What Is an As-Built (and Why You Should Consider Validating the One You Have)

An as-built typically consists of a set of documents that reflects the actual dimensions and layout of a structure as it was constructed. An as-built drawing should show any changes made during the construction process that differ from the original design plans. As-builts are essential for renovations, facilities management, and future planning. However, most as-built drawings are either outdated, inaccurate, or simply unavailable — especially in older or heavily modified buildings.

Why are as-built drawings often unreliable?

We often encounter clients who have “as-builts” in hand — only to find out they can’t be trusted. Here’s why:

  • They were never properly updated. Construction teams may not have documented all field changes.
  • They were created manually. Hand measurements introduce human error.
  • They’ve gone missing. Drawings are frequently lost over time or were never created in the first place.

These discrepancies can lead to design errors, unexpected demolition, budget overruns, and major delays during renovation or retrofit projects.

How does SDMM solve this problem?

We use reality capture to produce as-built documentation you can rely on. Our approach includes:

  • 3D Laser Scanning. We capture millions of data points to create a high-resolution digital record of your space.
  • Point Cloud Models. This raw scan data is cleaned, organized, and delivered in various formats depending on your project needs.
  • Scan-to-CAD/BIM. We generate as-built drawings and Building Information Models that reflect the situational picture of the site, including mechanical, electrical, and plumbing systems if needed.

The result? Highly accurate as-built records that eliminate guesswork and help teams move forward with confidence. At SDMM, we like to refer to these as Existing Condition Drawings.

When should I request new as-builts?

If your building is:

  • Being renovated or repurposed
  • Experiencing operational or structural issues
  • Lacking any reliable documentation

…it’s a good time to bring in SDMM for a laser scan and updated as-built package. We provide tailored deliverables that match the requirements of architects, engineers, facility managers, and contractors.

Real Project Example: Industrial Facility Retrofit

A Nova Scotia manufacturing plant needed to retrofit their facility, but their only as-builts were decades old and didn’t reflect numerous additions. SDMM completed a full laser scan and delivered updated digital as-builts, revealing critical misalignments in walls, pipe runs, and equipment. The accurate data allowed the engineering team to redesign with certainty, preventing costly changes mid-construction.

What do I get when SDMM provides as-built documentation?

We customize deliverables to your project. This may include:

We’ll help you determine which format works best for your project scope, budget, and timeline.

If you’re planning a renovation or need to validate existing site conditions, SDMM can provide the clarity you need. Reach out to us to learn how our as-built services can reduce your risk and improve project outcomes.