The Hidden Power of Submittals: Why They’re the Backbone of Every Smart Build

Published Dec 26, 2025. By Audree Grubesic. By Sneha Kumari. Read time: 3 min.

What a submittal is

A submittal is a document, sample, or data package sent for review before materials are ordered or installed. It is a final check against the project’s design intent and specifications.

Common submittal contents

• Shop drawings
• Product data sheets and cut sheets
• Material samples such as tile, flooring, paint, and finishes
• Mock-ups
• Equipment details
• Certifications and test reports

Why submittals matter

• They support quality assurance and compliance.
• They prevent rework by catching errors before materials reach the jobsite.
• They create clear communication across contractors, subcontractors, designers, manufacturers, and owners.
• They protect schedules and budgets by locking in decisions before fabrication.

Common types of submittals

Shop drawings

Contractor-generated drawings that show how components will be fabricated or installed.

Product data and cut sheets

Manufacturer specifications, performance data, installation methods, and material information. They help confirm compatibility and compliance.

Samples and mock-ups

Physical samples or small-scale mock-ups used to confirm color, finish, durability, and appearance.

Certificates and test reports

Documentation that proves compliance with safety, building codes, and performance standards.

How the submittal workflow works

1. The contractor prepares the submittal package.
2. The package is submitted to the design or review team.
3. The team approves it, requests revisions, or rejects it.
4. After approval, procurement, fabrication, or installation begins.

Why submittals matter in modular and offsite construction

• Factory fabrication leaves no room for guesswork.
• Components must be exact, down to the inch.
• Sequence and logistics depend on accurate specifications.
• On-site fixes are costly or impossible.

Submittals help ensure the right materials, dimensions, and specifications reach the factory the first time.

FAQ

Who prepares submittals?

Typically the contractor or subcontractor prepares submittals. Manufacturers, suppliers, or modular factories may contribute product details.

How long does review usually take?

Review windows are often 5 to 10 business days, depending on project complexity.

What happens if a submittal is rejected?

The contractor revises and resubmits it. Rejections often point to missing data, incorrect materials, or misalignment with specifications.

Do modular projects require more submittals?

They often require more detailed and precise submittals because fabrication happens offsite and errors are harder to correct once modules are built.

Can software streamline the process?

Yes. Construction-management platforms can automate tracking, approvals, notifications, and documentation.