Why is there an expiration on digitally signed-sealed plans and how does that work for permitting?

Because a digitally sealed plan can be copied and reused while maintaining the digital signature certification, plans produced by engineering express that are not site-specific are encoded with limitations of use that restrict their use for permitting to a single project.

Engineering Express encodes master plans with the permitting contractor, zip code restriction, and a date at which the permit must be applied for using that plan.  If any of these three items don’t fit the intended permit, the digitally signed & sealed file is not to be used to obtain a permit.


  1. If the date needs to be extended beyond the expiration for the intended permit, click here to contact the office & discuss your needs or start a chat with us.
  2. The zip code restriction validates a small geographic region for use while maintaining master plan sheet status and not creating a site-specific project.  Site-specific projects require more engineering design & liability and are quoted separately.

Last Update: February 4, 2022  

August 30, 2021  Company  
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