| 1 | Supplier Legitimacy and Experience | Confirm the supplier’s legal registration, operating history, production capacity, export experience, and experience with the destination country. | - Business registration documents
- Verifiable project references
- Factory or workshop video inspection
- Written quotation with company details
| High Unverified intermediaries, incomplete documentation, or unrealistic delivery promises. | Request at least three completed project references and verify them independently before paying a deposit. |
| 2 | Structural Condition of the Container | Inspect the condition of the steel frame, corner castings, roof, floor, doors, and load-bearing members. Any alterations must not compromise structural integrity. | - Container inspection report
- Steel grade and thickness information
- Welding and reinforcement details
- Photographs before interior finishes are installed
| High Corrosion, hidden repairs, excessive cutting, or weak reinforcement around openings. | Use an independent structural professional to review drawings and inspect the unit before shipment whenever possible. |
| 3 | Compliance with Local Building Codes | The design should address local requirements for structural safety, fire protection, insulation, ventilation, electrical work, plumbing, accessibility, and energy performance. | - Code-compliant architectural and structural drawings
- Material certificates and test reports
- Permit support documents
- Written confirmation of design responsibility
| High A home may be transportable yet not legally suitable for residential occupation. | Ask a local architect, engineer, or building authority to confirm approval requirements before ordering. |
| 4 | Insulation and Climate Suitability | Select insulation, vapor control, windows, shading, heating, and cooling systems according to the destination climate zone. | - Insulation type and thickness
- Thermal performance calculations
- Window specification and glazing details
- Heating, ventilation, and air-conditioning schedule
| High Condensation, mold, overheating, cold floors, and excessive energy use. | Provide the exact site climate and request a condensation-control strategy, not only a nominal insulation value. |
| 5 | Material Quality and Durability | Evaluate steel protection, roof and wall systems, flooring, windows, sealants, fasteners, cabinetry, and exterior finishes for the intended service environment. | - Technical data sheets
- Corrosion-protection specification
- Fire and moisture performance information
- Sample board or approved material samples
| Medium Low-cost finishes may deteriorate quickly in coastal, humid, cold, or high-UV locations. | Compare materials by performance, warranty, maintenance needs, and replacement availability in the destination country. |
| 6 | Fabrication and Construction Quality | Check dimensional accuracy, weld quality, surface preparation, waterproofing, service penetrations, interior alignment, and protection of finishes during transport. | - Stage-by-stage quality inspection plan
- Factory acceptance checklist
- Welding and waterproofing inspection records
- Pre-shipment photographs and video
| High Defects may be concealed by finishes and become expensive to correct after delivery. | Include an independent pre-shipment inspection and define acceptance criteria in the purchase contract. |
| 7 | Customization and Design Flexibility | Confirm which changes are possible for layout, windows, doors, kitchens, bathrooms, electrical systems, finishes, accessibility, and renewable-energy preparation. | - Dimensioned floor plans and elevations
- Revision-controlled drawings
- Itemized customization schedule
- Written impact on price and delivery time
| Medium Late changes can create structural conflicts, additional fees, and approval delays. | Freeze the design before production and require written approval for every revision. |
| 8 | Utilities and Installation Scope | Clarify whether the price includes internal wiring, plumbing, fixtures, appliances, foundations, utility connections, site works, commissioning, and installation. | - Detailed inclusion and exclusion list
- Electrical load schedule
- Plumbing and drainage drawings
- Foundation and anchoring requirements
| High A low factory price can exclude major site, foundation, utility, crane, or installation costs. | Build a complete delivered-and-installed budget, including taxes, permits, transport, lifting, foundations, and local labor. |
| 9 | Shipping, Packaging, and Import Requirements | Confirm transport dimensions, gross weight, lifting points, packaging method, port handling, customs documents, import duties, and delivery terms. | - Packing list and commercial invoice
- Estimated shipping dimensions and weight
- Delivery-term statement
- Country-specific import documentation
| High Port storage, customs delays, transit damage, or equipment limitations at the site. | Confirm the route with a freight professional and inspect road access, crane access, turning radius, and site unloading conditions. |
| 10 | Contract, Warranty, and After-Sales Support | The contract should define specifications, milestones, payment protection, delivery dates, inspection rights, defect correction, warranty coverage, and dispute resolution. | - Signed technical specification
- Warranty terms and exclusions
- Spare-parts and maintenance procedure
- Escalation contact and response times
| High Verbal promises may be difficult to enforce across borders. | Use a written contract reviewed for the relevant jurisdiction and link final payment to documented acceptance. |