ISO 9001:2015
Quality Management System
Certified by Bureau Veritas. Covers all civil construction, project delivery, and subcontracting activities. Certificate renewed 2023. Valid through 2026.
Standards & Certifications
Certified
Excellence
Every Cornerstone Group project is underpinned by internationally recognised quality, environmental, and safety management systems — independently audited and renewed annually.
Our integrated management system meets the highest benchmarks set by the Sri Lanka Standards Institution, the National Construction Association of Sri Lanka, and international ISO governance frameworks.
ISO Management Systems
International Quality
Standards
ISO 14001:2015
Environmental Management System
Certified across all operational sites. Encompasses environmental impact assessment, waste management, and ecological mitigation protocols.
ISO 45001:2018
Occupational Health & Safety
Our OHS management system governs all active construction sites, plant operations, and subcontractor safety obligations across 14 locations.
National Registrations
Industry & Government
Registrations
ICTAD / CIDA
Grade C1 — All Works
Highest classification issued by the Construction Industry Development Authority, authorising unlimited contract value for civil engineering, roads, bridges, and building works under government procurement.
Reg. No. C1/CE/2019/0214 Valid 2024–2025
NCASL
Corporate Member — Full Standing
National Construction Association of Sri Lanka full corporate membership, conferring eligibility for government tender pre-qualification and access to national procurement frameworks.
Member No. NCASL/CM/0178 Annual renewal 2025
IESL
Corporate Member — Institution of Engineers
Our senior engineering staff hold Chartered Engineer status. The company is registered as a corporate member with the Institution of Engineers Sri Lanka, aligned with international engineering governance standards.
Member No. IESL/CORP/0412 Annual renewal 2025
RDA
Road Development Authority — Approved Contractor
Approved Class A contractor under the Road Development Authority contractor registration scheme, eligible for expressway, national highway, and bridge works procurement.
Reg. No. RDA/AC/A/2021/0089 Valid 2024–2026
Health, Safety & Environment
Safety
Accreditations
SafeFirst Sri Lanka
Gold Status Award — 2023
Awarded Gold Status under the SafeFirst national workplace safety recognition programme for zero LTI incidents across all sites over a 24-month period.
SLSI Quality Mark
Sri Lanka Standards Institution
SLSI Quality Mark for construction materials procurement and site quality management, confirming conformance with national SLS standards.
NEBOSH Certified Team
International General Certificate
All senior site managers hold the NEBOSH International General Certificate in Occupational Health and Safety. HSE Officers hold NEBOSH Diploma.
Zero Harm Charter Signatory
National Construction Council
Founding signatory to the National Construction Council Zero Harm Charter, committing to mandatory HSE reporting, incident investigation, and corrective action protocols.
CEA Environmental Clearance
Central Environmental Authority
All projects above prescribed thresholds carry valid Central Environmental Authority clearance. Cornerstone maintains a dedicated environmental compliance team for IEE and EIA facilitation.
OSHA Trained Workforce
OSHA-30 Hour Certification
Over 180 site personnel carry OSHA 30-Hour Construction Safety certification. All new hires complete mandatory OSHA 10-Hour induction within first two weeks of site deployment.
100%
Annual Audit Compliance
0
Major Non-Conformances (2023–24)
12+
Active Certifications & Registrations
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Our accreditation register is available upon request. For formal project enquiries and tender submissions, contact our projects team.