What is the period in which construction must commence after the issuance of a building permit?

The correct answer indicates that construction must commence within one year after the issuance of a building permit. This timeframe is established to ensure that construction activities are initiated in a timely manner following the approval of the necessary plans and compliance with applicable building regulations.

The one-year period allows builders sufficient time to organize resources, secure funding, and undertake the scheduling required for the construction process while still ensuring that the permit remains valid. It also helps to maintain oversight of the construction project within a reasonable timeframe, allowing for any regulatory updates or changes in building codes to be considered before work begins.

Other options suggest shorter or longer timeframes, which would not align with the typical standards in many building codes and practices. Insufficient timeframes could lead to delays in starting projects or unnecessary extensions and complications, while overly lengthy periods could create challenges in ensuring that the approved plans remain relevant and that projects adhere to evolving standards.