About Affidavit Regarding Due Diligence and Proof of Publication
Establishes that notice by publication was properly conducted for unknown or unlocatable parties in an estate proceeding, documenting diligent efforts to identify and locate them.
When you'd use it: When filing a probate petition or other pleading and notice must be given to parties whose addresses or identities cannot be determined despite reasonable investigation efforts.
Where to get the official form
The official version of Affidavit Regarding Due Diligence and Proof of Publication is published as a PDF by the Colorado courts. We checked this link and it resolved to a form on an official court or government website — always download the current version directly from the source rather than a third-party copy:
Download Affidavit Regarding Due Diligence and Proof of Publication (PDF) →
Source: coloradojudicial.gov
Link last checked: May 30, 2026
How to file Affidavit Regarding Due Diligence and Proof of Publication in Colorado
- Step 1 — Confirm you have the correct formUse Affidavit Regarding Due Diligence and Proof of Publication (JDF 714SC R9-18) when when filing a probate petition or other pleading and notice must be given to parties whose addresses or identities cannot be determined despite reasonable investigation efforts. Double-check it's the right form for your situation — Colorado probate forms are revised periodically, so verify the name and number against your court's current form list before you start.
- Step 2 — Complete every required fieldFill out Affidavit Regarding Due Diligence and Proof of Publication carefully and review it for errors before filing. Probate cases can already take months — a small mistake on the form can set your timeline back further.
- Step 3 — Get it notarized or witnessed if requiredSome probate forms must be signed in front of a notary or witnesses. Check the instructions on the form itself, and arrange notarization before you file if it's required.
- Step 4 — File it with the correct courtSubmit Affidavit Regarding Due Diligence and Proof of Publication to the probate court or county clerk handling the estate — usually in the Colorado county where the deceased lived. Ask the clerk how they prefer to receive filings (in person, by mail, or e-filing).