An NTP is the government telling a contractor to go. It is the single clearest way to cut through ambiguity about whether work can start, and it carries real consequences for both sides. Here is how to use them well.
A Notice to Proceed is a written, signed direction from the contracting officer to the contractor that authorizes the contractor to begin a specific activity under the contract. The two essentials are that the NTP comes from the CO, and that it is in writing. Everything else is variation on those two points.
In construction, the NTP is a central administrative tool because most construction contracts use FAR 52.211-10, Commencement, Prosecution, and Completion of Work, which says the contractor begins work within a specified number of days after receiving the NTP and completes work within a specified number of days after the same NTP. The NTP is the starting gun for the performance clock. Until the contractor has the NTP in hand, the contract period of performance has not started running.
NTPs also show up outside construction. Any contract can use them wherever the CO wants to formally authorize a specific action. In construction they are the norm, and that is the context this training focuses on, but the same principles apply anywhere you need to say "go" on the record.
On a typical construction project you may issue more than one NTP over the life of the contract. Each one authorizes a specific activity and starts (or continues) a specific clock. The most common patterns:
| NTP type | What it authorizes |
|---|---|
| Submittals NTP | Authorizes the contractor to begin preparing and transmitting required submittals (shop drawings, product data, schedules, safety plans) before ground is broken. Useful when you want the paperwork in motion while the rest of the pre-construction items are still being finalized. |
| Construction NTP | The big one. Authorizes the contractor to mobilize to the site and begin physical construction work. This is the NTP that triggers the FAR 52.211-10 period of performance for most contracts, and it is the date liquidated damages get measured from. |
| Mobilization-only NTP | Authorizes the contractor to get equipment, personnel, and temporary facilities on site, but not to begin permanent work. Useful when access, utilities, or permits are still being worked out and you want the contractor staging rather than waiting. |
| Phased NTP | Authorizes a specific phase or work package to begin while other phases remain on hold. Common on projects with access constraints, funding increments, or sequential areas that become available at different times. |
| Activity-specific NTP | Authorizes a single specific action that is otherwise unclear, such as "proceed with the revised foundation work described in RFI 27" or "proceed with testing the alternate materials identified in submittal SUB-014." |
The list above is not exhaustive. The point is that an NTP can be as broad as "start the whole project" or as narrow as "do this one specific thing." Narrow NTPs are often the most useful, because narrow problems are where ambiguity lives.
When you issue an NTP, you are formally directing the contractor to take an action. If the contractor takes that action and something goes sideways because of the direction, the government may be on the hook for the consequences. That is the legal meaning of "direction" in contract administration.
Concretely, an NTP can become the reference point for:
| If this happens | The NTP is where it gets measured from |
|---|---|
| Compensable delay claims | The contractor alleges the government directed work that was later impeded or suspended. The delay window starts when the NTP was issued and the contractor began performing in reliance on it. |
| Liquidated damages | Performance time runs from NTP under FAR 52.211-10. If you issued the NTP late, the performance clock started late, and the contractor may argue the completion date should move with it. |
| Differing site conditions | If you issue an NTP for specific work after a differing site condition is identified but before a formal modification is priced, you may have directed the changed work informally and created a compensable claim. |
| Acceleration and constructive changes | A narrow NTP that directs the contractor to perform a specific activity out of sequence can constitute directed acceleration or a constructive change. Both of those have pricing consequences. |
The mirror image is also true. Withholding an NTP when one is appropriate can itself cause delay and create a claim. A contractor who is ready to perform, waiting on a government decision, and running up standby costs is building a delay claim every day the NTP does not arrive. The right posture is to issue NTPs deliberately but not hesitantly. Know what you are directing, document it, and send it.
The real value of an NTP is not the clauses it cites. It is the clarity it creates. Whenever there is any question about whether a contractor should make a move, an NTP answers the question on the record. The alternative, which is a verbal go-ahead in a phone call or a vague "yes go ahead" in an email thread, leaves the record ambiguous and shifts responsibility in ways that are hard to predict later.
Common ambiguity situations where a written NTP is the right call:
In all of these cases, a verbal answer from the CO or the COR might resolve the practical question in the short term, but it leaves the record unclear and creates room for dispute later. A written NTP, even a short one, nails down exactly what was authorized, when, and by whom. The same act that protects the contractor also protects the government.
