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48 CFR · Federal Acquisition Regulation and Defense supplement

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The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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96 sections with “extension”: the first 40

  • FAR 52.211-13 Time Extensions.
    As prescribed in 11.503(c), insert the following clause: Time Extensions (SEP 2000) Time extensions for contract changes will depend upon the extent, if any, by which the changes cause delay in the completion of the various elements of co…
  • FAR 37.111 Extension of services.
    …lays are bid protests and alleged mistakes in bid. In order to avoid negotiation of short extensions to existing contracts, the contracting officer may include an option clause (see 17.208(f)) in solicitations and contracts which will enabl…
  • FAR 17.605 Award, renewal, and extension.
    …e whether meaningful improvement in performance or cost might reasonably be achieved. Any extension or renewal of an operating and management contract must be authorized at a level within the agency no lower than the level at which the orig…
  • FAR 22.404-5 Expiration of project wage determinations.
    …work expires after bid opening but before award, the contracting officer shall request an extension of the project wage determination expiration date from the Administrator, Wage and Hour Division. The request for extension shall be support…
  • FAR 31.205-6 Compensation for personal services.
    …all fund pension costs by the time set for filing of the Federal income tax return or any extension. Pension costs assigned to the current year, but not funded by the tax return time, are not allowable in any subsequent year. For nonqualifi…
  • FAR 22.404-6 Modifications of wage determinations.
    …inations at SAM.gov before award, shall be effective for any resultant contract unless an extension of the 90-day period is obtained from the Administrator, Wage and Hour Division. An agency head may request such an extension from the Admin…
  • FAR 52.203-12 Limitation on Payments to Influence Certain Federal Transactions.
    …r an employee of a Member of Congress in connection with the award of this contractor the extension, continuation, renewal, amendment, or modification of this contract. (1) The term appropriated funds does not include profit or fee from a …
  • FAR 52.249-10 Default (Fixed-Price Construction).
    … that will insure its completion within the time specified in this contract including any extension, or fails to complete the work within this time, the Government may, by written notice to the Contractor, terminate the right to proceed wit…
  • DFARS 252.217-7009 Default.
    …f the supplies or to perform the services within the time specified in a job order or any extension; (2) Make progress, so as to endanger performance of the job order; or (3) Perform any of the other provisions of this agreement or a job …
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    …where such filing has been prohibited by a Secrecy Order. (4) The Contractor may request extensions of time for disclosure, election, or filing under paragraphs (c)(1), (2), and (3) of this clause. The Contracting Officer will normally gra…
  • DFARS 252.236-7005 Airfield safety precautions.
    …of the runway centerline); (ii) The clear zone beyond the ends of each runway, i.e., the extension of the primary surface for a distance of 1,000 feet beyond each end of each runway; (iii) All taxiways, plus the lateral clearance zones al…
  • FAR 3.907-6 Remedies and enforcement authority.
    … of a complaint in accordance with section 1553 of the Recovery Act, or in the case of an extension of time in accordance with section 1553 of the Recovery Act, within 30 days after the expiration of the extension of time; or (C) Decides i…
  • FAR 8.705-4 Compliance with orders.
    …e experienced by its AbilityOne participating nonprofit agencies to minimize requests for extensions once the ordering office places an order. (b) The ordering office shall grant a request by a central nonprofit agency or AbilityOne partic…
  • FAR 9.407-4 Period of suspension.
    …t Attorney General, U.S. Attorney, or other responsible prosecuting official requests its extension, in which case it may be extended for an additional 6 months. In no event may a suspension extend beyond 18 months, unless legal proceedings…
  • FAR 13.303-3 Preparation of BPAs.
    …er. (v) Itemized list of supplies or services furnished. (vi) Quantity, unit price, and extension of each item, less applicable discounts (unit prices and extensions need not be shown when incompatible with the use of automated systems, p…
  • FAR 13.305-4 Procedures.
    …at an imprest fund or third party draft purchase has been made; (ii) The unit prices and extensions; and (iii) The supplier's name and address; and (2) Require the supplier to include with delivery of the supplies an invoice, packing sli…
  • FAR 17.204 Contracts.
    … supplies or services, or the overall duration of the term of the contract, including any extension. (b) The contract shall state the period within which the option may be exercised. (c) The period shall be set so as to provide the contra…
  • FAR 17.208 Solicitation provisions and contract clauses.
    …preliminary written notice of its intent to extend the contract. (2) A statement that an extension of the contract includes an extension of the option. (3) A specified limitation on the total duration of the contract.
  • FAR 19.302 Protesting a small business representation or rerepresentation.
    … days after receipt of a protest or request for a formal size determination or within any extension of time granted by the contracting officer the SBA Area Office will determine the size status of the challenged concern. The SBA Area Office…
  • FAR 19.308 Protesting a firm's status as an economically disadvantaged women-owned small business concern or women-owned small business concern eligible under the Women-Owned Small Business Program.
