The Affidavit of Diligence Checklist Every Utah Attorney Should Use
A diligence affidavit is only as strong as its documentation. Here's a working checklist for what a Utah affidavit of diligence needs to hold up under scrutiny.
An affidavit of diligence is the evidentiary backbone of any Rule 4(d)(5) alternate-service petition, and it is scrutinized far more closely than a routine return of service — both by the judge deciding whether to grant the petition, and potentially by a later Rule 60(b) motion challenging the resulting judgment. This checklist covers what a strong diligence affidavit in Utah needs to include.
Why Diligence Affidavits Get Extra Scrutiny
Alternate service is, by design, a departure from the preferred methods of personal or substitute service — it is granted only when a court is satisfied that ordinary service genuinely could not be accomplished. A weak diligence record undermines that finding at the outset, and if a default judgment later results from the alternate service, a thin diligence affidavit becomes the single easiest target for a motion to set the judgment aside.
The Checklist
1. Attempts at Every Known Address
The affidavit should document attempts at the defendant's residence and, if applicable, a known workplace or secondary address — not just the single address listed in the case file. If only one address was tried, the affidavit should explain why no other addresses were identified as relevant.
2. Varied Timing
Multiple attempts, all made at the same time of day, tell a court less than attempts spread across mornings, evenings, and weekends. Document the specific date and time of each attempt.
3. Verification the Address Is Actually Connected to the Defendant
An affidavit is far stronger if it shows the server took a step to confirm the address was current — a conversation with a neighbor, a landlord inquiry, a database or public-record check — rather than simply attempting the address provided without any independent verification.
4. Specific, Contemporaneous Notes Per Attempt
Each attempt entry should note what the server actually observed: no answer, lights on but no response, a vehicle present matching the defendant's registration, a neighbor's statement, mail visibly piling up, or similar. Vague entries ("attempted service, unsuccessful") carry far less weight than specific, dated observations.
5. Any Skip-Tracing Steps Taken
If the original address turned out to be stale, the affidavit should document the skip-tracing methodology used to locate a better address — through licensed database sources compliant with the Fair Credit Reporting Act and Driver's Privacy Protection Act — and the outcome of that research.
6. A Clear Timeline
Present attempts in chronological order with exact dates, so a judge reading the affidavit can see the diligence effort unfold over time rather than piecing it together from a summary.
7. Sworn, Notarized Execution
Like any affidavit submitted to the court, it must be executed under oath before a notary. An unsworn summary of attempts, however detailed, does not carry the same evidentiary weight.
Sample Structure
| Section | Content |
|---|---|
| Introduction | Server's identity, authorization to serve, case identification |
| Address(es) attempted | Each address, with source of the address noted |
| Chronological attempt log | Date, time, location, and specific observations for each attempt |
| Verification steps | Any independent confirmation of address accuracy |
| Conclusion | Server's sworn statement that diligent effort was made and service could not be effected |
Language Patterns That Weaken an Affidavit
Certain habits of phrasing consistently undercut otherwise adequate diligence. Conclusory statements ("the defendant is evading service") assert the conclusion the court is supposed to draw, rather than supplying the facts that support it. Aggregated entries ("service was attempted on numerous occasions during March") strip out the dates and times a judge needs. Hedged observations ("the defendant appeared to be avoiding contact") invite the question of what was actually observed. The stronger pattern in every case is the same: state what the server saw, when, and let the inference follow.
Keeping the Log Contemporaneously
The single largest quality difference between diligence affidavits is whether the underlying log was kept at the time of each attempt or reconstructed afterward. A contemporaneous record — captured in the field with the date, time, and location recorded automatically — supports specific detail that memory simply cannot supply weeks later. It also holds up better under cross-examination, because the server is testifying from a record rather than a recollection. Where GPS coordinates and timestamped photographs are captured on each attempt, the affidavit gains independent corroboration for every entry in the timeline rather than resting entirely on the server's word.
How This Connects to the Underlying Petition
The diligence affidavit is an exhibit, not a substitute for the petition itself — the petition should reference and rely on the affidavit's specific facts rather than merely attaching it and asserting diligence in general terms. Judges reviewing 4(d)(5) petitions respond better to petitions that walk through the affidavit's timeline explicitly.
Need a documented diligence log built into every attempt from day one, not assembled after the fact? Call {{office_phone}} or request service online and we'll structure the attempt log to support a 4(d)(5) petition if it becomes necessary.
Category: Legal Resources · Published: 2026-10-12 · 4 min read · By Christopher Zamora, Rocky Mountain Protective Group