A good NTP is short. It is not a legal brief. It does three things and then stops.
| Element | What it contains |
|---|---|
| Identify the contract | Contract number, contractor name, project title or description, and the contract clause being invoked if relevant (usually FAR 52.211-10 for the primary construction NTP). |
| Name the activity | Be specific about what is being authorized. "Proceed with construction" on a complex project is vague. "Proceed with the work described in the contract, effective [date]" is cleaner. For narrow NTPs, name the specific activity, document, RFI, or work package. |
| State the effective date | The NTP must have an effective date from which the contractor can measure their performance period or specific work start. This is the date the clock starts. |
A few things a good NTP deliberately does not do. It does not change the contract scope, because a modification does that. It does not price out impacts, because a modification does that too. It does not waive any rights, because the waiver would not be effective from an NTP anyway. It stays in its lane as an administrative direction to start a specific activity, and everything else gets handled through the right instrument.
See the Show Me tab for three working templates that cover the most common situations. Each is short enough to adapt in a few minutes.
Three templates you can adapt. The first is the standard construction NTP that starts the FAR 52.211-10 clock. The second is a submittals-only NTP you would issue at award, before the construction NTP, so the contractor can get the submittal process moving. The third is a narrow activity-specific NTP for an ambiguity situation after construction has already started.
Template 1: Construction NTPIn accordance with Contract No. W91234-26-C-0055 and the clause at FAR 52.211-10, Commencement, Prosecution, and Completion of Work, you are hereby directed to proceed with the work specified in the contract.
Effective date: 11 May 2026. The period of performance begins on this date. Substantial completion is required within 240 calendar days of the effective date, in accordance with the contract.
All submittals, safety documentation, and pre-construction deliverables required by the contract must be in place before beginning the work items for which they are a prerequisite. Direct all operational coordination to the Contracting Officer's Representative, [name], at [email/phone]. Direct all contractual matters to the undersigned.
Reference Contract No. W91234-26-C-0055, awarded 18 April 2026. You are hereby authorized to proceed with the preparation and transmittal of all submittals required by the contract, including but not limited to shop drawings, product data, safety plans, quality control plans, and the construction progress schedule required by FAR 52.236-15.
This notice is limited to submittal activities only. It does not authorize the contractor to mobilize to the site or begin any physical construction work. A separate Notice to Proceed for construction will be issued under Contract Clause FAR 52.211-10 once pre-construction coordination items are complete.
Transmit all submittals through [specify system or POC]. Direct questions on submittal content to the Contracting Officer's Representative, [name], at [email/phone]. Direct contractual questions to the undersigned.
This letter addresses the ambiguity raised in RFI-027 concerning the revised foundation work at the northeast corner of Building 742, following the differing site condition identified during excavation on 08 July 2026.
You are hereby directed to proceed with the revised foundation work described in the attached sketch, dated 12 July 2026, and referenced in RFI-027. This direction applies only to the revised foundation work in the identified area and does not alter any other provision of the contract.
Effective date: 15 July 2026. Any cost and schedule impacts associated with this direction will be addressed through a subsequent bilateral modification. This letter does not waive either party's rights to claim or dispute those impacts, and it does not establish the final scope, schedule, or price of the modification, which remains under negotiation.
Direct operational coordination to the Contracting Officer's Representative, [name], at [email/phone]. Direct contractual matters to the undersigned.
All three templates share the same basic structure: identify the contract, name the activity, state the effective date, route the communication lanes, and sign. Everything else is specific to the situation. When you are writing your own NTPs, start from the skeleton and adapt.
Five scenarios to test your footing on NTPs. Feedback appears after each submission.
You awarded a construction contract with FAR 52.211-10 on 14 April 2026. The contract says substantial completion is required within 240 days. You issue the NTP on 05 May 2026, effective 11 May 2026. When does the 240-day period begin to run?
A differing site condition was uncovered on day 42 of construction. The contractor calls the CO and asks whether they should continue working in the affected area while a modification is negotiated. The CO verbally says "yeah, go ahead and keep going." The contractor continues. Three weeks later, the modification has not been signed and both sides are disputing the cost. What went wrong?
You just awarded a construction contract and the contractor wants to start preparing submittals immediately while you work out final pre-construction coordination items (site access, utility shutoffs, environmental clearances) that will not be resolved for another two weeks. What is the cleanest way to authorize submittal work without starting the FAR 52.211-10 performance clock?
Which statement best captures the relationship between NTPs and government responsibility?
A project manager drafts an NTP with the sentence: "You are hereby authorized to proceed, subject to final agreement on price." You are reviewing it before signature. What should you do?