FAR 15.603—General.
Plain-English Summary
FAR 15.603 explains what an unsolicited proposal is, what it is not, and the basic threshold a submission must meet before an agency should treat it as a valid unsolicited proposal. The section covers the purpose of unsolicited proposals, the distinction between true unsolicited proposals and excluded items such as advertising material, commercial product or service offers, contributions, and routine technical correspondence, and the six core validity requirements: innovation and uniqueness, independent origin and development, preparation without Government supervision or involvement, enough detail to show potential value to the agency, and not being an advance proposal for a known or previously published requirement that should be competed. It also states that proposals submitted in response to a publicized general statement of agency needs are still considered independently originated, and it adds a special rule requiring agencies to evaluate energy savings performance contract proposals under 10 CFR 436.33(b). In practice, this section is the gateway for deciding whether a submission deserves the special unsolicited-proposal review process or should be handled as ordinary marketing, a commercial offer, or a competed acquisition requirement. For contractors, it sets the minimum content and origin standards needed to get serious consideration. For agencies, it helps screen out submissions that do not qualify and ensures energy-related proposals are reviewed under the correct regulatory procedure.
Key Rules
Purpose of unsolicited proposals
Unsolicited proposals are meant to bring unique, innovative ideas developed outside the Government to agencies for possible use in meeting mission needs. They are generally offered with the expectation of a contract for research and development or other mission-supporting work.
Excluded submissions
Advertising material, commercial product or commercial service offers, contributions under FAR 15.601, and routine technical correspondence are not unsolicited proposals. These items do not receive the same treatment as a true unsolicited proposal because they are not the kind of independently developed, mission-oriented submission this section addresses.
Must be innovative and unique
A valid unsolicited proposal must present something new or distinctive. If the idea is ordinary, duplicative, or merely a standard market offering, it does not meet the threshold.
Must be independently developed
The offeror must have originated and developed the proposal on its own, without Government supervision, endorsement, direction, or direct involvement. This requirement protects the integrity of the unsolicited-proposal process and distinguishes it from Government-directed work.
Must show potential value
The proposal must include enough detail for the agency to judge whether Government support could be worthwhile and whether the work could benefit the agency’s research and development or other mission responsibilities. A bare concept statement is not enough.
Cannot be a known requirement
A proposal is not valid if it is an advance proposal for a known agency requirement that can be acquired through competitive methods. It also cannot address a requirement that the agency has already published, because those needs should be handled through normal competition.
Publicized needs may still qualify
If a proposal is submitted in response to a publicized general statement of agency needs, it is still considered independently originated. This prevents agencies from rejecting a proposal solely because it was inspired by a broad public notice rather than developed in isolation.
Energy savings contracts follow special rules
Agencies must evaluate unsolicited proposals for energy savings performance contracts under the procedures in 10 CFR 436.33(b). This means the general FAR rule is supplemented by a specific energy-efficiency regulatory process.
Responsibilities
Offeror / Contractor
Prepare a submission that is truly innovative, independently developed, and detailed enough to show potential agency benefit. The offeror must avoid presenting routine marketing material, a commercial offer, or a proposal for a known competed requirement if it wants the submission treated as an unsolicited proposal.
Contracting Officer / Agency reviewers
Screen submissions to determine whether they are actually unsolicited proposals or fall into excluded categories such as advertising, commercial offers, contributions, or routine correspondence. They must also verify that the proposal meets the six validity criteria before proceeding with unsolicited-proposal consideration.
Agency
Evaluate qualifying unsolicited proposals for mission relevance and potential value, and apply the special evaluation procedures for energy savings performance contracts under 10 CFR 436.33(b). The agency must also recognize that responses to publicized general statements of needs can still be independently originated.
Practical Implications
This section is a gatekeeper: many submissions that look like proposals are not legally treated as unsolicited proposals, so contractors should not assume special review just because they sent something in.
The biggest contractor mistake is submitting a concept that is really a response to a known or published requirement; if the agency can compete the need, the unsolicited-proposal path usually is not appropriate.
Contractors should include enough technical and business detail to let the agency assess value, feasibility, and mission benefit; vague marketing language is usually insufficient.
Agencies should document why a submission does or does not qualify, because the distinction affects how the submission is handled and whether procurement rules for competition apply.
Energy-related proposals require extra attention because the FAR points agencies to a separate regulatory procedure, so reviewers should not rely on the general unsolicited-proposal rules alone.
Official Regulatory Text
(a) Unsolicited proposals allow unique and innovative ideas or approaches that have been developed outside the Government to be made available to Government agencies for use in accomplishment of their missions. Unsolicited proposals are offered with the intent that the Government will enter into a contract with the offeror for research and development or other efforts supporting the Government mission, and often represent a substantial investment of time and effort by the offeror. (b) Advertising material, commercial product or commercial service offers, or contributions, as defined in 15.601 , or routine correspondence on technical issues, are not unsolicited proposals. (c) A valid unsolicited proposal must- (1) Be innovative and unique; (2) Be independently originated and developed by the offeror; (3) Be prepared without Government supervision, endorsement, direction, or direct Government involvement; (4) Include sufficient detail to permit a determination that Government support could be worthwhile and the proposed work could benefit the agency’s research and development or other mission responsibilities; (5) Not be an advance proposal for a known agency requirement that can be acquired by competitive methods; and (6) Not address a previously published agency requirement. (d) Unsolicited proposals in response to a publicized general statement of agency needs are considered to be independently originated. (e) Agencies must evaluate unsolicited proposals for energy savings performance contracts in accordance with the procedures in 10 CFR436.33(b).