GBW Retrofit Services provides independent PAS2035 coordination and compliance support for Energy Measure Installers delivering retrofit projects at scale.

We work alongside installers and delivery partners, providing experienced oversight across assessment review, design coordination, risk pathway management, and evidence consistency — helping ensure installations are compliant, defensible, and audit-ready.

Our role is not to deliver measures or replace internal teams, but to strengthen PAS2035 compliance around your installations, reduce risk, and support smooth project delivery where regulatory requirements and funding scrutiny are high.

By partnering with GBW, installers gain access to senior PAS2035 expertise that:
• Supports compliant delivery
• Protects signatories and funding claims
• Reduces audit and rework risk
• Integrates seamlessly with existing delivery models

We work collaboratively to support reliable, compliant retrofit delivery that stands up long after installation is complete.