What is the effect of the order served under the provisions concerning unsafe buildings?

The correct interpretation is that the order served under the provisions concerning unsafe buildings is effective from the time it is posted. This means that once the order has been officially delivered and made known to the property owner, it carries legal weight immediately, regardless of whether the property owner has acknowledged or signed it. This prompt enforcement is crucial to ensure public safety and to address potentially hazardous conditions quickly.

The immediate effectiveness upon posting is designed to ensure a swift response to unsafe buildings, allowing authorities to take action without unnecessary delays. This mechanism helps to prevent further deterioration or risk to public health and safety associated with unsafe structures.

While options that suggest the need for a signature from the property owner, a grace period for compliance, or reliance on a court order could potentially seem appealing, they do not align with the urgent nature of handling unsafe buildings. The laws generally prioritize immediate action to mitigate risks, which is why an order under these provisions is effective as soon as it is posted.