What Is Snagging? (The List Every Builder Should Issue Before Handover)
Quick Answer
Snagging is the process of identifying and rectifying minor defects and incomplete work at the end of a construction project before final payment. A snag list documents every issue: misaligned doors, gaps in sealant, paint scuffs, missing grout, and similar finishing defects. Builders should complete their own pre-handover snagging walk-through before presenting the project to the client.
Snagging is the process of identifying and rectifying minor defects, incomplete work, or quality issues at the end of a construction project — typically before final payment is made or keys are handed over. A snag list documents every issue that needs fixing. Once all items are resolved, the snag list is signed off and the final payment or retention is released.
New Build vs Renovation Snagging
The term snagging is used in both new build and renovation contexts, but the nature of the snags differs.
On a new build, snagging tends to be more thorough and formal — the developer hands the property to the buyer, who (or whose appointed snagging inspector) walks every room recording every defect before occupation. This is normal practice and a legal expectation. Large housebuilders use standardised snag list formats and have dedicated snagging teams.
On a renovation, snagging is less formal but equally important. The builder does the work, the client walks the job, defects are noted, and the builder fixes them before the final invoice is settled. The difference is the scale and the formality of the process — but the principle is the same: defects get fixed before final money moves.
What Goes on a Snag List?
Most snags are minor — small finishes issues that individually take minutes to fix but that together indicate the quality of a builder's attention to detail.
Decoration & Finishes
- Paint scuffs and missed areas
- Uneven or thin coats
- Masking tape residue
- Overpaint on frames or glass
- Nail holes unfilled in skirtings
Tiling & Wet Areas
- Missing or cracked grout
- Sealant gaps (bath, basin, worktop)
- Lippage between tiles
- Tile chips or breakages
- Uneven tile pattern alignment
Joinery & Fittings
- Doors not closing fully or hanging
- Drawers stiff or misaligned
- Skirting board joint gaps
- Architrave not flush at corners
- Window restrictors missing
Electrical & Plumbing
- Switch plates or sockets not flush
- Light fittings loose or untrimmed
- Taps dripping or stiff
- Toilet seat loose
- Radiator valves leaking
Snagging and Retention
On contracts with a retention clause, snagging is directly linked to when the second half of the retention is released. Under a standard JCT contract, half of the retention is released at practical completion (when the main works are done) and the remaining half is released at the end of the defects liability period — typically 6–12 months later. For formal contracts on larger projects, the retention and defects process is governed by the contract terms as set out by the RICS and JCT standard forms.
The defects liability period is the contractual window during which the builder must return to fix any defects that appear — not just those on the original snag list, but anything that fails or develops as a defect. This is different from a warranty — it's a contractual obligation, and failing to respond to a defects notice can result in the employer deducting the cost of third-party repair from the final account.
For more on how retention works in construction contracts, see What Is Retention in Construction?
How to Handle Snagging as a Builder
The single most effective thing a builder can do is conduct their own pre-handover snagging walk-through before the client ever sees the finished job.
Walk the property room by room with a critical eye. Look at every surface, every fitting, every joint. Open every door and drawer. Turn on every tap and light. Check every tile line. Fix what you find yourself, before your client sees it and puts it on a formal list.
A client who walks a job and finds only two or three minor items will assume the rest is right. A client who finds twenty items loses confidence in the work — even if the underlying build quality is perfectly sound. Perception matters at handover.
Pindi's take: After 32 years in the trade, I can tell you that a clean handover is one of the best things you can do for your business. A client who hands over final payment with a smile is the one who calls you back, leaves a review, and recommends you to their neighbour. A client who gets a long snag list and a slow response to fixing it tells a different story. Self-snag your jobs. It costs you an hour and it's worth more than any marketing spend.
If your contracts include a schedule of works, this also makes the snagging process cleaner — the client can compare what was agreed against what was delivered, item by item. Builders who handle snagging professionally — with a self-snag walk-through, a clean final payment, and a prompt response to any post-completion defects — earn consistently better reviews. Check how top-rated builders present themselves on Trustpilot and you'll see a pattern: clean handovers and fast snag resolution are mentioned repeatedly in 5-star reviews.
Producing a professionally structured quote that includes a retention clause protects both parties and sets clear expectations at handover. See our best quoting software for builders UK guide for tools that automate the contract and schedule of works generation.
Frequently Asked Questions
What is a snag list in construction?
A snag list is a written record of all minor defects, incomplete work, or quality issues identified at practical completion — before the final payment is released. Each item is described, located, and assigned for rectification. Once all items on the snag list are resolved, the list is signed off and the final payment is made. On formal contracts, the snag list is typically issued alongside the practical completion certificate.
What are typical snags on a construction project?
Typical snags include: paint scuffs and uneven decoration, missing or cracked grout, sealant gaps around baths, basins and worktops, doors and drawers that don't close properly, light switches or sockets not flush with the wall, incomplete tile work, hairline cracks in plaster, scratched glass or glazing, missing beading or trim, hardware not fully tightened, and minor plumbing drips. Most are quick to fix — the issue is identifying every one before handover.
How long does a builder have to fix snags?
Under most standard UK construction contracts (JCT, for example), snags identified at practical completion must be rectified during the defects liability period — typically 6 to 12 months after practical completion. Any defects that appear during this period are also the builder's responsibility to fix. Retention money (usually 2.5–5% of the contract sum) is held back until the defects liability period ends and all snags have been addressed.
Should a builder do their own snagging walk-through?
Yes — every builder should do a full pre-handover snagging walk-through before the client or their surveyor sees the finished job. Walk the project room by room with fresh eyes: look at skirting joints, window reveals, tiling, paintwork, all fixings and hardware. Fix everything you find yourself before the client gets there. A self-snagged job always produces a shorter client snag list, a faster final payment, and a happier client — who is then far more likely to refer you.
What is practical completion in construction?
Practical completion is the formal stage in a construction contract when the works are substantially complete — the building is fit for its intended use even if minor defects remain. It is typically certified by the contract administrator (architect or QS). At practical completion, the defects liability period begins, half the retention is released, and the snag list is formally issued. Practical completion does not mean perfect completion — it means the building can be occupied while minor issues are rectified.
Can a client withhold final payment over snags?
A client can withhold the portion of payment proportionate to unresolved snags, but not the entire final payment if the main works are complete. Under UK consumer contract law and standard JCT contract terms, the client is entitled to retain funds equivalent to the cost of remediation — but withholding the entire balance over minor snags is disproportionate and may give the builder grounds to claim the balance. Retention clauses in commercial contracts formally manage this — typically 2.5–5% of the contract value is held back until defects are resolved. A well-written schedule of works makes the distinction between 'complete' and 'snagged' much clearer.
Quote Every Job Properly — From Floor Plan to Quote Pack
RenoCalc generates your schedule of works, cover letter, and contract pack from your floor plan in under 3 minutes. Clean documentation means cleaner handovers. Built by Pindi Sahota, 32 years in the trade.
Start Free — No Card Needed