Approved production documents
The line should work from current approved drawings and specifications. Material substitutions need the required review rather than informal purchasing decisions.
Module identification should remain linked to inspection and production records throughout the plant.
Quality checkpoints
Framing, services, insulation, air sealing and concealed connections are best checked before finishes cover them. Ask how deficiencies are recorded and verified after correction.
Factory tours can be useful, but a tidy plant does not replace the formal inspection and certification system.
Pre-shipment review
Confirm finishes, fixtures, labels, moisture condition and transport protection before modules leave. Record photographs and unresolved deficiencies.
Clarify who has authority to delay shipment if the destination foundation is not ready or weather protection is inadequate.
Apply this guide to a real project
For factory production and quality control, create a dated project note tied to the destination address and current drawing revision. Identify the authority, designer, factory or contractor responsible for each unresolved item. Attach the written evidence for ‘Is production using the latest approved revision?’ and ‘How are concealed-work inspections recorded?’ rather than recording a verbal assurance.
Before a deposit, production release, shipment or final payment, convert every open question into a named action with an owner and deadline. Keep superseded drawings and decisions in the record so later inspectors, lenders, insurers and future owners can understand why the completed house differs from an early sales plan.
Questions to resolve before proceeding
- Is production using the latest approved revision?
- How are concealed-work inspections recorded?
- What pre-shipment inspection can the owner or representative attend?
- Who can stop release when deficiencies remain?