The plumbing permit expires _____ year after date issued if work has not begun.

• A. One year
• B. Two years
• C. Six months
• D. Three months

Answer: (A)

The key idea is that a plumbing permit has a limited window to activate. Permits are issued to authorize work under current codes, inspections, and conditions, but they shouldn’t sit unused indefinitely. Requiring work to begin within a set period keeps approvals current and ensures plans aren’t carried forward past changes in codes or site conditions. One year is the typical window, so if no work starts within that year, the permit expires. This prevents tying up the permit system and encourages progress or a fresh review under updated requirements. Shorter windows (six months, three months) would be too restrictive, and a much longer window (two years) would risk outdated approvals.