Defined by Local Zoning and Planning Regulations
The expiration dates of existing entitlements—such as rezoning approvals, conditional use permits (CUPs), variances, or site plan approvals—are typically set by local ordinances. These timelines specify how long an approval remains valid before it must be acted upon.

• Typical validity period: 12 to 36 months from the date of approval
  
• If construction or use does not commence within that window, entitlements may expire
  
• Some jurisdictions allow automatic extensions or phase-based implementation
  

Tracked Through Approval Documents and Permit Records
Expiration dates are listed in the original planning commission resolutions, city council decisions, or permit approval letters. These documents define the approval timeline and any deadlines for permit issuance, groundbreaking, or project completion.

• CUPs and site plans often include sunset clauses requiring action by a certain date
  
• Development agreements may outline specific performance milestones
  
• Zoning verification letters or entitlement summaries often list expiration dates clearly
  

Extensions May Be Available by Request
Many jurisdictions allow applicants to request extensions before the entitlement expires, but they must apply within a certain timeframe and show good cause (e.g., financing delays, infrastructure work).

• Extension requests usually range from 6 to 24 months
  
• Additional public hearings or administrative review may be required
  
• Failure to extend before expiration may require a full reapplication process