An as-built survey is the precise measurement and documentation of a building, structure, or site’s current, physical state after construction or modification. Unlike design drawings or plans, which represent intended or proposed structures, an as-built survey reflects the actual conditions "as constructed," including any deviations, modifications, or updates made during construction.

This survey captures detailed dimensions, locations, and spatial relationships of architectural, structural, mechanical, electrical, and plumbing elements, providing a reliable and accurate base for renovation, remodeling, expansions, or legal documentation.

At Data Capture Service, we specialize in delivering cutting-edge as-built surveys utilizing advanced 3D laser scanning technology to ensure every project reflects reality with millimeter accuracy.

Importance of As-Built Surveys in Construction and Facility Management

• Verify Construction Compliance: Ensures that the constructed project matches the approved architectural and engineering designs.
• Identify Discrepancies: Detects changes or deviations made during construction, avoiding costly rework.
• Facilitate Renovations & Expansions: Provides a trustworthy baseline for designing upgrades or additions.
• Aid Facility Management: Offers detailed documentation for ongoing maintenance, asset tracking, and space management.
• Legal and Regulatory Requirements: Acts as an official record for building permits, zoning, and audits.
• Improve Project Coordination: Helps contractors and engineers communicate effectively with up-to-date data.

How Does Data Capture Service Perform As-Built Surveys?

Advanced 3D Laser Scanning Technology

We utilize state-of-the-art 3D laser scanners equipped with LiDAR (Light Detection and Ranging) sensors to capture detailed, non-contact measurements of your site. This technology rapidly collects millions of precise points—called a point cloud—that represent every surface in three dimensions.

Our fleet includes top-tier models like the Leica RTC360 and P-Series ScanStations, known for their accuracy (within 2-4 mm), speed, and versatility in architectural, industrial, and construction environments.

Step-by-Step Survey Workflow

1. Project Scoping and Goal Setting:
   Prior to mobilization, our Project Managers collaborate closely with clients to understand the purpose of the survey and desired deliverables. This planning phase determines scan resolution, areas of focus, and output formats such as 2D CAD drawings, Revit BIM models, or interactive 3D walkthroughs.
2. Site Preparation and Setup:
   Upon arrival, our skilled technicians position laser scanners at multiple vantage points strategically to cover the entire site or structure. Scanning locations are selected to maximize line-of-sight and minimize occlusions.
3. Data Acquisition Using Laser Scanners:
   Each scanner emits rapid laser pulses that reflect off surfaces and return to the sensor. By measuring the time delay for each pulse, the scanner calculates precise distances, capturing millions of spatial coordinates per second.
4. Simultaneous High-Definition Photography:
   Our scanners are integrated with panoramic HD cameras, capturing detailed images concurrently with laser data to enhance visualization and contextual referencing.
5. Real-Time Field Review and Annotation:
   Using tablets or mobile devices, our Project Managers immediately review captured scans, add annotations, voice memos, or field photos to document observations or special conditions directly on the point cloud data, ensuring accuracy and completeness before leaving the site.
6. Data Processing and Modeling:
   Back at our engineering center, experienced technicians register, align, and clean the point cloud data. Using advanced software, they create precise 2D and 3D deliverables tailored to your needs—including CAD drawings, BIM models, or digital twins.
7. Quality Assurance and Delivery:
   Final outputs undergo rigorous quality checks to ensure dimensional accuracy and completeness. Deliverables are shared in client-preferred formats with clear documentation.

How Does 3D Laser Scanning Enhance As-Built Surveys?

• Millimeter Precision: Captures data with extraordinary accuracy, far surpassing manual measurement methods.
• Comprehensive Coverage: Millions of points create a detailed, seamless 3D representation of your site.
• Speed and Efficiency: Scans large or complex environments quickly, reducing onsite time and costs.
• Non-Destructive and Safe: Laser scanning is non-contact and safe for delicate structures and occupied sites.
• Versatile Deliverables: Point clouds convert to 2D drawings, 3D BIM models, virtual tours, or even AR/VR applications.
• Documentation of Hard-to-Reach Areas: Easily captures areas that are unsafe or inaccessible for manual measurement.

Typical Applications of As-Built Surveys

• Building Renovations and Retrofit Projects: Accurately map existing conditions to support design and construction.
• Historic Building Preservation: Create detailed digital archives of heritage structures.
• Construction Verification and Quality Control: Confirm that ongoing work aligns with design specifications.
• Facility Operations and Space Management: Maintain accurate floor plans and asset data for maintenance.
• Infrastructure and Utility Mapping: Document underground utilities or complex mechanical systems.
• Prefabrication and Modular Construction: Use precise measurements to fabricate components offsite.
• Legal Documentation: Provide evidence for compliance, disputes, or insurance purposes.

Why Choose Data Capture Service for Your As-Built Survey?

• 27+ Years of Expertise: Over two decades of industry leadership with 10,000+ buildings surveyed.
• Highly Skilled Team: Our Project Managers and technicians receive manufacturer training and extensive field experience.
• State-of-the-Art Equipment: We deploy top laser scanning hardware for unmatched accuracy and speed.
• Customized Deliverables: From simple 2D drawings to fully detailed BIM models and digital twins.
• Efficient Workflow: Onsite data review and fast turnaround to meet project deadlines.
• Trusted by Industry Professionals: Architects, engineers, contractors, and facility managers nationwide rely on our precision.
• Comprehensive Support: From initial consultation through project completion.

Case Study Examples

• Historic Residence Hall Survey: For a 100-year-old university building, we performed a high-resolution as-built survey to produce an accurate 3D model for restoration and renovation, ensuring preservation of architectural detail.
• Hospital Façade Survey: Delivered a precise 2D CAD drawing of the façade to a roofing contractor, enabling prefabrication of soffits and fascia without on-site measurement, saving time and reducing costs.

Technology Behind As-Built Survey at Data Capture Service

Our laser scanners combine ultra-fast rotating lasers and panoramic HD cameras. For example:

• Leica RTC360: Capable of scanning up to 2 million points per second with 2-4 mm accuracy. It performs a full 360-degree rotation and automatically integrates images and point clouds from multiple scan stations via its visual inertial system.
• Leica P-Series ScanStations: Offer superior range, dual-axis compensation to mitigate tilt, and the ability to tie scans into established survey control points for geospatial accuracy.

The combination of point clouds and high-definition imagery results in precise, visually rich models that can be used for multiple downstream applications.

Contact Data Capture Service for Expert As-Built Survey Solutions

When your project demands absolute accuracy and detailed documentation of existing conditions, trust Data Capture Service to deliver. Our combination of advanced technology, skilled professionals, and customized workflows ensures your as-built survey is fast, reliable, and precise.

Get in touch with us today for a free consultation and project estimate. Let us help you build on a foundation of precise reality.