NHBC's 2026 standards update has introduced new quality evidence requirements for housebuilders across England and Wales. The defect data behind the change shows that finishing trades are consistently where build quality falls short.
The extent of the defect issue in new build homes is well documented. NHBC data indicates that the average new house has over 140 defects recorded at completion, a number that hasn't notably decreased despite years of industry efforts to improve quality. For housebuilders, rectifying these defects incurs substantial costs. Meanwhile, buyers who move into these homes often face ongoing frustration due to the need for multiple visits to resolve various issues, making this a common source of dissatisfaction in the sector.
In January 2026, NHBC standards were updated to shift the responsibility from declaration to demonstration. This 'show me, not tell me' approach to quality assurance mandates that contractors prove the quality of their work at specific stages, rather than merely self-certifying compliance. Practically, this means quality must be integrated into the delivery process from the start, rather than being checked after completion, as fixing failures later is more costly and disruptive.
Most recorded defects originate from finishing trades such as internal doors, architraves, skirting, staircase components, fitted furniture, and kitchen units. These are the elements inspected by buyers during handover and often require warranty repairs in the months after occupation. Since carpentry and joinery are highly visible, their quality determines the overall appearance, and workmanship issues tend to gather the most scrutiny.
The NHBC changes are also affecting how principal contractors organise their supply chains. Subcontractors who can provide documented proof of consistent quality during delivery are in a stronger position than those depending on informal assurances. This move towards proven quality is raising standards for acceptable subcontractor performance, with finishing trades facing the strictest scrutiny.
140 defects per home is embarrassing, and nearly all of it comes back to finishing. Doors that don't hang right, gaps in the skirting, joinery that nobody's bothered to do properly. 'Show me, not tell me' is the right call, self-certification was never worth the paper it was written on. We do first- and second-fix work that goes in right the first time. No snag lists, no callbacks. That's what you're paying for.
