Project delivery

What is an RFI log in construction?

An RFI log is the single running list of every request for information on a project: who asked, what was asked, who owes the answer, when it is due, what came back, and whether it changed cost or time.

A superintendent holds a drawing while a foreman points to a framed opening inside a building under construction.
Connect the clarified drawing to the exact location and crew that need it. AI-generated illustration.

Every request for information is a question about the drawings or specs that the field cannot answer alone. The RFI log is where all of those questions live together. One row per RFI, numbered in order, with status and dates. On a mid-size commercial job it can run to hundreds of rows, and it is one of the first documents a lawyer asks for if the job ends in a dispute.

The log does two jobs. Day to day, it tells the PM what is overdue and who is holding things up. After the fact, it is the record that shows when the contractor asked, how long the design team took, and what the answer cost.

What an RFI log tracks

Typical RFI log columns
ColumnWhy it matters
RFI numberSequential, never reused. Gaps raise questions later.
Subject and spec or drawing referenceLets anyone find related RFIs fast.
Originator (sub or GC)Shows which trade raised it and who needs the answer.
Date sent and date requiredThe required date should tie to a real schedule need.
Ball in courtArchitect, engineer, owner, or GC. The single most useful column.
Date answered and answer summaryResponse time is evidence in a delay claim.
Cost impact / schedule impact (yes or no)Flags RFIs that should become a change request.
Linked change or bulletin numberTies the question to the money.

How the log works on a real job

Say a mechanical sub on a $6 million clinic finds that a duct main conflicts with a beam on level 2. The sub sends the question to the GC, which logs it as RFI 112, adds a sketch, and forwards it to the architect with a required date eight working days out, because ductwork on that floor starts in three weeks.

The architect answers on day 14 with a reroute that adds two fittings and a fire damper. The PM marks cost impact "yes," opens a request for change, and notes the six days the answer was late. In the weekly meeting, the log shows 9 RFIs open past their required date, 6 of them with the structural engineer. That number, not a feeling, is what gets the engineer on a call.

Common mistakes

  1. Keeping separate logs in email, the sub's spreadsheet, and the GC's software. There should be one source of truth.
  2. Setting every required date to "ASAP." If everything is urgent, the design team cannot prioritize and the dates carry no weight in a claim.
  3. Closing RFIs when an answer arrives even if it is incomplete or creates new questions.
  4. Missing cost impacts. An RFI answer that adds work without a change request is free work.
  5. Not distributing answers to the field. The log says answered, but the foreman is still building from the old detail.

Related terms

The RFI log usually sits beside the submittal log and the drawing log as part of document control. For process, see how to manage RFIs without slowing the job. Smart Business Automator keeps RFIs, due dates, and answers in one log per job and can draft RFI text from a field note; see RFI and submittal tracking automation.

Frequently asked questions

Who maintains the RFI log?

Usually the general contractor's project engineer or project manager. Subs often keep their own copy, but the GC's log is normally the official record.

How is an RFI log used in a delay claim?

It shows when each question was asked, when the answer was needed, and when it arrived. Late answers on work that was on the critical path are a common basis for time extensions.

Should every RFI get a number even if it is withdrawn?

Yes. Mark it withdrawn or void rather than deleting it, so the numbering has no gaps and nobody wonders what happened to a missing RFI.

What is ball in court on an RFI log?

It names the party that currently owes the next action, such as the architect or a consultant. It is the fastest way to see who is holding up answers.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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