Show the customer what changed and why the original quote does not cover it. Provide a revised amount and explain the effect on timing, materials, and access. Record approval by message or signed variation before starting.

Pause before doing anything outside the accepted scope. Show the customer what you found, explain why it was not in the original quote, and give a separate price or range with the effect on timing. Get written approval from the person authorised to decide. If the extra work is unsafe or outside your qualifications, stop and refer it rather than treating consent as a substitute for competence.

If the customer declines the additional work, record that decision and explain any effect on the original job's safe completion.

Keep the original quote and a dated variation with the new task, cost, and timing. Get written approval from an authorised person. If urgent safety action is needed while the customer is unavailable, follow applicable professional rules and document the limited action.

If the customer declines, document the work completed and any safe next steps. Explain your variation process on a KobStore service page; create one before taking job-specific enquiries.