ITSA provides independent Clerk of Works and construction quality assurance services across London, the South East and the UK. We inspect workmanship, materials and installations against drawings, specifications, Building Regulations and relevant British Standards, with clear photographic reporting at every stage.
With over 12 years of site management experience, we bring practical construction knowledge as well as independent technical assurance. That gives us a clear understanding of both site delivery pressures and the need to protect the client’s interests through impartial inspection.
Our experience spans residential, commercial, education, healthcare and hospitality projects. We work to ensure that what is built on site aligns with the design intent, specification and required standard of workmanship.
Our approach is detailed and evidence-based. Through high-resolution reporting, systematic inspections and forensic attention to workmanship, we create a transparent record of construction quality. This helps identify defects early, reduce downstream risk and support informed project decisions.
We work with clients, consultancies, contractors and project teams to strengthen delivery, protect asset value and uphold technical standards. In a sector where assumptions can lead to costly consequences, ITSA provides clarity, accountability and confidence.
ITSA operates with Professional Indemnity and Public Liability insurance in place, supporting independent, accountable assurance across all projects.
At ITSA, assurance is a disciplined process of inspection, verification, documentation and control, designed to protect quality and keep the client’s best interests at the centre of the project.