The letters at the top of a solicitation tell you how the award will be decided, and therefore whether it is worth your time. Getting this wrong wastes days preparing the wrong kind of response.
| Type | What it means |
|---|---|
| ITB / IFB | Invitation to Bid / Invitation for Bids. Price competition on a defined scope. Lowest responsive, responsible bidder wins. The most common form for construction. |
| RFP | Request for Proposals. Evaluated on multiple criteria including approach, qualifications and price. Award goes to best value, not necessarily lowest cost. |
| RFQ | Request for Quotes, or in some agencies Request for Qualifications. Two different things sharing an acronym — read the document. |
| RFI | Request for Information. Market research. No contract is awarded from an RFI. |
| ITN | Invitation to Negotiate. Used in Florida state procurement. Allows negotiation with shortlisted respondents. |
An Invitation to Bid, or Invitation for Bids, means the agency knows exactly what it wants and has specified it in detail. The drawings and specifications define the scope. Your job is to price it.
Award goes to the lowest responsive and responsible bidder, and both words carry weight. Responsive means your bid complied with the requirements — correct forms, required bond, acknowledged addenda, submitted before the deadline. Responsible means you are capable of performing — properly licensed, adequately bonded, with relevant experience.
A bid that is low but non-responsive is rejected, and the second-lowest wins. Trivial omissions have cost contractors substantial contracts, which is why the submission checklist deserves as much attention as the number.
ITBs are the most accessible route into public work for a trade contractor. There is no subjective evaluation, no presentation, no relationship advantage. If you are qualified and your number is lowest, you win.
The corresponding risk is that price is the only lever, so margins on competitive public work are thin and discipline about which jobs to chase matters more than usual.
A Request for Proposals is used where the agency knows the outcome it wants but not precisely how to achieve it, or where factors beyond price genuinely matter.
Proposals are scored against published criteria — typically technical approach, relevant experience, key personnel, schedule, and price as one weighted factor among several. The published weighting tells you what the agency actually cares about, and it is worth reading before deciding whether to respond.
RFPs take substantially more effort than ITBs. You are writing a document, not filling in a number, and a serious response can consume days. The compensation is that a well-qualified firm with a strong approach can win without being cheapest.
Sometimes. RFPs suit firms with genuine differentiation — specialised experience, unusual capability, a track record on similar facilities. They suit firms with capacity to write a real proposal.
They suit less well a small firm competing on efficiency and price, where the hours spent writing would be better spent bidding three ITBs.
In some agencies RFQ is a Request for Quotes — an informal price solicitation for smaller purchases below the threshold requiring a formal bid. Fast, light on paperwork, awarded on price.
In others it is a Request for Qualifications — a first-stage submission of credentials, with no pricing at all, used to shortlist firms who are then invited to submit proposals. Common for professional services and design-build.
The same three letters, entirely different responses. The document body always makes clear which is meant.
A Request for Information is market research. The agency is exploring what is available, what it might cost, and who is out there before deciding how to procure.
No award comes from an RFI. Responding takes modest effort and has one real benefit: it puts your firm in front of the agency before the actual solicitation, and RFI responses sometimes influence how the eventual scope is written.
The Invitation to Negotiate is used in Florida state procurement where the agency wants the ability to negotiate terms with one or more respondents rather than accepting fixed submissions.
It is more common for services than for straightforward construction, but it appears often enough in Florida solicitations that a contractor should recognise the acronym.
Whatever the type, read it in this sequence and you will waste far less time:
Contractors habitually read scope first because it is the interesting part. Reading eligibility and deadlines first saves the hours spent on work you were never able to pursue.
Every Daily Bid Alert names the solicitation type and the deadline in the first line, so you know whether it is a price competition or a proposal before you open anything.
Agencies amend solicitations after posting, by addendum. Addenda change scope, extend or move deadlines, answer questions from other bidders, and occasionally alter the award basis.
Most solicitations require you to acknowledge every addendum in your submission. Failing to acknowledge one is a classic responsiveness failure and it has disqualified more bids than bad pricing has.
Check for addenda immediately before submitting, not when you start work. On a three-week solicitation, the important addendum frequently lands in the final week.
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