Walk onto almost any active job site and you will find people waiting on paperwork. Someone needs an approved door hardware sheet before ordering. Someone else is waiting on a signed-off shop drawing before steel can be fabricated. That paperwork is the submittal process, and it quietly decides whether a project runs smoothly or stalls.
This guide breaks down what submittals are, the main types, who handles them, and how to keep the process from slowing your schedule.
What Is a Construction Submittal?
A submittal is any document, sample, or piece of product information that a contractor sends to the design team for review before materials or equipment are installed. The architect or engineer checks it against the project specifications and either approves it, asks for changes, or rejects it.
Think of it as a “show me before you build it” checkpoint. It confirms that what the contractor plans to install is exactly what the designer had in mind. If you want a clear, beginner-friendly definition, this article on what is a submittal in construction walks through the basics in plain language.
Why Submittals Matter
Fixing a mistake on paper costs almost nothing. Fixing it after the material is installed can cost thousands, plus lost time. Submittals catch problems early, such as the wrong finish, an undersized fixture, or equipment that doesn’t meet code.
The Main Types of Submittals
Different parts of a project call for different kinds of documentation. Most fall into four groups.
Product Data
These are manufacturer sheets that list a product’s specifications, performance ratings, dimensions, and model numbers. They are typically reviewed before anything is ordered.
Shop Drawings
Shop drawings show how a component will be fabricated and installed. They are more detailed than the main design drawings and are common for structural steel, ductwork, millwork, and custom metal items.
Samples
Physical samples, such as tile, stone, carpet, and paint chips, let the design team and owner judge color, texture, and quality in person, which no screen can fully capture.
Mockups
A mockup is a small built section of a wall, façade, or finish. It lets everyone see the actual look and workmanship before the full installation begins.
Who Is Responsible for Submittals?
Responsibility is shared, but the contractor usually carries the first step.
The Contractor or Subcontractor
Subcontractors prepare the package for their trade. The general contractor reviews it for completeness and consistency before forwarding it.
The Architect and Engineers
The design team checks each item against the plans and specs. On larger projects, consultants such as structural, mechanical, or electrical engineers may review their own portions.
The Owner or Construction Manager
For finishes and key selections, the owner or construction manager may also weigh in, which can add review time.
How Submittals Affect Your Schedule
Submittals are one of the most common hidden causes of delay. A long review queue or a rejected package can hold up procurement, and long-lead items such as sBlockedword/sentencegear, elevators, and custom windows make the problem worse.
Smart teams plan backward from the installation date. If an item takes twelve weeks to deliver and two weeks to review, the submittal must go out well before that date, with room for a resubmission.
Common Submittal Mistakes to Avoid
A few habits cause most of the trouble:
- Sending outdated or incorrect product data
- Submitting incomplete packages that get returned immediately
- Skipping an internal review before sending to the design team
- Ignoring the required review sequence
- Rushing and overlooking mismatches with the specifications
Each of these costs days, and days add up.
Practical Tips for a Smoother Process
You don’t need a complicated system to improve results. Start with these steps:
- Build a submittal log at the start of the project and update it weekly.
- Tie every submittal to a required-by date based on lead times.
- Assign one person to track each package from submission to approval.
- Check every package against the spec section before it goes out.
- Use a digital platform so reviewers can respond quickly and everything stays in one place.
How Good Documentation Supports Quality
Approved submittals also become part of the project record. If a disagreement comes up later about what was specified or installed, the approved package provides a clear answer. This protects contractors, designers, and owners alike, and it helps maintain consistent quality from start to finish.
Final Thoughts
Submittals can feel like tedious paperwork, but they work as one of the strongest quality controls on a building project. Handle them early, keep them organized, and review them carefully, and they will save you from expensive rework and avoidable delays. Teams that treat submittals as part of the schedule rather than an afterthought tend to finish with fewer surprises.