A millwork drawing is not ready for fabrication by virtue of being drawn up. It must be reviewed for sizes, materials, construction, coordination and revisions before fabrication can start. A clear shop drawing approval process will aid the team in identifying problems, managing shop drawing redlines, tracking changes and verifying which drawings are approved for fabrication.

This guide explains the key stages of shop drawing review, from initial submission and comments to revisions, resubmittals and final approval. It also covers common approval challenges and how millwork shop drawing services can provide additional drafting support when projects involve complex or changing drawing packages.

What Is the Shop Drawing Approval Process, and Why Does It Matter More Than the Drawing Itself?

The shop drawing approval process refers to a particular set of steps which are taken to review and approve drawings prior to fabrication. Usually initiated by a submission of completed drawings to project stakeholders, who review information such as dimensions, materials, finishes, construction details and coordination, and return comments or shop drawing redlines if revisions are needed.

The drafter then updates the drawings, incorporates the required revisions and resubmits them for approval until the required status is achieved and correct drawing issue is released for fabrication.

A good shop drawing is only useful to everyone if they know what version is approved. A well managed shop drawing review process will prevent miscommunication, outdated information, rework, production delays and disputes during fabrication. 

The Shop Drawing Approval Process, Step by Step

The shop drawing approval process can go through various phases right from the preparation and submission of drawings for review, commenting on the drawings, revision, and finally approval and release of drawings for manufacturing. The whole process might slightly differ from one project to another; however, the below-mentioned phases would give you an idea about millwork submittal process. 

Step 1: Prepare the Shop Drawings

The drafter develops drawings using the latest architectural drawings, specifications, dimensions and project information. Plans, elevations, sections, materials, finishes, hardware and construction details are included as required.

Step 2: Submit the Drawing Package

The completed millwork shop drawings are submitted to relevant stakeholders, including the architect, general contractor or owner’s representative. The submission should be accompanied by the information required for the approval process. 

Step 3: Review Drawings

The reviewers shall check the dimensions, materials, finishes, construction methods and details, hardware, installation, and the overall arrangement and coordination with other items of work. The reviewers can approve documents or return them for clarification or modification. 

Step 4: Add Redlines and Comments

If revisions are necessary, reviewers annotate the drawings with comments or shop drawing redlines indicating incorrect dimensions, material changes, coordination problems or missing details that have to be corrected. 

Step 5: Make the Revisions

The drafter reviews each comment and revises the corresponding drawings. Related plans, elevations, sections, details or schedules should also be reviewed so that a change in one does not contradict the others. 

Step 6: Resubmit for Review

Revised drawings are issued through the resubmittal process with appropriate revision information. The updated package should clearly show which comments have been addressed and what has changed.

Step 7: Receive Approval

The reviewers assess revised drawings again and provide applicable approval status. If further changes are required, another revision and resubmittal may be necessary.

Step 8: Release for Fabrication

Once the required approval has been received, approved drawing issues can be released for fabrication according to the project’s procedures. The fabrication team should work from the current approved information rather than an earlier revision.

Understanding Approval Status: What the Stamps Actually Mean

However, the millwork submittals will get back to you with any one of the approved statuses, and it is always wise to know what they entail. 

  • Approved: The reviewer has accepted drawing without any changes. The fabrication team can proceed using drawing as submitted. 
  • Approved as Noted: The reviewer has accepted the drawing with specific comments or instructions. The fabrication team can proceed only by following those noted changes as required by the project procedure. 
  • Revise and Resubmit: The drawing is not approved for production. Changes are needed and the revised drawing needs to be resubmitted for review before fabrication can proceed.
  • Rejected: The drawing is not approved and requires more substantial changes before it can be resubmitted. Fabrication should not proceed on rejected information.

Can Fabrication Begin While Only Part of a Package Is Approved?

Yes, but only when the project procedure allows a specific approved portion to be released for fabrication. Having some drawings completed or reviewed does not automatically mean that work can begin.

For example, if we have a millwork package that includes a reception desk, wall paneling and storage cabinets, and only the reception desk has been approved for fabrication release, then we are allowed to start on desk while the rest go through the drawing reviews.

Before starting, team should confirm:

  • Which designs or items are approved
  • The approved revision number
  • Whether fabrication release has been given
  • Whether related details, materials and dimensions are also confirmed
  • Whether any outstanding comments could affect production

The key is to fabricate only from clearly approved and released information, not simply from drawings that have been completed or submitted.

What Should Be Checked Before Fabrication?

A final verification must be performed prior to taking a millwork package from the stage of approval to production to ensure that fabricator is operating on correct information. 

  • Drawing revision: Confirm that the latest approved revision is being utilised.
  • Review comments: See that all required comments and redlines have been responded to.
  • RFIs: Ensure that RFIs that affect fabrication have been resolved.
  • Materials and finishes: Confirm that the materials, finishes, and hardware called out in the drawings are final.
  • Dimensions and coordination: Verify that dimensions and related project information are current.
  • Approval: Confirm that the required approval and fabrication release has been issued.
  • Related information: Check that plans, elevations, details, schedules, and cut lists are consistent.

How Should Approval Status Be Tracked?

Major projects have hundreds of drawings that are reviewed several times by different people. This is why it is quite hard to keep track of what drawings are up to date.

A simple submittal or drawing register can track:

  • Drawing number
  • Drawing title
  • Current revision
  • Submission date
  • Reviewer
  • Review status
  • Comments received
  • Resubmission date
  • Final approval
  • Fabrication release

Autodesk also suggests maintaining a submittal log to indicate documents, responsible people, reviewers, dates, and approval status. 

The purpose is not to create more administration. The purpose is to make status of all drawings visible.

Common Mistakes That Slow Down the Approval Cycle

Small gaps in the shop drawing approval process can cause extra rounds of reviews and production delays as well as confusion regarding what information is up-to-date. The following errors are common, but most can be avoided with proper documentation and a consistent review process.

MistakeConsequenceHow to Avoid It
Submitting an incomplete packageReviewer gives partial or premature feedbackSubmit complete packages ready for full review
Vague redlinesAmbiguity causes repeated revision roundsRequire specific, detailed markup comments
No written record of approvalDisputes over what was actually approvedDocument every approval status formally
Fabricating from unapproved itemsRisk of producing parts that no longer match designTrack and release fabrication item by item
No single log of revisionsTeams work from outdated drawingsMaintain a shared submittal log with current status

How Shalin Designs Supports Millwork Drawing Review and Revisions

Managing repeated comments, redlines and revisions can put pressure on project teams. Shalin Designs works alongside your existing team to provide additional drafting capacity when millwork packages require ongoing updates and coordination.

With shop drawing services, the team can update drawings, incorporate review comments, maintain revision information and support drawing coordination. Your team retains control over design decisions, approvals and fabrication release while keeping millwork submittals organised throughout review and resubmission.

Final Takeaway

A millwork shop drawing should not be considered complete just because the first issue has been drawn. The work really begins during the review process. A controlled shop drawing approval process provides a formal methodology for identifying issues, marking up drawings, managing revision cycles, resubmitting revised information and recording final approvals.

For organisations managing multiple millwork packages or facing aggressive fabrication schedules, this disciplined approach ensures a smooth production handoff and avoids last- minute chaos over outdated drawings.

If your team needs additional support with millwork shop drawings, revisions or drawing coordination, Shalin Designs can work alongside your existing workflow. Contact the team to discuss your project requirements and drafting needs.