After completion of a house in 2016, defects in its public parts were already identified in the takeover protocol. The property developer denied any responsibility for these defects. We filed the warranty claim in good time before the warranty period expired. With ruling of the Vienna District Court for Commercial Matters, the property developer was ordered to carry out a correction of the defects according to clear specifications at its own expense and to reimburse the costs of the proceedings. The property developer has waived its right to appeal. Through our successful intervention we have avoided that our clients have to bear the financial burden of correction of the defects and constantly increased maintenance costs.