{"id":577,"date":"2026-09-28T06:52:41","date_gmt":"2026-09-28T06:52:41","guid":{"rendered":"https:\/\/www.scantobimservices.com\/blog\/?p=577"},"modified":"2026-09-28T07:06:48","modified_gmt":"2026-09-28T07:06:48","slug":"how-frequently-should-you-re-scan-an-existing-building","status":"publish","type":"post","link":"https:\/\/www.scantobimservices.com\/blog\/how-frequently-should-you-re-scan-an-existing-building\/","title":{"rendered":"How Frequently Should You Re-Scan an Existing Building?"},"content":{"rendered":"

An existing building is never truly static.<\/span><\/p>\n

Spaces are renovated, walls are relocated, mechanical systems are replaced, equipment is added and building layouts gradually diverge from the original drawings. Over time, even a well-maintained BIM model can stop representing the physical asset accurately.<\/span><\/p>\n

This raises an important question for facility owners, architects, contractors and BIM teams: <\/span>how often should an existing building be re-scanned?<\/b><\/p>\n

There is no universal annual or five-year rule. The right frequency depends on how quickly the building changes, how critical accurate spatial information is and how the scan data will be used. The better approach is to establish <\/span>event-driven scanning supported by periodic verification<\/b>.<\/span><\/p>\n

\u00a0<\/b><\/p>\n

Why Existing Buildings Need to Be Re-Scanned?<\/b><\/span><\/p>\n

Laser scanning records millions of spatial data that can be processed into point clouds, drawings, meshes and BIM models. NIST research notes that the laser scanning can capture dense 3D measurements of a facility’s as-built condition and that these datasets can support the creation of as-built BIMs.<\/span><\/p>\n

The challenge is that the physical building continues to evolve after the initial survey.<\/span><\/p>\n

For example, consider a commercial building scanned in <\/span>2023<\/b>. By <\/span>2026,<\/b> it may have undergone:<\/span><\/p>\n