---
title: "Prepare a change-order or time-extension claim from the site records"
url: "https://ailawframework.com/practice/construction-and-infrastructure/prepare-a-variation-or-extension-of-time-claim-from-the-site-records/united-states"
type: "task_jurisdiction_version"
site: "AI Law Framework"
id: "A11-T1-R4-US"
practice_area: "Construction & Infrastructure"
tier: "yellow"
lawyer_review: "required"
jurisdictions: ["US"]
last_reviewed: "2026-10-22"
---

# Prepare a change-order or time-extension claim from the site records

> From the daily reports, correspondence and the changes clause the lawyer designates, build a dated table of the event, the notice, the cost backup and the time asked. Draft no claim letter.

Canonical page: https://ailawframework.com/practice/construction-and-infrastructure/prepare-a-variation-or-extension-of-time-claim-from-the-site-records/united-states  
Last reviewed: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

| Fact | Value |
| --- | --- |
| Practice area | [Construction & Infrastructure](https://ailawframework.com/practice/construction-and-infrastructure.md) |
| Human involvement | Yellow: Lawyer and AI draft together |
| How AI is used | From the daily reports, correspondence and the changes clause the lawyer designates, build a dated table of the event, the notice, the cost backup and the time asked. Draft no claim letter. |
| What the lawyer must review | The claim is a contract notice. The lawyer writes it and checks every figure against the records. On a federal agency contract for commercial products or services, FAR 52.212-4(c) allows changes in the terms only by written agreement of the parties, and the clause makes the contract subject to the Contract Disputes statute, 41 U.S.C. chapter 71. For a federal construction invoice, 31 U.S.C. § 3903 is the prompt-payment timing statute, including a 30-day payment date after a proper invoice where the contract sets no specific date, with the exceptions in that section. A Miller Act payment bond, where 40 U.S.C. § 3131 requires one, is a separate route from a change order. Formal Opinion 512 requires the lawyer to verify generated dates and section numbers. |
| Written for | United States |
| Applies to | [Prepare a variation or extension-of-time claim from the site records](https://ailawframework.com/practice/construction-and-infrastructure/prepare-a-variation-or-extension-of-time-claim-from-the-site-records.md) |

## Checking plan

- What the AI does: From the daily reports, correspondence and the changes clause the lawyer designates, build a dated table of the event, the notice, the cost backup and the time asked. Draft no claim letter.
- Basis: Checked against the linked sources on 22 October 2026. Confirm the current instrument before reliance.

## Notes

- FAR 52.212-4 is the commercial-items clause. A construction changes clause, such as FAR 52.243-4, is a different clause and was not the text opened for this version.
- State private work uses the contract and that state’s lien and prompt-pay statutes, not the federal Prompt Payment Act.

## Sources

- [FAR 52.212-4, Contract Terms and Conditions—Commercial Products and Commercial Services](https://www.acquisition.gov/far/52.212-4) (checked 2026-10-22)
- [31 U.S.C. § 3903, regulations on payment dates](https://www.law.cornell.edu/uscode/text/31/3903) (checked 2026-10-22)
- [40 U.S.C. § 3131, bonds of contractors of public buildings or works](https://www.law.cornell.edu/uscode/text/40/3131) (checked 2026-10-22)

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*