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fig. 01 · glossary / request for information

What is a request for information (RFI) in construction?

A request for information, or RFI, is a formal question raised during construction to resolve a gap, conflict, or ambiguity in the contract documents, logged and answered on the record. A contractor or subcontractor raises it against the drawing and clause it relates to, and the design team answers in writing, dated.

For the asset owner, the RFI matters twice: once while it holds up the work, and again years later, when the answer explains why the asset differs from the as-constructed drawings.

Also called: RFI · site query · technical query · Related term: submittal package

fig. 02 · in practice

The RFI workflow, step by step.

An RFI is a controlled exchange with a number, a route, and a clock on it. Work often waits on the answer, so the value of the process is in how quickly a question reaches the person who can settle it.

An RFI sent to the wrong discipline sits unanswered while the work waits, which is why routing matters as much as the answer.

See how change requests hold, forward, and close
RFI workflow6 steps
  • 01
    Identify

    Someone on site meets a gap: a detail that is missing, a drawing that conflicts with the specification, or a condition nobody drew.

  • 02
    Raise

    The question is written down with its references, the drawing number and revision, the specification clause, and a photo or a markup.

  • 03
    Log

    The RFI is numbered and registered, so it can be tracked, chased, and counted rather than lost in an inbox.

  • 04
    Route

    It goes to the party who can answer it, usually the architect, the engineer, or the owner's representative.

  • 05
    Respond

    The answer is issued and dated against the RFI, and the site can proceed from a written instruction.

  • 06
    Close out

    The RFI is closed, and where the answer changes the design it triggers a revision, a variation, or both.

The RFI log, and what goes on the form.

The RFI log is the register of every question raised on the project: one row each, numbered in sequence, showing what was asked, who owes the answer, and whether it is still open. Its columns are the fields the RFI form asks for, so a form that leaves one blank writes a row nobody can act on. The RFI register template carries most of those as columns in Excel and CSV, with dropdowns and example rows already filled in, and the full question and response filed against the row.

The drawing number and the revision carry the most weight. A question raised against revision C can be answered after revision D goes out, and unless both sit on the row, nobody can tell whether the answer still applies to the sheet in front of them.

What an RFI log records10 columns
  • 01
    RFI number

    The sequential reference the question is known by, quoted in the answer and in anything that follows from it.

  • 02
    Subject

    A short title for the question, so the log can be read down without opening every row.

  • 03
    Drawing and revision

    The drawing number and the revision the question was raised against, with the specification clause where one applies.

  • 04
    The question

    What is missing, unclear, or in conflict, written so someone who has not walked the site can answer it.

  • 05
    Raised by

    The contractor or subcontractor who asked, and the date the question went out.

  • 06
    Routed to

    The discipline or party who owes the answer, so an open RFI has a name against it.

  • 07
    Date response required

    The date the site needs the answer by, taken from the programme rather than guessed at.

  • 08
    The response

    The written answer, the party who gave it, and the date it was issued.

  • 09
    Status

    Open, answered, or closed, so the log shows at a glance what is still holding up work.

  • 10
    Impact and resulting revision

    Any cost or programme consequence, and the drawing revision the answer produced.

The answer has to reach the drawing.

Most RFI processes close at the answer. The question is marked resolved, the site proceeds, and the log records what was said. The drawing carries on showing the design that raised the question in the first place.

That gap is the one an owner pays for. Maintainers, auditors, and the designers of the next project all read the drawing rather than the RFI log, and by then the log may sit in a system the contractor decommissioned at handover. Every RFI that changes the design has to land as a revision on the affected sheet and carry through into the as-constructed set, so the record and the answer say the same thing.

RFISubmittal
Direction

A question from the contractor out to the design team.

A deliverable from the contractor in for the design team to review.

Purpose

Resolve an ambiguity or a conflict in the contract documents.

Show that what will be supplied or built meets the specification.

Content

The question, its references, and usually a photo or a markup.

Shop drawings, product data, samples, calculations, and manuals.

Outcome

A written answer, sometimes followed by a revision or a variation.

Accepted, accepted with comment, or returned for resubmission.

The two often concern the same item of work, with months between the RFI answer and the submittal package it shaped.

fig. 03 · how Lunr handles it

Raise the question on the drawing that raised it.

