A snagging survey is an independent inspection of a new-build home that records defects — known as snags — before you take ownership or shortly afterwards. It produces a written snagging list the developer is expected to fix, covering anything from cosmetic blemishes to faults that breach building standards. The survey carries no legal weight on its own, but a clear, evidenced list gives you a stronger basis for asking a builder to put things right.
What is a snagging survey?
A snagging survey is carried out by a professional inspector — often a chartered surveyor or a specialist snagging firm — who checks a newly built property against the standards expected for that type of home. The inspector looks at the build quality, the finish and whether components work as intended. They are not assessing market value, as a mortgage valuation would; the focus is on workmanship and compliance.
The outcome is a detailed report, usually with photographs and location references for each item. A snag is any defect, omission or substandard finish that the developer should reasonably correct. That ranges from a poorly hung door to a missing seal, an uneven wall or a non-functioning extractor fan. Some snags are minor and cosmetic; others point to issues that could worsen if left.
An independent survey differs from the developer's own handover check. The builder will inspect a plot before completion, but their priority is readiness for occupation. An independent inspector works for the buyer and has no incentive to overlook problems.
Common snags in a new home
A snagging survey is an independent inspection of a new-build home that records defects — known as snags — before you take ownership or shortly afterwards.
New-build defects tend to fall into recognisable patterns. Many are cosmetic and easy to fix, but together they can add up to a long list on a single property. Spotting them early matters, because some are easier to address before furniture and decoration are in place.
- Paintwork: patchy coverage, drips, missed areas and damage to walls or skirting.
- Doors and windows: misaligned hinges, gaps in seals, stiff catches and scratched glass.
- Plastering and walls: cracks, uneven surfaces, visible joints and poor finishing around sockets.
- Tiling and grouting: uneven spacing, cracked tiles and gaps that let water through.
- Kitchens and bathrooms: unsealed worktops, loose fittings, leaks and silicone applied poorly.
- Flooring: lifting edges, squeaks, gaps and damage hidden under packaging.
- External work: blocked guttering, mortar splashes on brickwork, and unfinished landscaping or drainage.
More serious snags can include problems with insulation, ventilation, drainage falls or electrical work. These are less visible and often need a trained eye to identify. An inspector will test taps, sockets, heating and ventilation rather than rely on appearance alone.
Timing: before completion or after?
Timing is one of the most common questions, and the answer depends on what the developer allows. Some builders permit a pre-completion inspection, sometimes called a quality check or new-home inspection, during a short window before you legally complete. This is the ideal moment, because issues can be raised while the developer still holds the property.
Not every developer offers access before completion. Where they do not, the survey takes place soon after you move in, often within the first week or two. Acting promptly matters because many warranty schemes set out a defects period — frequently the first two years — during which the developer remains responsible for putting faults right.
If you can only inspect after completion, this does not weaken your position much, provided you report snags quickly and in writing. What you should avoid is delay. Leaving snags unrecorded for months can make it harder to show a fault existed from the start rather than arising through wear or use.
It is worth confirming the developer's process early, ideally before exchange of contracts. Asking how and when an independent inspection can be arranged gives you time to book one around your moving date.
What the snagging list includes
The snagging list is the practical output of the survey. It sets out each defect clearly enough that a builder can locate and understand it without ambiguity. A well-prepared list reduces disputes about what was found and where.
A typical list records:
- A description of each snag in plain terms.
- The room or location, often room by room.
- Photographs showing the issue.
- An indication of severity, separating cosmetic items from functional faults.
- Reference to the relevant standard where a snag breaches building or warranty requirements.
Once the list is complete, the buyer usually sends it to the developer and agrees a timescale for repairs. The developer is not obliged to act on every item a buyer dislikes — they are responsible for genuine defects, not for matters of preference or normal settlement, such as fine hairline cracks that appear as a new building dries out. A clear distinction between true defects and cosmetic preferences helps keep the process straightforward.
How warranties cover later faults
Most new-build homes come with a structural warranty, commonly an NHBC Buildmark policy or an equivalent from another provider. These warranties typically run for ten years and work in two phases. In the early period — usually the first two years — the developer is liable for defects, and the warranty provider can step in if the builder fails to act.
After that initial period, cover narrows to major structural problems for the remainder of the term. This later stage protects against significant issues such as serious defects in foundations, load-bearing walls or the roof structure, rather than minor finishing snags. Cosmetic items are generally not covered once the developer's defects period ends.
A snagging survey and a warranty work alongside each other rather than overlapping. The survey identifies faults early so they can be fixed under the developer's responsibility, while the warranty provides a fallback if the builder does not respond or if a structural problem emerges later. Reading the warranty terms carefully tells you what is covered, what is excluded and how to make a claim. Knowing both your snagging route and your warranty rights puts you in a stronger position throughout the first decade of owning a new home.
Last reviewed: June 2026