Construction law in the Netherlands. Found a building defect after handover? Report promptly in writing. Describe each departure from agreed performance. This explanation concerns private clients under Dutch law. Compare the defect with quotation, drawings and handover report. A new liability regime applies to certain construction contracts from January first, twenty twenty-four. Have the date and applicability checked. Keep the complaint, repair period and refusal. Defect claims generally expire two years after protest, with separate starting rules for a repair period. An absolute limit may also apply. Timely assess interruption or proceedings. Take dated overview and detail photos. Agree on investigation and costs with a building expert. Do not preserve danger for evidence; document necessary emergency repairs and their reasons. Request specific repairs within a reasonable time and agree access. Reasonableness depends on work and urgency. Before hiring another contractor, assess whether a repair opportunity is still required. Assess withholding payment, replacement and dissolution separately. Discuss sound work and undisputed sums too. Bring guarantee, dispute terms and insurance cover to a construction lawyer. Read the full article and sources. General information does not replace advice about your own situation.