Building permit

A building permit is the state's checkpoint between design and site. Its issue confirms that the authority has examined the submission and found it acceptable under the applicable regulations — which is not the same as confirming the design is good, only that it is lawful to build. What is reviewed, by whom and how deeply varies enormously: some systems check zoning and life safety and rely on the designer's professional liability for the rest; others, including the state-examination systems of the CIS, review the engineering substance and the cost estimates before a permit can exist.

Permits also come with conditions — inspections at defined stages, restrictions on hours or methods, requirements to be discharged before occupancy — and in many systems large projects are permitted in slices, with early-works or foundation permits allowing site start before the full approval lands.

The scheduling failure is treating the permit as an administrative formality with a known duration. Review cycles are iterative, resubmission clocks restart, and a project that plans permit issue as a fixed date rather than a process with feedback loops usually discovers the difference on its baseline schedule.