The coordinated plan set
Floor plans alone are not construction approval. The package may include structural calculations, foundation drawings, connection details, energy information, mechanical design and site plans.
Revision numbers and destination address should be consistent across the factory, foundation contractor and building department.
Professional responsibility
Architect and engineer requirements vary. Cross-border or out-of-state projects may need a professional licensed at the destination to review or take responsibility for specified portions.
Clarify whether the factory designer, local professional or both are responsible for interfaces such as foundations, module connections, garages and additions.
Field changes
Opening walls, moving stairs or changing structural connections after production can affect approved design. Even a practical site solution may require written review.
Maintain a change log and updated as-built records. Unapproved changes can complicate occupancy, warranty and resale.
Apply this guide to a real project
For approved plans, professional seals and engineering, 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 there one current approved plan set?’ and ‘Which professionals are licensed for the destination?’ 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 Keep superseded drawings and decisions in the record so later inspectors, lenders, insurers and future owners can understand why the completed house differs from an early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 there one current approved plan set?
- Which professionals are licensed for the destination?
- Who designs each factory-to-site interface?
- How are revised drawings distributed and approved?