Prefab homes

Selecting the structural system depends on the local climate and building codes. Light Gauge Steel (LGS) is popular for its earthquake resistance (up to magnitude 9) and termite-proof properties. For extreme cold, SIPs (Structural Insulated Panels) offer superior thermal insulation. Always ensure the steel is hot-dip galvanized with a coating of at least 275g/m² to prevent corrosion in coastal or high-humidity areas.

Compliance is the most vital factor. You must verify that the supplier can meet local building codes such as AS/NZS 1170 for Australia, IBC/IRC for the US, or Eurocodes for the EU. Ensure all electrical and plumbing components carry certifications like UL, CE, or SAA. Request fire rating certificates (e.g., ASTM E84 or EN 13501) for wall panels and insulation materials to ensure safety and permit approval.

Check the U-value or R-value of the wall, roof, and floor systems. High-quality prefab homes use Rockwool, PU (Polyurethane), or Glasswool insulation. For energy efficiency, prioritize double or triple-glazed windows with Low-E coating and thermal break aluminum frames. This can reduce HVAC energy consumption by 30-50%.

Inquire if the supplier provides detailed 3D installation drawings, instructional videos, or on-site engineering supervision. A well-designed prefab home should feature bolt-and-nut connections rather than complex welding to reduce on-site labor costs. Confirm if the foundation plan is included in the package, as the buyer is typically responsible for the concrete slab.

The biggest risk is non-compliance with local zoning laws, which can lead to a total loss if the structure cannot be permitted. Another risk is shipping damage; since components are bulky, ensure the supplier uses professional sea-worthy packaging and 40HC or Flat Rack containers. Always use Trade Assurance or Letters of Credit (L/C) to secure your funds until shipping documents are verified.

Focus on the Total Landed Cost, not just the EXW price. Negotiate for spare parts (extra tiles, bolts, paint) to be included (usually 2-3% extra) to cover on-site breakage. Ask for a staged payment plan: typically 30% deposit, 60% after video inspection of production, and 10% after loading. For large projects, negotiate a prototype discount for the first unit.

Prefab homes are high-volume cargo. Verify the loading plan to ensure maximum container utilization. Ensure the supplier provides a detailed packing list where every component is numbered to match the assembly manual. For shipping to specific countries, confirm if the timber used in pallets or framing requires Fumigation Certificates to pass customs.

Request a factory audit report or a live video tour of the production line via Made-in-China.com's audited supplier services. Check for ISO 9001 and ISO 14001 certifications. Ask for case studies of previous exports to your specific country to prove they understand your local wind load and snow load requirements.