Snagging

Snagging is the inspection process by which defects, incomplete works, and non-compliant items are identified and recorded in a newly constructed or refurbished building. The term is used primarily in UK construction practice; the equivalent North American term is punch-listing. The output of a snagging inspection is a snag list — a structured schedule of items requiring attention before the project can be considered finished.

Snagging is most commonly associated with new residential developments, where buyers increasingly commission independent snagging surveys before or shortly after legal completion. A professional snagging survey on a new-build home typically takes 2-4 hours and may identify 50-200 items across the property, ranging from minor cosmetic imperfections to more significant defects in structure, waterproofing, or services.

In commercial construction, snagging is carried out by the employer's agent or contract administrator as part of the practical completion inspection. The inspection is usually item-by-item against the contract specification and drawings — a systematic check of every surface, fitting, and system rather than a general visual inspection.

The thoroughness and documentation quality of a snagging inspection directly affects the contractor's ability to respond effectively. A vague description ("paint defects in bedroom 3") leaves room for argument. A precise description with a clear photograph ("paint run on north wall of bedroom 3, approximately 300mm below light switch, 200mm long") is unambiguous and allows the contractor to locate, assess, and remedy the item without a return visit from the surveyor.

360° panoramic photography from each room or space — pinned to the floor plan — provides the spatial anchor that makes snagging records unambiguous. Every item on the snag list can be cross-referenced to the panorama from that room, providing full context: the scratched door handle is visible in the same image as the room number, the window, the opposite wall, and the ceiling. This context is what separates a well-documented snag from a vague note that a contractor will dispute.