Turn Sustainability Into Your Competitive Edge for Every Event

ISO 20121:2024 Consultancy for Sustainable Events

Build an event sustainability management system that your clients, suppliers and auditors can trust.

For event agencies, organisers, venues, production partners and in-house event teams.

CGBC helps event agencies, organisers, venues and in-house event teams develop practical systems aligned with ISO 20121:2024 - from initial gap assessment and supplier controls to impact measurement, internal audit and independent certification readiness.

Whether you manage one major event or a year-round portfolio, we'll help you replace isolated sustainability initiatives with a consistent, evidence-based system for continual improvement.

Book a free ISO 20121 Scoping Call.

During the call, you will:

Discuss your events, organisational scope and client requirements
Understand the available conformity and certification routes
Identify the most important next steps for your organisation

No obligation. Speak directly with an experienced ISO 20121 consultant.

Secure Your Free Consultation

Who this is for:

This service is built for:

Event and experiential agencies
Corporate in-house event teams
Venue operators
Festival and exhibition organisers
Production and event-service suppliers
Associations and public-sector event owners

Why structured event sustainability now matters commercially

The events industry is under growing pressure to prove, not just promise, sustainability:

Clients and sponsors increasingly require sustainability credentials as a condition of contract
Venues, suppliers, and host cities are setting their own sustainability requirements
Attendees and the public expect visible action on waste, carbon, and social impact
Funders and regulators are asking for evidence, not intentions

This isn't just a reputational issue anymore - it's a commercial one.

The Business Problems ISO 20121 Solves

Lost bids and tenders - many corporate and public sector clients now shortlist only suppliers who can demonstrate a certified sustainability system
Inconsistent delivery - without a system, sustainability depends on individual staff effort rather than embedded process
Unmanaged supply chain risk - venues, caterers, and contractors can undo your sustainability commitments if they're not managed within your system
Unsubstantiated claims - "green" marketing without evidence exposes your brand to greenwashing accusations
No visibility on impact - without measurement, you can't show clients or your own board what's actually improved
Missed legacy opportunities - one-off events with no framework for social or community impact leave value on the table

Our Solution: A Practical, Certifiable Event Sustainability Management System

We don't hand you a checklist - we build you a system.

Planning & Governance
Embed sustainability objectives, roles, and responsibilities into how every event is scoped and resourced - not bolted on afterwards.
Supply Chain & Procurement
Bring venues, caterers, and suppliers into your sustainability commitments with clear criteria, engagement, and evidence trails.
Impact Measurement
Establish consistent tracking of waste, energy, water, and carbon across events, so performance can be reported and improved year on year.
Social Value & Legacy
Build in community engagement, accessibility, and inclusion, reflecting the standard's stronger focus on human rights and lasting legacy following its 2024 update.
Certification & Continuous Improvement
Move from self-declaration through supplier validation to full third-party certification - whichever level of assurance your clients and stakeholders require.

Together, this creates a system that clients, sponsors, and auditors can trust - for one event or an entire event portfolio.

What You Get

Depending on your starting point, we support organisations with:

ISO 20121 gap assessments against your current event operations
Design and implementation of your Event Sustainability Management System (ESMS)
Supplier and venue engagement frameworks
Carbon footprint measurement for individual events or full event calendars
Integration with existing ISO 14001, carbon footprint, or VSME reporting
Audit-ready documentation and support through to certification

This is not theoretical consulting - it's implementable, auditable, and built around how your events actually run.

Early movers benefit from:

A genuine competitive edge in tenders and pitches
Stronger, longer-term relationships with sponsors and venues
Lower cost and disruption than retrofitting sustainability under pressure
Real evidence to back up sustainability claims - protecting your brand

Late movers risk losing bids, facing greenwashing scrutiny, and scrambling to prove impact they never measured.

Book a Free Consultation

Start with an ISO 20121 Readiness Review

Our Readiness Review gives you clarity on:

Where your current event sustainability practice already meets the standard
Where the gaps are
What practical steps to take next

No sales pressure. Just a clear, expert view of your readiness.

Secure Your Free Consultation

Case Study

Verve, a values-driven agency, became the first agency in Ireland to achieve ISO 20121 certification over a decade ago — well ahead of the curve. Since then, CGBC has supported Verve's continued evolution across ISO 20121, ISO 14001, carbon footprint measurement, VSME reporting, and a Double Materiality Assessment, helping the agency turn sustainability leadership into a genuine competitive advantage with clients, suppliers, and talent alike.

Read full Case Study HERE