Guides
What each standard asks for, clause by clause, and the evidence an auditor or assessor will expect to see. Free and open to everyone.
ISO management system standards
ISO 9001: Quality management
Prove you deliver consistent work, every job.
3–6 months for a small business, from first gap analysis to certification
ISO 14001: Environmental management
Show you control your environmental impact and meet the law.
3–6 months, often run alongside ISO 9001
ISO 45001: Occupational health and safety
Keep your people safe and prove it to clients.
3–6 months, often combined with ISO 9001 and 14001 in one integrated system
Health and safety prequalification (SSIP)
CHAS: Contractor health and safety assessment
The prequalification most local authorities and housing providers ask for.
2–6 weeks once your documents are ready; renewed every year
SafeContractor: Contractor health and safety accreditation
Widely requested by facilities managers and commercial clients.
2–6 weeks once your documents are ready; renewed every year
Constructionline: Construction supplier prequalification
A single prequalification many main contractors and public buyers search.
2–8 weeks depending on level; renewed every year