BS 99001
Quality management for the built environment, built on ISO 9001
Overview
What is BS 99001?
BS 99001 is the British Standard for quality management in the built environment. It takes every requirement of ISO 9001 and adds sector-specific requirements for competence, design, risk and project delivery, giving construction and property organisations a quality management system that reflects how the industry really works.
Published by the British Standards Institution (BSI) in 2022, BS 99001 was developed in the wake of the Grenfell Tower tragedy to raise the bar on quality, safety and accountability across the sector. It is not a replacement for ISO 9001. Instead, it builds on it, so an organisation certified to BS 99001 is meeting the full ISO 9001 requirements plus the additional built environment requirements.
Who BS 99001 Is For
BS 99001 is designed for organisations that design, construct, maintain or operate built assets. That includes:
- Main contractors and specialist subcontractors
- Architects, engineers and other design consultants
- Manufacturers and suppliers of construction products
- Facilities management and asset management providers
- Housing providers, developers and client organisations
It is particularly relevant if you work on multi-party projects, where quality depends on how well several organisations coordinate, share information and hand over work.
How BS 99001 Differs from ISO 9001
ISO 9001 is written to apply to any organisation in any sector. BS 99001 keeps that framework and adds requirements that reflect the realities of construction and property work, including:
- Competence: clearer expectations for the skills, knowledge and experience of the people doing the work
- Design quality: control of design activity and design changes throughout a project
- Temporary works: managing temporary works as part of the quality system
- Inspection and test planning: planned, recorded checks at the right points in delivery
- Documented information: keeping accurate, accessible records across the life of an asset
- Multi-organisation projects: managing quality where several parties contribute to a single project
- Safety, sustainability and durability: considering how built assets perform over their whole life
BS 99001 and the Building Safety Act
The Building Safety Act 2022 introduced new duties around competence, accountability and record keeping for organisations working on buildings in England. BS 99001 is voluntary and is not a legal requirement, but it gives you a structured way to show that your processes, people and records support those duties. Many clients and assessment schemes now look for it as evidence of a mature, sector-aware approach to quality.
Already Certified to ISO 9001?
Most of the work is already done. If you hold ISO 9001 certification, your existing system forms the foundation for BS 99001. We start with a gap analysis against the additional built environment requirements, then help you close the gaps without rebuilding what already works. Many of our clients also run ISO 14001 and ISO 45001 alongside ISO 9001, and we can bring BS 99001 into the same integrated management system.
Certification and Accreditation
Certification to BS 99001 is carried out by an independent certification body, not by a consultancy. UKAS, the UK's national accreditation body, is currently running a pilot accreditation programme for BS 99001 with a small number of certification bodies. We help you choose a certification body that suits your needs and prepare your system for audit. Read more about why accreditation matters.
BS 99001:2022 is based on ISO 9001:2015. With ISO 9001 now being revised, BSI is expected to review BS 99001 in due course. Our standards updates and transition support keeps your system aligned when changes are published.
Why get certified
Key Benefits of BS 99001
Win More Construction Work
Show clients, principal contractors and assessment schemes that your quality system is built for the built environment, not adapted from a generic template.
Support Building Safety Duties
Give structure to the competence, accountability and record keeping expectations introduced by the Building Safety Act 2022.
Fewer Defects and Less Rework
Planned inspections, controlled design changes and clear handovers catch problems before they become costly to fix.
Build on What You Already Have
If you hold ISO 9001, BS 99001 extends your existing system rather than replacing it, keeping effort and cost proportionate.
How we work
Our Certification Process
Initial Conversation
We discuss your work, your projects and why you are considering BS 99001, whether that is a tender requirement, a client request or your own drive to improve.
Gap Analysis
We assess your current arrangements against BS 99001. If you already hold ISO 9001, we focus on the additional built environment requirements.
System Development
We build or extend your quality management system at the level of support you need, from guidance for your team through to a full system build.
Internal Audit and Management Review
We audit the system independently and support your management review, so you go into certification with evidence that it works.
Certification Audit
We help you select a certification body and support you through the stage 1 and stage 2 audits, including closing out any findings.
Ongoing Support
We keep your system current and audit-ready through surveillance visits, recertification and future revisions to the standard.
Common questions
Frequently Asked Questions
BS 99001 is a British Standard published by BSI in 2022 that sets out quality management system requirements for the built environment sector. It includes all of the requirements of ISO 9001 and adds sector-specific requirements covering areas such as competence, design, temporary works, inspection and test planning, and multi-organisation project delivery.
Ready to Build Your BS 99001 System?
Whether you are starting from scratch or upgrading an existing ISO 9001 system, we will give you a fixed-price quote after a short, no-obligation conversation.