Require NAS-Certified Contractors
In Your Social Housing Supply Chain.
Housing associations and registered providers carry legal and reputational responsibility for who they allow on their estates. NAS certification gives you independently assessed, publicly verifiable proof that your contractors meet structured UK compliance standards — not just self-declarations.
Why Require NAS From Your Contractors?
Social housing procurement teams are legally exposed when contractors don't comply. Modern Slavery, GDPR, Equality, and H&S obligations don't disappear when you outsource — they extend to your supply chain. Here's why NAS matters.
The Risk Without It
Why Requiring NAS Protects You
How NAS Works For You
Independent, evidence-based contractor certification you can rely on.
Instant Register Search
Verify any contractor on the free NAS public register in seconds. No login, no cost — just search by name or certificate number.
Independent Assessment
Every NAS certificate is backed by documented evidence reviewed by an independent assessor — not just a questionnaire.
Modern Slavery Covered
Silver and Gold tier contractors have independently evidenced their Modern Slavery Act 2015 compliance — a mandatory requirement for social housing supply chains.
22 Laws at Gold Tier
NAS Gold covers 22 UK laws and regulatory areas including GDPR, Equality Act, Environmental Protection Act, and Building Regulations.
Certificates Stay Current
NAS certificates are renewed annually. The public register always reflects current certification status — expired certificates are flagged immediately.
Procurement Due Diligence
Using NAS-certified contractors gives your procurement function documented, auditable evidence of supply chain due diligence.
Frequently Asked Questions
Are You a Contractor? See Your Trade
Find Verified Housing Association Contractors Instantly
NAS TradeLink gives procurement teams and main contractors direct access to a network of independently verified NAS-certified contractors. Post your requirement and receive ranked matches based on trade, location, certification tier, and real-time availability.