NAS Certification for
Gas Contractors.
Gas Safe registered engineers and heating contractors working for housing associations, local authorities, and FM clients need business-level compliance credentials alongside their trade competence. NAS provides independently assessed business compliance certification covering the laws and standards your clients check before awarding gas and heating contracts.
Why Gas Contractors Need NAS Business Certification
Gas Safe registration proves technical competence. NAS certification proves business compliance. Housing associations, local authorities, and FM clients require both. NAS covers the business compliance areas that procurement teams check when awarding gas servicing, installation, and maintenance contracts.
NAS Basic — £349/yr
Health and safety policy and arrangements, risk assessments and method statements, COSHH, CDM duties, training, insurance and subcontractor checks — the SSIP core criteria.
NAS Bronze — £749/yr
Everything in Basic plus legal identity and licences, employers’ liability insurance, data protection, equality, complaints handling, employment terms and right-to-work checks.
NAS Silver — £950/yr
Everything in Bronze plus environmental and waste management, quality and corrective action, governance and conflicts of interest, competition law, pensions, working time and subcontractor approval.
NAS Gold — £1,150/yr
Everything in Silver plus 13 procurement modules: financial standing, anti-bribery and integrity disclosures, tax status, cyber security, ethical supply chain, sustainability and Building Safety Act readiness.
What You Get With NAS Certification
Certification goes beyond a certificate — it opens doors and gives you tools to grow.
Public Register Listing
Housing association and council buyers verify your NAS certificate on the free NAS register.
Gas & Heating Tenders
Access gas servicing, boiler installation, and heating maintenance opportunities across housing and FM.
Trade-Specific Questions
Your questionnaire includes questions for your trade, so the evidence you submit matches the work you actually do.
Assessor-Reviewed Evidence
An assessor checks your actual documents, so your certificate carries weight with buyers.
Expiry Reminders
Reminders before your NAS certificate, and dated documents you have submitted such as insurance, expire.
Annual Re-Assessment
Renewal includes a fresh evidence review, so buyers know your certificate reflects current documents.