Every job has snags. Some are tiny (paint, silicone, doors rubbing), some are serious (leaks, movement, failed membranes). The trick is to agree how they'll be found, fixed and argued about before you hand over the keys.
You've also got a time bomb running in the background: the Limitation Act 1980 sets deadlines for how long people can sue over defects. That feeds straight into how long you're "on the hook" after a job.
1. Snags vs defects -- what's the difference?
People use the words loosely, but it helps to separate them.
Snags / snagging items
- Small bits of incomplete or imperfect work -- paint touch-ups, cracked tiles, stiff doors, missing mastic.
- Usually picked up around practical completion / handover on a snagging list and sorted in the defects or rectification period.
Defects
- Work that doesn't meet the contract, drawings, spec or the implied duty to use reasonable skill and care (or fitness for purpose where that applies).
- Can be patent (obvious) or latent (hidden and only show up later -- e.g. leaks, structural problems, poorly built roofs).
Both can lead to rows, but the big money and legal fights tend to be over defects that matter to performance or safety, not chips in paint.
2. Defects periods, snagging lists and what the contract should say
Most standard contracts build in a "defects liability period" or "rectification period" after practical completion, typically 6--24 months depending on the form.
Good contracts will spell out:
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When practical completion happens and what it means (essentially: fit for use, with only minor snags left).
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The length of the defects/rectification period (often 12 or 24 months from practical completion under JCT; different again under new-build codes and warranties).
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How snags/defects are notified (written list, portal, email, within certain timeframes).
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Your obligation as contractor to come back and fix defects within a reasonable period at your own cost.
For new-build homes, you've also got warranty and code layers (e.g. NHBC, Consumer Code for Home Builders, New Homes Ombudsman) which give buyers specific routes to chase defects and snags over the first years.
If none of this is written down, you're as much in the hands of implied terms and general negligence law as you are the contract -- not a great place to be.
3. How long you're on the hook -- Limitation Act basics
The Limitation Act 1980 doesn't tell you what you're liable for -- it sets how long someone has to bring a claim. Miss the window and the claim is time-barred, even if the works were clearly defective.
Very simplified:
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For a simple contract (most unsigned or standard contracts not executed as a deed): usually 6 years from the date the cause of action accrues. In building work, that's often taken as practical completion or when the defect damage first occurs.
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For a deed: usually 12 years from that date. Lots of big construction appointments and building contracts are executed as deeds for this reason.
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For latent defects in negligence: there's a further "discoverability" element -- a claim can sometimes be brought up to 3 years from when the defect was discovered or ought to have been discovered, subject to a long-stop, often 15 years.
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Residential work also brings in the Defective Premises Act and, more recently, Building Safety Act tweaks that extend limitation in some cladding/structural scenarios.
So no, your liability doesn't magically end when the defects period finishes. That period is about a contractual short window to get you back on site easily. The Limitation Act is the long shadow in the background.
4. How defects and snags turn into disputes
Disputes in this area are usually a mix of bad process and vague contracts.
Common flashpoints:
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Disagreement over whether something is a defect or just wear and tear / user damage / acceptable tolerance.
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Arguments about whether a defect was notified in time under the contract or warranty scheme.
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Contractor says "you've been living in it for years" -- employer says "we only just found the problem and it was always there."
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Confusion between the end of the defects period and the end of all liability -- they're not the same thing.
Once lawyers get involved, you're into expert reports, arguments over when the defect really "happened", and whether limitation has expired. That's slow, expensive and distracting compared to just having a clean snag/defect process and record.
5. Protecting yourself -- what to build into contracts and what to do on site
You can't avoid all defects, but you can set things up so they're surfaced and sorted without a war.
In the contract, you want:
- A clear definition of practical completion and who certifies it.
- A stated defects/rectification period (length and start date).
- A simple, written snag/defect notification process (format, timeframes, where to send it).
- A straightforward obligation for the contractor to return and fix defects within a reasonable time once notified.
- For bigger jobs, clarity on what happens if the contractor doesn't come back -- can the employer get others in and set-off the cost?
On the ground, you want habits:
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Before handover: do a proper joint inspection and produce a snagging list with photos and locations. Both sides keep a copy.
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During the defects period: log each new defect in writing with dates and a simple description; builder acknowledges and gives a visit date.
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If you're the contractor: keep records of what you went back for, what you fixed, and any items you believe are not genuine defects (with photos).
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Near the end of the defects period: consider a final walk-through and sign-off, especially on bigger works, so there's a clear record of what was still in dispute at that point.
All of that won't stop someone issuing a claim 8 or 10 years down the line, but it will give you something concrete to point at instead of arguing from memory.
Defects and snagging quick guide
Use this as a "before handover / during defects period" cheat sheet.
- Contract says who certifies practical completion and what it means (only minor snags left).
- Defects / rectification period length is written down (e.g. 12 or 24 months from PC).
- Process for reporting defects/snags is agreed (email/portal/form, where it goes).
- Rights if contractor doesn't return are clear (can the client get others in and deduct?).
- Joint snagging inspection done at PC; written snag list with locations and photos.
- Each snag/defect logged with date, description, and target fix date.
- Contractor records what's been rectified, with dates and any evidence (photos).
- Everyone understands that the defects period is not the same as the end of all legal liability under the Limitation Act.
If you've ticked those off, you've already taken a lot of heat out of future defects rows -- and given yourself paperwork you can lean on if it ever gets legal.
Disclaimer: SiteKiln gives you plain-English information, not legal advice. Talk to a solicitor before making big decisions on live disputes.
What to do next
- Before handover on your current job, arrange a joint inspection and produce a written snag list with photos and locations.
- Check your contract for the defects/rectification period length and how defects should be notified.
- If a defect is reported, log it in writing with dates, description and a target fix date -- then go back and fix it promptly.
- Understand that the defects period ending does not end all legal liability -- the Limitation Act sets much longer deadlines.
- If you are a homeowner, check whether your new-build warranty (NHBC or similar) covers the defect before going legal.
Sources
- Limitation Act 1980 -- https://www.legislation.gov.uk/ukpga/1980/58/contents
- Defective Premises Act 1972 -- https://www.legislation.gov.uk/ukpga/1972/35/contents
- Building Safety Act 2022 -- https://www.legislation.gov.uk/ukpga/2022/30/contents
- Consumer Rights Act 2015 -- https://www.legislation.gov.uk/ukpga/2015/15/contents
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