As-Built Documentation Checklist Generator

A comprehensive as-built documentation checklist should include pre-project planning items (scope definition, access coordination, control point placement), field documentation requirements (3D laser scanning positions, photography, MEP verification), deliverable specifications (point cloud formats, 2D floor plans, BIM-ready data), and QA/compliance checks (accuracy verification, registration quality reports, final delivery audit). The specific items vary based on building type, project purpose, and required accuracy level.

The most common requirements include accurate floor plans showing walls, doors, and windows; MEP (mechanical, electrical, plumbing) documentation for renovation planning; structural element locations for engineering analysis; ceiling heights and clearances for code compliance; and exterior facade measurements for building envelope studies. Healthcare and data center facilities have additional requirements for equipment clearances and utility routing.

Accuracy requirements depend on the project purpose. General reference documentation (facility management, space planning) typically requires ±1" (25mm) accuracy. Standard construction documentation for renovations and permit work requires ±1/4" (6mm). High-precision projects like mechanical installations and fit-outs need ±1/8" (3mm). Survey-grade documentation for engineering and legal purposes requires millimeter-level accuracy, achievable with instruments like the Trimble X12 (3D point accuracy 2.2 mm @ 20 m).

Timeline depends on building size, complexity, and deliverable requirements. A small commercial space (under 5,000 sqft) with 2D floor plans typically takes 1-2 days for field work and 3-5 business days for processing. Mid-size buildings (25,000-100,000 sqft) require 2-5 field days and 1-2 weeks for deliverables. Large or complex facilities (100,000+ sqft) with full MEP documentation and BIM-ready data may require 1-3 weeks of field work and 3-4 weeks for complete documentation.

As-built drawings are a specific deliverable — typically 2D CAD floor plans showing the building as it actually exists (versus original construction drawings). As-built documentation is a broader term encompassing all records of existing conditions: 3D point cloud data, floor plans, MEP documentation, photographic records, measurement reports, and BIM-ready scan data. A complete as-built documentation package includes drawings plus the raw scan data and supporting materials.