Partnership Due Diligence — Construction Companies UK

Prioritize director count and composition (ch_officers data—591,464 records available), PSC ownership structure (ch_psc with 568,960 records showing concentration patterns), and financial accounts spanning minimum three years. The data reveals average director signal score of 1.6 and PSC concentration score of 14.0-14.5, indicating these are key risk indicators in construction. Cross-reference this with charges register and filing timeliness. This integrated view reveals governance stability, financial health, and accountability mechanisms essential for construction partnerships where joint liability is automatic.

PSC concentration indicates whether ownership and decision-making authority are distributed across multiple stakeholders or concentrated in few individuals. The construction industry average PSC concentration score of 14.0-14.5 suggests many firms have concentrated ownership, creating governance risks. When one or two individuals control the company without meaningful board oversight, poor decisions—underbidding projects, cutting safety corners, unpaid subcontractor invoices—occur without internal challenge. In partnerships requiring joint accountability for health, safety, and financial obligations, concentrated PSC ownership creates unilateral control risk and reduces your ability to influence critical decisions affecting your involvement.

Exercise heightened due diligence. While 292,343 construction companies formed since 2020 represent 57% of the active market, newer companies lack established track records, weathered supply chain disruptions, or proven financial resilience. Request detailed references from completed projects, examine founders' prior construction experience, verify financial reserves (typically 3-6 months operating costs minimum), and confirm professional insurance coverage. Sector average company age is 9.5 years; companies significantly below this lack demonstrated longevity. Consider whether the project complexity warrants established operators versus newer firms, and potentially require enhanced insurance or performance bonds for newer partners.

Construction companies should typically have 2-4 directors with complementary expertise (operational, commercial, technical) and stable tenure of 3+ years. This composition provides governance checks-and-balances while enabling decisive management. Directors should have relevant construction industry background, ideally with prior company directorships demonstrating experience. Avoid companies with single directors managing complex operations, directors appointed within past 6 months (unless replacing departed individuals clearly documented), or frequent turnover suggesting disputes. Verify all directors against disqualification registers. A healthy structure shows distributed accountability essential for managing health, safety, and financial obligations in partnerships.

Review three years of filed accounts examining revenue consistency or growth, gross margin trends (typically 15-25% for construction), operating profit, cash position, and working capital ratios. Calculate debt-to-equity ratio; construction companies with ratios above 2:1 are heavily leveraged. Check for consistent cash conversion; companies reporting profits but declining cash reserves indicate collection problems or inventory mismanagement. Assess whether accounts show provision for contract losses, indicating awareness of project risks. Late accounts filings or repeated missing deadlines are warning signals. For multi-year projects, companies must demonstrate 12+ months cash runway and positive working capital trends, particularly if executing fixed-price contracts with extended payment terms.