    …s of the status protest within 15 business days after receipt of a protest, or within any extension of that time granted by the contracting officer. (3) If SBA does not issue its determination within 15 business days, or within any extensi…
  • FAR 33.104 Protests to GAO.
    …n dismissed; or (B) Authorizes a longer period in response to an agency's request for an extension. Any new date is documented in the agency's file. (ii) When a protest is filed with the GAO, and an actual or prospective offeror so reques…
  • FAR 42.302 Contract administration functions.
    …canceled. (64) Negotiated and execute one-time supplemental agreements providing for the extension of contract delivery schedules up to 90 days on contracts with an assigned Critically Designator of C (see 42.1105). Notification that the c…
  • FAR 52.211-18 Variation in Estimated Quantity.
    …increase in the time necessary for completion, the Contractor may request, in writing, an extension of time, to be received by the Contracting Officer within 10 days from the beginning of the delay, or within such further period as may be g…
  • FAR 52.242-15 Stop-Work Order.
    …a period of 90 days after a stop-work order is delivered to the Contractor, or within any extension of that period to which the parties shall have agreed, the Contracting Officer shall either— (1) Cancel the stop-work order; or (2) Termin…
  • FAR 52.243-7 Notification of Changes.
    …h the Government is responsible, the equitable adjustment shall include the cost and time extension for delay reasonably incurred by the Contractor in attempting to comply with the defective drawings, designs or specifications before the Co…
  • FAR 52.249-2 Termination for Convenience of the Government (Fixed-Price).
    …fy it, a termination settlement proposal may be received and acted on after 1 year or any extension. If the Contractor fails to submit the proposal within the time allowed, the Contracting Officer may determine, on the basis of information …
  • FAR 52.249-3 Termination for Convenience of the Government (Dismantling, Demolition, or Removal of Improvements).
    …fy it, a termination settlement proposal may be received and acted on after 1 year or any extension. If the Contractor fails to submit the proposal within the time allowed, the Contracting Officer may determine, on the basis of information …
  • FAR 52.249-6 Termination (Cost-Reimbursement).
    …fy it, a termination settlement proposal may be received and acted on after 1 year or any extension. If the Contractor fails to submit the proposal within the time allowed, the Contracting Officer may determine, on the basis of information …
  • FAR 52.249-8 Default (Fixed-Price Supply and Service).
    …the supplies or to perform the services within the time specified in this contract or any extension; (ii) Make progress, so as to endanger performance of this contract (but see subparagraph (a)(2) below); or (iii) Perform any of the other…
  • DFARS 227.7103-13 Government right to review, verify, challenge, and validate asserted restrictions.
    …notice shall include the information in paragraph (e) of the clause at 252.227-7037. (5) Extension of response time. The contracting officer, at his or her discretion, may extend the time for response contained in a challenge notice, as ap…
  • FAR 3.905-1 Remedies.
    … after the submission of the complaint; or (2) Within 30 days after the expiration of an extension of time granted in accordance with 41 U.S.C. 4712(b)(2)(B) for the submission of the report to those stated in 3.904-2(b); and (B) There is…
  • FAR 7.400 Scope of subpart.
    …for use; and (c) Applies to both the initial acquisition of equipment and the renewal or extension of existing equipment leases or rental agreements.
  • FAR 7.401 Acquisition considerations.
    …eriod of use of the equipment: (i) Availability of purchase options. (ii) Cancellation, extension, and early return conditions and fees. (iii) Ability to swap out or exchange equipment. (iv) Available warranties. (v) Insurance, environ…
  • FAR 8.706 Purchase exceptions.
    …— (1) Initiate purchase action within 15 days following the date of the exception or any extension granted by the central nonprofit agency; and (2) Provide a copy of the solicitation to the central nonprofit agency when it is issued. (e)…
  • FAR 9.406-3 Procedures.
    … of the contractor's time to submit information and argument in opposition, including any extensions (see paragraph (b)(1) of this section). (2)(i) In actions in which additional proceedings are necessary as to disputed material facts, wri…
  • FAR 9.406-4 Period of debarment.
    …al may extend the debarment for an additional period, if that official determines that an extension is necessary to protect the Government's interest. However, a debarment may not be extended solely on the basis of the facts and circumstanc…
  • FAR 11.402 Factors to consider in establishing schedules.
    …lished for separable items of work. When multiple completion dates are used, requests for extension of time must be evaluated with respect to each item, and the affected completion dates modified when appropriate.)
  • FAR 11.503 Contract clauses.
    … delay of each separate part or stage of the work. (c) Use the clause at 52.211-13, Time Extensions, in solicitations and contracts for construction that use the clause at 52.211-12, Liquidated Damages—Construction, when that clause has be…
  • FAR 11.603 Procedures.
    …jection of rated orders (see 15 CFR 700.13); preferential scheduling (see 15 CFR 700.14); extension of priority ratings (flowdown) (see 15 CFR 700.15); changes or cancellations of priority ratings and rated orders (see 15 CFR 700.16); use o…
  • FAR 11.702 Construction contracts.
    …upon the demand of either the Government or the contractor. The contractor may request an extension of time if the quantity variation is such as to cause an increase in the time necessary for completion. The contracting officer must receive…

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.