The short answer
For a new-build home, a snagging survey is usually the right choice, not a full building survey. A snagging survey is a detailed inspection that lists defects and unfinished work — poor finishes, ill-fitting doors, paint and plaster faults, missing seals, plumbing and fittings issues — so the developer fixes them under warranty, ideally before or just after you move in. A building survey (RICS Level 2 or 3) is designed to assess the condition and construction of older property and the kinds of age-related defects a brand-new house should not yet have. New builds are covered by a 10-year structural warranty (such as NHBC Buildmark) and a shorter developer defects period (commonly two years), so the priority is catching the developer's snags within those windows. A snagging survey is the tool for that; a building survey would tell you little a new home does not already disclose.
New-build buyers often ask which survey to book. The answer is usually the one designed for new homes — snagging — because a building survey targets the defects of older property.
New-build survey choice
- New buildSnagging survey
- Older propertyBuilding survey (L2/L3)
- Snagging targetsDeveloper defects / finish
- WarrantyOften 10-yr (e.g. NHBC)
- Defects periodCommonly first 2 years
What each survey is for
A snagging survey and a building survey answer different questions. A snagging survey assumes the house is brand new and checks whether it has been built and finished to the expected standard. The snagger works through the property recording every defect and unfinished item — from a scratched worktop or a poorly hung door to a missing seal, a plumbing leak or render and brickwork faults — and produces a list the developer is expected to put right under the build contract and warranty.
A building survey, by contrast, is built to read the condition of an existing, often older property. It looks for damp, timber decay, movement, ageing roofs and worn services — the defects that accumulate over decades. On a brand-new home, most of those categories simply do not apply yet, which is why a full building survey is rarely the right spend for a new build.
| Feature | Snagging survey | Building survey (L2/L3) |
|---|---|---|
| Designed for | New-build homes | Existing / older homes |
| Focus | Finish and defects to fix | Condition and ageing defects |
| Who fixes findings | The developer, under warranty | You, after purchase |
| Traffic-light ratings | No (defect list format) | Yes (1/2/3) |
| Ideal timing | Before or just after completion | Before exchange |
| Typical cost | £300–£600+ | £400–£1,500+ |
Indicative UK comparison for 2025/2026; costs vary by property size and firm.
How the warranty changes the priority
New homes in the UK usually come with a structural warranty lasting around ten years — NHBC Buildmark is the most common, with others such as LABC and Premier Guarantee. The first part of that cover, typically the initial two years, is a developer defects period during which the builder is responsible for putting right defects you report. After that, the warranty narrows to major structural cover only.
- First two years (typically): developer fixes reported defects — the window a snagging survey is built for.
- Years two to ten (typically): cover focuses on major structural problems via the warranty provider.
The practical point is that the most useful inspection on a new build is one that captures the developer's snags while they are still the developer's responsibility. That is precisely what a snagging survey delivers.
When a new build might still warrant more
There are edge cases. If you are buying a new home that has stood unsold and unoccupied for a long time, a part-exchange property marketed as new, or a conversion or self-build of uncertain quality, a fuller inspection may be justified. For the standard new-build purchase from a developer, though, snagging is the right tool.
Frequently asked questions
Do I need a building survey on a brand-new house?
Usually not. A new build should not yet have the age-related defects a building survey targets, and it is covered by a structural warranty. A snagging survey, which lists the developer's defects to fix under warranty, is the more useful inspection.
Can I do my own snagging list?
You can, and many buyers note obvious issues themselves. A professional snagging survey tends to find far more — technical and hidden defects a buyer would miss — and presents them in a form the developer is more likely to act on. Both can be used together.
What does the new-build warranty cover?
Typically a structural warranty of around ten years, with the first couple of years as a developer defects period when the builder fixes reported faults, and the later years covering major structural problems. Always check the specific warranty terms for your home.
Sources & further reading
- NHBC — Buildmark warranty
- HomeOwners Alliance — snagging new build homes
- Which? — new-build homes and snagging
Figures on this page are typical UK ranges drawn from published sources and depend on the specific property and survey level. They are guidance, not a quotation.