Modification Forms

Lease Amendment

Used to formally amend an existing GSA lease agreement. It documents changes to lease terms including rental rates, space configurations, lease duration extensions, or modifications to building services. GSA-1217 is the leasing equivalent of SF-30 for contract modifications.

Amendment of Solicitation/Modification of Contract

Used to amend solicitations before award or to modify contracts after award. This is one of the most frequently used procurement forms in government contracting. It documents changes to scope, price, delivery schedules, terms, or any other contract provisions. Both bilateral and unilateral modifications use this form.

Stop-Work Order

Authorizes the contracting officer to issue a stop-work order directing the contractor to suspend all or part of contract work. The order can last up to 90 days and requires the government to either terminate or resume work. Contractors may be entitled to equitable adjustment for increased costs caused by the stop-work order.

Changes — Fixed-Price

The Changes clause for fixed-price contracts, authorizing the contracting officer to make unilateral changes to drawings, designs, specifications, method of shipment, and place of delivery. If a change increases or decreases the contract cost, the contractor is entitled to an equitable adjustment in price and/or delivery schedule.

Termination for Convenience of the Government (Fixed-Price)

Provides the government's right to terminate a fixed-price contract for convenience at any time. Upon termination, the contractor is entitled to payment for completed work, costs incurred for work in progress, and a reasonable profit on work performed. The contractor must submit a termination settlement proposal.