A reviewer marks up the sheet in Lunr’s browser viewer and turns the redline straight into an RFI or a change request, so the question, the markup, and the document all sit on one record. The change that answers it runs through workflow and comes back as a revision.

  • Mark up a drawing in the browser viewer and turn the redline straight into an RFI or a change request.
  • The question and the document that raised it stay together, so the answer is read beside the sheet it applies to.
  • RFIs, transmittals, and change requests run in project spaces, where contractors join as Collaborators who see only what you grant them.
  • Put a change request on hold while you wait on an answer, then release it, with both moves logged.
  • Forward a change request to the right reviewer or discipline without losing the thread.
  • When the change is approved, the revision is incremented and synchronised back to the drawing title block.
  • When the project ends, the record stays with the asset, so the RFI history and the drawings it changed stay together.

redline to rfi · project spaces · collaborators · holds and forwards · revision on approval · audit trail

See configurable workflows
fig. 05 · questions

Questions about RFIs.

01
What is an RFI in construction?
An RFI, or request for information, is a formal question raised during construction when the contract documents are unclear, incomplete, or in conflict. A contractor or subcontractor writes the question against the drawing and specification it relates to, submits it to the design team or the owner's representative, and receives a dated written answer. The RFI and its answer are numbered and logged, so the instruction the site worked from can be produced later.
02
What does RFI stand for in construction?
RFI stands for request for information. In construction it names a formal question raised while the works are underway, usually by the contractor or a subcontractor, and answered in writing by the design team or the owner's representative. The same three letters mean something different in procurement, where a request for information is a document sent to the market to learn what suppliers can offer before a request for proposal goes out. On a construction project, an RFI is a contract administration record rather than a tender document.
03
What is the difference between an RFI and a submittal?
An RFI travels out from the contractor as a question, asking the design team to clarify the contract documents. A submittal travels in from the contractor as a deliverable, asking the design team to review and accept shop drawings, product data, samples, or manuals against the specification. The RFI resolves an ambiguity, and the submittal demonstrates compliance. They often relate to the same item of work, with months between the RFI answer and the submittal it shaped.
04
Who raises an RFI, and who answers it?
The contractor or a subcontractor usually raises it, because they are the ones who meet the gap while building. It is answered by whoever holds responsibility for the design: the architect, the engineering discipline concerned, or the owner's representative on an owner-managed project. On a large project the routing matters as much as the answer, since an RFI sent to the wrong discipline sits unanswered while the work waits.
05
What is an RFI log, and what does it record?
An RFI log is the register of every RFI raised on a project, one row per question, numbered in sequence. Each row records the RFI number, a short subject, the drawing and revision the question was raised against, the question itself, who raised it and when, the party it was routed to, the date the answer is needed, the response and its date, the status, and any cost or programme consequence. Read down the status column and you can see which questions are still holding up work. Read the log at handover and you can see why the asset differs from the design that was released.
06
What should an RFI form contain?
An RFI form should carry the fields the log needs: a unique reference number, the project and the party raising it, the drawing number and revision being queried, the specification clause where one applies, the question written so someone who has not walked the site can answer it, the date raised, the date an answer is required, the response with the name and date of whoever gave it, the status, and a note of any cost or programme consequence. Any photo or markup that shows the condition belongs with the form rather than in a separate email, so the question and its evidence stay together.
07
Why do RFI outcomes have to reach the drawing record?
Because the people who operate the asset read the drawings, not the RFI log. If an answer changes a route, a clearance, or a specification and the change lives only in the RFI, the drawing keeps showing the superseded design. Years later a maintainer works from that drawing and finds the asset does not match. Every RFI that alters the design has to land as a revision on the affected drawing and carry through into the as-constructed set.
08
Is an RFI the same as a variation or change order?
No. An RFI asks a question, and a variation changes the scope, the price, or the programme. Many RFIs are answered with a clarification that costs nothing. Some reveal a genuine change, and the variation follows as a separate instrument with its own approval. Keeping the two distinct matters, because an RFI answered casually can commit a project to work nobody has priced.
fig. 06 · get started

Close the loop from question to revision.

Book a walkthrough and watch a redline become an RFI, run through review, and come back as a revision on the drawing that raised it.

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