Cultural Resource Protection: Submitting a Small-Cell Undertaking for Review

The Cultural Resource Protection program within the Illinois State Historic Preservation Office (SHPO) uses a digital submission and review process. We do not accept hardcopy submissions of Regulatory projects. Click here for instrutions on how to check the status of our review of your projects.

Small-Cell undertakings require permits from the Federal Communications Commission (FCC) and, therefore, are reviewable under Section 106 of the National Historic Preservation Act.

Areas of Potential Effect (APE) for small-cell undertakings.
If the project's Areas of Potential Effect (APEs) are within or immediately adjacent to a locally designated historic district or a National Register historic district, the small-cell installations/replacements must be grouped together in a single submission. Until and unless the FCC instructs otherwise, if the existing, replacement, or new pole is equal to or less than 50 feet in height, the APE around the pole will have a 500-foot radius. If the project proposes to move an existing pole more than 100 feet/30 meters from its existing location, this office will consider the proposal to be a new pole installation. Proposed small-cells that are within a one-mile radius of each other and are a part of the same undertaking must be submitted to the SHPO together.

Electronic submission:

Email your submission to You do not have to combine the documents into one .pdf.

If your submission is 25 MB or larger in total size:

  • Place all your documents into one folder and omit any commas in the folder name
  • Compress or "zip" the folder (information from Microsoft regarding zipping files)
  • Upload the zipped folder to:, and enter "" as the recipient
  • Click on "Advanced Options" and select "15 days" as the length of time your documents will remain on the State FTP site


Your small-cell submission must contain: 

Cover letter

Maps & images

Architectural/engineering plans and specifications