NHBC Building Control Services Issued Improvement Notice Over Inspection Failures

The Building Safety Regulator (BSR) has issued an improvement notice to NHBC Building Control Services, the UK's largest registered building control approver, after finding the organisation failed to…

The Building Safety Regulator (BSR) has issued an improvement notice to NHBC Building Control Services, the UK's largest registered building control approver, after finding the organisation failed to maintain adequate documentation during construction site inspections. The enforcement action, which began in June 2026, signals a significant test of the regulator's expanded powers and carries implications for thousands of building projects nationwide.

The regulator identified that NHBC Building Control Services failed to properly record evidence in site inspection reports, breaching operational standard rule 3.9. This rule sets out how building control bodies must document their oversight and verify compliance throughout the construction process. The notice has sparked wider industry debate about the quality of record-keeping and the effectiveness of regulatory oversight in the sector.

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Deadline for Compliance

NHBC Building Control Services has until 8 September 2026 to address the deficiencies. The notice specifically targets failures to gather and store sufficient evidence during site visits — a process essential for ensuring new developments meet mandatory safety and quality standards.

The enforcement is particularly significant given the organisation's dominant market position. NHBC Building Control Services employs more than 12 percent of all registered building inspectors in the country. Failure to meet the BSR's standards could have broad consequences for the thousands of projects currently under its supervision.

Financial Strength Amid Regulatory Scrutiny

The regulatory action comes despite NHBC's strong financial performance. For the financial year ending 31 March 2025, the company reported a turnover of £16.7 million and a pre-tax profit of £5.3 million. As the leading private-sector building control provider, its ability to rectify documentation procedures is viewed by industry analysts as a critical test for the BSR's expanded oversight powers.

Other providers in the sector continue to compete for market share. Cornwall Council Building Control, a member of the Local Authority Building Control (LABC) network, operates as the largest provider in its region, drawing on more than 3,000 professional surveyors across the national LABC system.

Sector Pressures and Digital Reform

The scrutiny of NHBC comes amid broader regulatory transition and rising safety costs across the construction industry. Industry participants have reported inconsistencies in BSR processes, particularly around Gateway 2 and Gateway 3 approvals. While some projects receive Gateway 2 approval in 12 weeks, others have faced delays of up to nine months. Major construction firms, including Willmott Dixon, have responded by strengthening their pre-start procedures and evidence-gathering protocols to avoid delays in the final stages of project delivery.

To address these systemic issues, the Ministry of Housing, Communities and Local Government (MHCLG) recently announced plans to establish a single construction regulator focused on interoperable digital data throughout the building lifecycle. The government intends to release a digital building control roadmap, backed by an initial £1 million in funding for a local authority-led digital consortium.

Legacy Safety Costs Mount

The financial burden of legacy safety issues remains a significant factor for major developers. Barratt Redrow recently reported recovering £38 million from subcontractors for defects on older developments. However, its total building safety expenditure reached £155 million last year and is forecast to hit £300 million for the current year, potentially rising to £450 million by the 2027/28 period.

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The urgent need for improved oversight is further underscored by ongoing safety crises. In Edinburgh, residents of the Bond Building were recently evacuated due to fire risks, with some told they may need to relocate for up to two years. On 10 July 2026, a warrant was granted to a demolition contractor to secure a building at risk of collapse in Kettering, following health and safety charges brought against the property's director.