborgers and developers quickly determine which Bbl level applies to a project
