Snagging Properly: How Defects Are Categorised, Recorded and Closed

A useful snag list is a structured document with categories, locations, evidence and a close out trail. A list of complaints in a message thread is not one.

Snagging fails for procedural reasons rather than technical ones. Items are recorded vaguely, so nobody knows which door is meant. They are not categorised, so a cracked window and a paint mark receive the same attention. They have no evidence attached, so closure is disputed. And they are never formally closed, so the list grows until someone declares it finished. This is how a surveyor actually structures the work.

Before stage one

Snagging should not start until the area is genuinely complete, because inspecting unfinished work generates items that would have disappeared anyway and destroys the credibility of the list. The inspector also needs the documents against which to judge: drawings, specifications, the approved benchmark samples and the tolerance references.

• A defined inspection area that the contractor has declared complete in writing.
• Drawings, specifications and the approved benchmark samples available to the inspector.
• Tolerance references for the relevant trades, taken from the specification rather than assumed.
• A numbering and location system agreed in advance, usually by room reference and element.
• A single recording platform or register that both parties use, with no parallel lists.

Stage 1: Agree the categories before the first inspection

Categorise by consequence, not by trade. A workable set separates items that affect safety or statutory compliance, items that affect function such as a leak or a device that does not operate, items that are incomplete work, and items that are cosmetic. Each category gets a different priority and a different acceptance route, which is the whole point of categorising.

• Deliverable: An agreed category definition with examples, issued to both parties before inspections start.
• Owner: Supervising consultant with the contractor and the owner.
• Approval gate: Categories agreed before the register is opened.

Stage 2: Set a location and numbering convention

Every item needs a location precise enough to find without the inspector present: building, level, room reference, element and position within the room. Bedroom door is not a location when there are four of them. A consistent convention also lets the register be sorted by room so a trade can work through an area in one visit.

• Deliverable: A location convention tied to the room numbering on the drawings.
• Owner: Supervising consultant.
• Approval gate: Convention published and used from the first item recorded.

Stage 3: Inspect systematically and record with evidence

Work room by room in a fixed order, element by element within the room, so nothing is skipped. Each item gets a description of the defect, not just the symptom, a photograph, and where relevant a measurement against the specified tolerance. A photograph without a reference point in it is of limited use, so include something that fixes the position.

• Deliverable: A register entry per item with category, location, description, photograph and any measurement.
• Owner: Inspecting surveyor or consultant.
• Approval gate: The area inspection is complete and issued before rectification starts.

Stage 4: Distinguish defects from variations and from incomplete work

Three different things end up on snag lists. A defect is work that does not comply with the contract. Incomplete work is work that has not been done. A variation is something the owner now wants that was never specified. Mixing them means the contractor argues about the whole list, and genuine defects get lost in that argument.

• Deliverable: The register separated into defects, incomplete items and owner requested changes.
• Owner: Supervising consultant.
• Approval gate: Classification agreed before rectification is instructed.

Stage 5: Issue, rectify and record the response

The register goes to the contractor with a response required per item: rectified, disputed with a reason, or not applicable with an explanation. A blanket response marking everything done is not a response. Each rectification should carry its own evidence, usually a photograph taken from the same position as the original.

• Deliverable: A contractor response per item with rectification evidence attached.
• Owner: Contractor, item by item.
• Approval gate: No item moves towards closure without a response and evidence.

Stage 6: Re-inspect and close out item by item

The inspector returns and verifies each item against the original record, closing those that are genuinely rectified and reopening those that are not, with a note on what remains. Items rejected twice deserve escalation, because a repeated failure usually points to a method problem rather than to carelessness.

• Deliverable: A closed out register with the verification date and inspector for each item.
• Owner: Supervising consultant.
• Approval gate: Area accepted only when every item is closed or formally agreed as carried forward.

Stage 7: Carry the residue into the defects liability period

Some items legitimately remain open at handover, including those awaiting a part, those that can only be tested in a particular season and those the owner has agreed to defer. Record them explicitly as carried forward, with a target date and the retention or security position noted, rather than letting them dissolve into the general list.

• Deliverable: A carried forward schedule issued with the handover documentation.
• Owner: Supervising consultant with the owner.
• Approval gate: Carried forward items listed and acknowledged in the handover record.

Handovers between stages

The important handover is from the construction snag list to the defects liability register. They are different documents with different legal positions: snags are incomplete or non compliant work at handover, while defects appear during the liability period. Keep them separate but linked, so that an item which was snagged, closed and then recurred is visible as a recurrence rather than appearing as a fresh problem, because recurrence is the strongest evidence that the original rectification was cosmetic.

How you know it is finished

The snagging process has worked when every item has a category, a precise location, evidence of the defect, a contractor response, evidence of rectification and a verification date, and when the carried forward schedule is short and explicit. It has failed when the list exists as photographs in a message thread, items are described as the usual problem in the bathroom, and closure happened because the owner stopped pursuing it.

Domira builds and supervises projects across Saudi Arabia, and this is the level of detail its site teams work at. Send the drawings or the site, and Domira will tell you what the specification has to say before anyone prices it.