Preconstruction condition survey of neighbouring buildings

Before blasting, piling, excavation or vibration-producing work, document observable condition of nearby buildings to distinguish existing defects from changes.

VERT / GREEN = documenter · JAUNE / YELLOW = vérifier · ROUGE / RED = arrêter/faire valider.

Vibration work near neighbour
Create a dated photo/video survey before work. Existing cracks undocumented
Map location/width before mobilization. Damage/movement appears during work
Pause contributing activity and obtain assessment. Baseline and monitoring archived
Keep access/consents and records.

What the professional checks

Establish reproducible baseline
Define monitoring/thresholds for work

Official sources

Ville de Montréal — inspections préventives et vibrations

Checked: 2026-08-22

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Plan a complete construction projectConnect feasibility, design, permits, concealed work, commissioning and closeout.Open →Check permit triggersPrepare the questions and documents to confirm with the local authority.Open →Check a contractorDocument licence, insurance, scope, payments, changes and warranties.Open →Update a construction costEscalate a historical cost using comparable index values.Open →Prepare pre-delivery reviewRecord documents, enclosure, systems, finishes and deficiencies before closeout.Open →