Construction Company Data Backup: Protecting the Files That Keep Your Projects Running

What Construction Data Is at Risk

Construction companies generate several categories of data that have different risk profiles and retention requirements:

• CAD and BIM files: These are typically the largest files and the hardest to recreate. A full set of construction drawings for a commercial project can be 10–100GB. BIM models for complex projects can exceed 1TB. Losing these requires expensive re-drafting or scanning work.
• Project documents: Submittals, RFIs, change orders, inspection reports, and daily reports. These are typically stored in Procore or Autodesk Build — but cloud platforms have retention policies that don't automatically preserve data forever.
• Contracts and subcontracts: Legal documents that may be needed years after project completion for warranty claims or litigation.
• Financial data: Job cost reports, certified payroll, AIA billing documentation. These often have tax and legal retention requirements of 7+ years.
• Photos and videos: Progress photos and inspection documentation. Increasingly used in disputes and insurance claims.

The Cloud Platform Misconception

Many construction firms believe that using Procore, Autodesk Build, or OneDrive means their data is "backed up." This is partially true — these platforms provide redundant cloud storage. But they don't protect against:

• Accidental deletion by a project team member (and many platforms have limited undo windows)
• Ransomware that syncs encrypted files to cloud storage before the attack is detected
• Platform-level incidents (cloud service outages, account compromises)
• Data retention after account cancellation or when a project is closed out in the system

Your backup strategy must be independent of your primary storage platform.

Backup Strategy for CAD and BIM Files

Large file backup has different requirements than standard document backup:

• Versioning is critical: CAD files go through many iterations. Simple backup that overwrites previous versions isn't sufficient — you need versioned backup that preserves prior states. Both OneDrive and SharePoint support versioning, but the default settings are often too limited (keeping only 10–30 versions).
• Incremental backup for large files: Daily full backup of 100GB+ file sets is impractical. Use backup software that performs block-level incremental backups, only transmitting changed portions of large files.
• Local + cloud backup: For active projects, local NAS (Network Attached Storage) backup provides fast access for large file restoration. Cloud backup provides disaster recovery if the office is inaccessible.
• Testing restoration of large files: Practice restoring a 500MB CAD file from backup before you need to do it under pressure. Large file restoration can take hours over cloud connections.

Mobile Device Backup for Field Teams

Field tablets and phones hold photos, measurements, and notes that may not sync to central systems before they're needed:

• Apple Business Manager or Android Enterprise MDM can enforce automatic photo backup to company storage
• Devices should be enrolled in MDM so data can be remotely wiped if lost, but first backed up to company storage
• Procore and Autodesk Build automatically sync photos to the cloud when connectivity is available — verify this sync is happening and not failing silently

Project Closeout and Long-Term Retention

When a project completes, data retention requirements extend well beyond the project:

• Warranty period: Construction defect claims can arise during the warranty period (typically 1 year, but up to 10 years for structural defects in some states). Project documentation must be accessible throughout.
• Statute of limitations: Construction litigation statutes of limitations vary by state (typically 3–10 years, or up to "substantial completion" triggering time). Retain all project documentation for at least 10 years, or consult your construction attorney for state-specific guidance.
• OSHA requirements: Safety incident records must be retained for 5 years. Injury and illness logs must be retained for 5 years following the year to which they relate.

Establish a project closeout process that includes archiving all project data to a dedicated storage location with a defined retention period — separate from active project storage.

What to Test Annually

Backup systems that aren't tested fail when needed. Annual testing should include:

• Full restoration of a completed project's files from backup
• Restoration of a large CAD file set from cloud backup (verify timing)
• Restoration of email and financial data from backup
• Verification that mobile device backups are complete and current

Frequently Asked Questions

How long should construction companies retain project documents?

At minimum, retain all project documents for 10 years after substantial completion — longer for jurisdictions with extended construction defect statutes of limitations. Financial records should be retained for 7 years per IRS requirements. When in doubt, retain longer rather than shorter; storage is cheap, legal exposure is not.

Does Procore back up my data?

Procore maintains infrastructure redundancy and data backups for their platform. However, accidental deletion of items in Procore can be permanent after a limited recovery window, and Procore's backup infrastructure doesn't protect your business from ransomware that uses your Procore account credentials to modify or delete data. Maintain an independent backup of critical project data.

What's the best way to back up large BIM model files?

Autodesk BIM 360/Construction Cloud handles versioning natively for models uploaded to the platform — previous versions are preserved. For locally stored Revit files, backup software with block-level incremental capability (Veeam, Acronis) combined with a local NAS provides fast backup and restoration for large files.