What Are As-Built Services? A Complete Guide for AEC Professionals

The As-Built Documentation Challenge

In the Architecture, Engineering, and Construction (AEC) industry, one of the most persistent challenges is maintaining accurate documentation throughout the construction lifecycle. Original design drawings rarely match the final built condition due to field changes, value engineering, and unforeseen circumstances.

What Are As-Built Services?

As-built services involve creating highly accurate digital records of physical spaces using advanced 3D scanning technology. Unlike traditional measurement methods, 3D laser scanning captures millions of data points to create a complete "digital twin" of a structure.

Key Components of As-Built Services:

• 3D Laser Scanning: High-precision capture of existing conditions with sub-inch accuracy
• Point Cloud Processing: Converting raw scan data into usable 3D models
• CAD/BIM Integration: Delivering models compatible with Revit, AutoCAD, and other industry software
• Progress Documentation: Timestamped records throughout construction phases
• Final As-Built Deliverables: Complete documentation for facility handoff and future renovations

Benefits for AEC Professionals

For General Contractors

• Eliminate costly rework from measurement errors
• Resolve subcontractor disputes with objective data
• Verify milestone completion for payment draws
• Reduce project delays from coordination conflicts

For Architects & Engineers

• Accurate existing conditions for renovation projects
• Clash detection before fabrication begins
• Quality assurance that design intent was followed
• Reduced liability with comprehensive documentation

For Facility Owners

• Complete digital record for operations and maintenance
• Foundation for future renovations and expansions
• Improved space planning and asset management
• Reduced costs for facility management over building lifecycle

The As-Built Process

1. Site Visit & Planning: We assess the space and develop a scanning strategy
2. 3D Laser Scanning: Rapid, non-invasive capture of all visible surfaces
3. Data Processing: Registration and cleaning of point cloud data
4. Model Creation: Building CAD/BIM models to your specifications
5. Quality Control: Verification of accuracy and completeness
6. Delivery: Final deliverables in your preferred format

When Do You Need As-Built Services?

• Renovation or retrofit projects requiring existing conditions
• Construction progress tracking and milestone verification
• Final turnover documentation for facility owners
• Dispute resolution and forensic analysis
• MEP coordination and clash detection
• Facility management and operations planning

Technology & Accuracy

Modern 3D laser scanners achieve accuracy within 1-3mm, far exceeding traditional measurement methods. The resulting point clouds contain millions of data points, creating a comprehensive digital record that can be revisited indefinitely without returning to the site.

ROI of As-Built Documentation

While as-built services represent an upfront investment, the ROI is substantial:

• Reduced rework costs (studies show 5-10% of construction budgets go to rework)
• Faster project timelines through better coordination
• Lower insurance and liability costs
• Improved facility operations and maintenance efficiency
• Higher quality deliverables that justify premium pricing