New Build Snagging Calculator 2026
Estimate the number of defects and potential rectification costs on your new build home. Based on industry data by builder tier and property type — and why a professional snagging survey is almost always worth the cost.
New Build Snagging Cost Estimator
Estimated snag count (low / mid / high)
98 – 140 – 196
defects estimated
Potential cost to fix (if builder refuses)
- Minor / cosmetic (84 items × £50)
- £4,200
- Medium / functional (42 items × £250)
- £10,500
- Major / structural (14 items × £1,500)
- £21,000
- Total potential rectification cost
- £35,700
Figures are indicative estimates based on industry averages. Actual snag counts and costs will vary. This calculator does not constitute a survey or professional report.
What to expect from new build snagging in 2026
Despite improvements in build quality standards, new homes in the UK consistently complete with a significant number of defects — often more than buyers expect. Research by the New Homes Quality Board and consumer groups has found that over 90% of new build buyers report problems after moving in, with many experiencing more than 100 snags.
The New Homes Ombudsman, introduced under the Building Safety Act 2022, provides buyers with a formal route to seek redress. Developers who are members of the New Homes Quality Code must adhere to higher standards of customer care and must address snags within defined timeframes.
Typical snag categories and costs
| Category | Typical proportion | Examples | Indicative cost to fix |
|---|---|---|---|
| Minor / cosmetic | ~60% | Paint marks, scratches, seal gaps | ~£50 each |
| Medium / functional | ~30% | Stiff doors, uneven tiling, leaks | ~£250 each |
| Major / structural | ~10% | Roof defects, drainage failures | ~£1,500 each |
Frequently asked questions
- What is snagging on a new build property?
- Snagging refers to identifying defects, unfinished work, or poor workmanship in a newly built home before or shortly after legal completion. Snags can range from minor cosmetic issues (paint splashes, scratched tiles) to medium functional problems (stiff doors, uneven flooring) to major structural concerns (roof defects, drainage failures). A professional snagging surveyor will produce a written report detailing every issue found.
- How many snags is typical on a new build?
- Industry estimates suggest new builds from volume housebuilders (Barratt, Persimmon, Taylor Wimpey) commonly have 100–200 snags. Mid-market builders typically show 70–130 issues, while premium or custom build homes may have 30–80. The exact number depends on the size and type of property, the number of bedrooms, and the quality of site management. Our calculator provides a low/mid/high range based on these variables.
- Should I get a professional snagging survey?
- Yes — strongly. A professional snagging survey should ideally be conducted before legal completion, while you still have maximum leverage over the developer to fix issues. Once you complete, you are relying on the developer's goodwill or warranty claims, which can be slow. A snagging survey typically costs £300–£600 and can identify thousands of pounds' worth of defects. The developer is legally obliged to rectify genuine defects within the first two years.
- Who is responsible for fixing snags on a new build?
- The developer (housebuilder) is legally responsible for rectifying defects in the property during the initial warranty period. Under the Consumer Code for Home Builders and most NHBC Buildmark warranties, you have a 2-year period during which the developer must address reported snags at no cost to you. For structural defects, NHBC Buildmark cover extends to 10 years.
- What if my developer will not fix my snagging list?
- If your developer refuses or repeatedly delays fixing snags, you have several options. First, submit your complaints in writing. If unresolved, you can contact the NHBC Resolution service or the New Homes Ombudsman (for developers who are members). For serious structural defects under the NHBC Buildmark policy, you can make a warranty claim directly. As a last resort, civil court action is possible for breach of contract.
Related tools
- Help to Buy equity loan calculator — Calculate your equity loan repayment based on current property value
- Stamp duty calculator — Calculate SDLT on your new build purchase
- Property guides — Expert guides for new build buyers