RFP versus ITB
An invitation to bid (ITB or IFB) asks for a price against complete documents. In federal sealed bidding, award goes to the responsible bidder whose conforming bid is most advantageous considering only price and price-related factors (FAR 14.408-1). A request for proposal (RFP) asks for price plus non-price factors, and allows discussion and tradeoffs. Many state and local owners follow similar logic under their own procurement codes, and private owners use RFPs to compare contractors on more than price.
| Method | How award is decided | Where effort pays |
|---|---|---|
| ITB / sealed bid | Lowest responsive, responsible price | Takeoff accuracy, complete forms, no qualifications |
| RFP, lowest price technically acceptable (LPTA) | Lowest price among proposals that meet the stated acceptability standards | Pass/fail compliance, then price |
| RFP, tradeoff (best value) | Price weighed against stated non-price factors; owner may pay more for a better proposal | Approach, team, past performance, plus a defensible price |
| Two-phase design-build (federal) | Phase one on qualifications and approach with no price; up to five (normally) shortlisted for phase two price and technical proposals | Phase one narrative and past performance |
The federal FAR is being rewritten under the FAR Overhaul; section numbers here are from the current text on acquisition.gov and should be checked for each solicitation.
What a construction RFP usually contains
| Section | What to pull out |
|---|---|
| Instructions to proposers | Due date and time zone, format, page limits, questions deadline, submission method |
| Scope of work | Inclusions, exclusions, alternates, phasing |
| Drawings and specifications | Quantities and requirements to price |
| Evaluation criteria | Factors, weights, and whether non-price factors outweigh price |
| Forms and contract terms | Bonds, insurance, payment terms, required forms, certifications |
| Addenda | Every change after issue, acknowledged |
Response workflow
- Qualify: score fit, capacity and risk before spending estimator hours (see the bid/no-bid guide).
- Extract requirements: build a compliance matrix from the instructions, scope and evaluation sections.
- Clarify: log questions before the deadline; track answers and addenda.
- Take off and price: quantities from the documents into your pricing workbook, entered exactly as the pricing form requires.
- Assemble: narrative, schedule, qualifications, price and forms.
The compliance matrix
A compliance matrix lists every "shall" in the instructions and scope, where it is answered in your response, and who owns it. Evaluators often score against a checklist; make each answer easy to find with the RFP's own numbering and headings. Page limits, font rules and file formats are compliance items too; some owners reject or ignore pages beyond the limit.
How construction RFPs are scored
Under a tradeoff process, the solicitation must state all evaluation factors and their relative importance, and whether non-price factors combined are more important than, equal to, or less important than price (FAR 15.101-1). Typical factors: relevant experience, key personnel, technical approach, schedule, safety record, past performance and sometimes small business participation. Spend effort in proportion to the points.
An RFP weights technical approach 30, past performance 25, key personnel 15 and price 30 (points). Price points are prorated: lowest price gets 30, others get 30 x (lowest / theirs).
Firm A wins at a 6.7% higher price. The scoring formula is an example; read the one in your RFP, and price your proposal knowing how it converts.
Before you submit
- Compliance matrix complete; every requirement answered and findable.
- All required forms completed and signed; addenda acknowledged.
- Pricing entered exactly as the form requires; assumptions stated only where allowed.
- Projects, references and resumes match the requested format and recency window.
- Bid bond or guarantee in the form required.
- Portal account set up, file size limits checked and a test upload done before the deadline.
When the RFP leads to an interview
Many construction RFPs shortlist a few firms for an interview. Bring the people who will run the project, not only business development staff, and rehearse with a clock. Owners want to see that the team understands the project's constraints and risks. Prepare a short plan for the first ninety days, examples of similar problems solved, and clear answers on schedule and cost control. Re-read your own proposal first; contradictions between the written response and the interview undermine confidence.
Where RenderDraw fits
RenderDraw's AI takeoff proposes quantities with sources from RFP drawings for estimator review, which frees time for the narrative and compliance work an RFP demands. Try a free sample takeoff.