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Terry Williams from Coventry University has done some research into defect analysis in new property and the role of the NHBC

His research led him to sample 32 properties, that had a total of 4523 defects, with at least one breach of the Building Regulations in each property. That equated to an average of 141 defects per property surveyed. Of the defects found; 4% posed a health and safety risk, with 18% of the defects compromising the building’s integrity. Of these, 8% presented a future structural risk and over half (51%) could permit moisture penetration.

His research found that 28% of the faults were due to a general lack of care with 72% being caused by sub standard workmanship.

To view the full version of this research report titled “An investigation of finishing quality in new housing” click on the link to download the PDF file. [download]

An at a glance summary of the areas where defects were found is illustrated in the charts below.

Research into defects
found in new homes

INTERNAL DECORATION
37%

BUILDER’S WORKS
16%

LANDSCAPING &
HARD SURFACES
2%

GENERAL DAMAGE & POOR PRESENTATION
11%

PLUMBING 2%

INTERNALJOINERY
6%

INTERNAL SURFACES
(non-decoration)
23%

ELECTRICAL 1%

EXTERNAL FINISH
2%

HEALTH & SAFETY
RISK 4%

VENTILATION
10%

DRAINAGE
14%

LACK OF CARE
28%

SUB-STANDARD WORK
72%

Details of Builder’s Work defects