QA / QC

Punch List / Snag List

List of incomplete/defective items at substantial completion that must be rectified before final handover.

Also calledpunch listsnag listdefects list
Definition

A punch list (also called snag list or defect list) is the list of incomplete or defective items at substantial completion of a construction project, requiring rectification before final handover. The Indian construction term is 'snag list'; western term is 'punch list'. Generated through systematic walk-through inspection by the project team near the substantial completion milestone, the punch list captures all minor defects, finishing imperfections, and incomplete items that don't prevent occupancy but must be addressed before final settlement.

Typical punch list items: (1) Cosmetic defects — scratched surfaces, paint touch-up, small tile chips. (2) Incomplete items — missing finish strip, unfinished electrical fixture, light bulbs not installed. (3) Architectural finishing — door alignment, window operation, hardware installation. (4) Mechanical/electrical — flow rates, equipment calibration, safety systems. (5) Site work — landscaping, paving, drainage final touches. The list is typically prepared collaboratively by the project structural engineer, client, and contractor walking through the building with a checklist, photographing and noting each item. Modern projects use mobile-app-based punch list tools (PlanGrid, Procore) for efficient capture and tracking.

Punch list resolution: (a) Documentation — each item with location, description, photo, severity. (b) Assignment — to the responsible sub-contractor or trade. (c) Schedule — typical resolution time 2-4 weeks. (d) Verification — re-walk to verify completion. (e) Closure — sign-off when verified. Failed items remain on the list for further work. The punch list is critical for: (1) Project closeout and final settlement; (2) Occupancy approval (some items may delay occupancy); (3) Client satisfaction at handover; (4) Establishing the warranty starting point. The most-overlooked aspect of Indian punch lists: incomplete documentation. Many projects have lists with vague items ('paint touch-up needed') leading to disputes about what's actually been completed. Detailed photography + GPS location + sub-contractor assignment is the modern Indian best practice.

Where used
  • All construction projects — at substantial completion milestone
  • Residential and commercial building handover
  • Industrial plant commissioning
  • Renovation project closeout
  • Government and PSU project final acceptance
Acceptance / threshold
Per project specification + ISO 9001: collaborative walk-through; comprehensive list with photos and locations; sub-contractor assignments; resolution within 2-4 weeks; verified closure with sign-off; final retention released after completion.
Site example
Site reality: a Bengaluru residential project's punch list at substantial completion had 240 items (typical for 100,000 sq ft residential — 2-3 items per 1,000 sq ft). Resolution took 5 weeks (slightly longer than ideal 2-4 weeks). 220 items closed at first walk-through; 20 items required second iteration. Total contractor cost: ₹14 lakh in remediation labour. Client retention released ₹75 lakh on punch list closure. Modern Indian projects use mobile apps (PlanGrid, Procore) for systematic punch list management.
Frequently asked
What is a punch list?
A punch list (or snag list) is the list of incomplete or defective items at substantial completion of a construction project, requiring rectification before final handover. Generated through systematic walk-through inspection. Captures minor defects, finishing imperfections, and incomplete items. Typical Indian residential projects: 200-400 items at substantial completion, resolved over 2-5 weeks.
When is the punch list prepared?
Near substantial completion of the project — when major work is finished and the building is ready for occupancy. Typically prepared by collaborative walk-through with structural engineer, client, and contractor. Some projects do progressive punch lists at major milestones (e.g., per floor, per unit) for ongoing remediation. Final punch list at substantial completion captures any remaining items.
What happens if punch list items aren't fixed?
Per project specification: (1) Final retention (typically 5-10% of contract value) is held until punch list is closed. (2) Final occupancy may be delayed if items affect safety or essential functionality. (3) Disputes about what counts as 'completed' may go to mediation or arbitration. (4) Defective items beyond reasonable warranty period become contractor liability under defect liability period (typically 12 months). Best practice: collaborative resolution with photo documentation; modern Indian projects use mobile apps for tracking.
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