Developers and main contractors often rely on progress photographs to record pipework, cabling and other site conditions. Photos can confirm completed work and visible defects. However, months later, when designers, MEP subcontractors or facilities teams need to confirm a pipe route, valve position or equipment clearance, isolated photographs may not provide enough spatial information.
The problem is not that records do not exist, but that they may not support later checks or measurements.
A practical approach is to capture the site in 3D before important work changes, becomes concealed or can no longer be inspected directly. Rather than scanning the entire site every day, teams can capture key milestones and build a usable 3D construction record.
Before Construction: Establish a Reliable Existing-Condition Baseline
On refurbishment and fit-out projects in the UK, existing drawings do not always match actual site conditions. Buildings may have been altered several times without every change appearing in the records.
Before work begins, one operator can use the SHARE SLAM S20 to scan connected spaces and capture walls, openings, stairs, equipment, services and other existing conditions.
Compared with photographing every room, taking many manual measurements or repeatedly setting up static equipment, handheld scanning can provide a faster way to establish a more complete baseline.
If demolition, opening changes, service diversions or design revisions occur later, teams can return to the pre-construction dataset to confirm the original condition. The data can also support design development, construction planning and CAD or BIM workflows.
At this stage, the key question is simple: what did the site actually look like before work began?
First-Fix MEP is One of the Most Valuable Stages for Milestone Scanning: Record Installations Before They Are Concealed
At this point, pipework, ductwork, cable trays, supports and service penetrations are still visible. Once walls, ceilings and finishes are installed, much of this becomes concealed.
The S20 combines LiDAR with SHARE3DCAM’s SLAM algorithm to support continuous positioning and trajectory tracking as the operator moves through rooms, corridors and staircases. Two 1-inch, 16MP cameras add colour to the point cloud, making services and building elements easier to identify.
This is particularly useful in MEP-dense environments such as hospitals, hotels, offices, commercial fit-outs and plant rooms.
If maintenance, design changes or installation conflicts arise later, teams can return to the dataset to review service routes, equipment connections and surrounding space rather than relying only on photographs.
The key question is: have we captured enough information before these services disappear from view?
Before Trade Handover: Give Teams a Shared Site Reference
Trade handover is not only about whether records exist, but whether everyone is referring to the same site condition.
The work completed by one trade directly affects the next trade’s ability to proceed. Traditional handovers rely on inspections, photographs and written records. When issues arise around openings, clearances, interfaces or access, different teams may be working from information captured at different times and viewpoints.
A scan taken before handover preserves the actual condition at the point of transfer.
Main contractors, designers and specialist subcontractors can review the same 3D dataset to check whether an area is ready, whether services obstruct planned work, whether access routes remain clear and whether unresolved issues remain.
It does not replace formal inspection or handover procedures, but it can reduce repeated checks and disputes caused by inconsistent site information.
At Practical Completion: Carry Site Data into Handover and Operation
At practical completion, scanning shifts from construction-stage documentation to project handover and future use.
Final scan data can support as-built records, CAD, BIM, O&M documentation, maintenance and refurbishment. If earlier milestone scans have also been completed, teams can compare datasets and review how the building changed from existing condition to completion.
The S20 captures up to 200,000 points per second, with a range of 0.1–40 metres at 10% reflectivity and specified relative accuracy of ?1 cm, making it suitable for many building documentation and construction verification tasks.
Using SHARE PointClouds Studio, users can process point-cloud data locally, crop datasets, take measurements, create CAD sketches and export formats including DWG and DXF.
For developers or remote teams, scan data can also be processed into a 3DGS model, allowing users to revisit the captured space from different viewpoints rather than relying only on fixed photographs or video.
At this stage, the value is not simply preserving a final point cloud, but carrying site information into handover, operation and future alteration.
Why Milestone Scanning Needs a Repeatable Workflow
A project may require several scans over weeks or months, so long-term usability depends on more than single-scan performance. Ease of operation, rapid checking and predictable processing costs also matter.
SHARE3DCAM users enjoy permanent, free access to SHARE PointClouds Studio when processing data locally on their computers.
For projects planning four or five milestone captures, predictable software costs make it easier to include reality capture within the construction programme rather than reserving scanning for exceptional tasks.
Local processing also reduces reliance on network uploads and cloud platforms, which is useful where files are large, site connectivity is limited or project data has specific management requirements.
What the S20 Does Not Replace
The SHARE SLAM S20 is better suited to existing-condition capture, concealed-work records, construction verification, trade coordination, CAD and BIM reference, and handover preparation.
Millimetre-level deformation monitoring and tightly controlled high-precision survey work may still require a total station or specialist survey team.
The S20 is better understood as an everyday reality-capture tool that allows developers, main contractors and project teams to record important site conditions quickly and repeatedly.
From Site Preparation to Handover
Pre-construction data establishes an existing-condition baseline. First-fix scans preserve MEP installations before concealment. Trade handover scans provide a shared site reference, while practical-completion data supports delivery and future operation.
This approach can help reduce repeat site visits, invasive checks after concealment, communication gaps caused by inconsistent photographs, and last-minute remeasurement.
The value of a 3D LiDAR scanner is therefore not limited to a single survey. It lies in connecting key construction milestones and keeping site information useful from project preparation through to handover.
