- 45 viewsDuration: 2:24The NCA warns that unauthorized extensions pose a serious threat to public safety, as building foundations may not be designed to support additional floors. Developers and contractors found violating construction laws risk fines of up to Sh3 million, imprisonment for up to three years, or both. The authority says inspections will continue nationwide to ensure compliance with building regulations and prevent disasters similar to last year's fatal building collapse in Mombasa.