| 1 | Assess Supplier Experience | Review the supplier’s years in operation, experience with similar building types, completed projects, engineering capability, and familiarity with local building regulations. | Prefer a documented track record with projects of comparable size, use, wind exposure, snow load, seismic conditions, and installation complexity. Be cautious when references are vague or cannot be independently verified. | Project portfolio, client references, business registration details, engineering credentials, inspection records, and examples of structural calculations. |
| 2 | Compare the Full Price | Compare the complete delivered cost rather than the advertised building-kit price. Identify whether design, engineering, foundation work, insulation, doors, windows, taxes, transport, erection, and site preparation are included. | A low initial quotation may exclude essential items. Request an itemized quotation with quantities, specifications, exclusions, allowances, currency, taxes, and change-order rates. | Detailed bill of quantities, scope-of-work schedule, payment milestones, freight quotation, installation estimate, and written list of exclusions. |
| 3 | Verify Structural and Material Quality | Confirm the steel grade, member sizes, connection design, corrosion protection, coating system, panel specifications, insulation performance, and compliance with the applicable building code. | The quotation should state measurable specifications such as steel grade, coating or galvanizing requirements, insulation thickness or thermal value, fastener type, and design loads. Avoid descriptions that use only terms such as “heavy duty” or “premium.” | Structural drawings, design-load schedule, material certificates, coating data sheets, welding or fabrication quality records, and product compliance documentation. |
| 4 | Read the Warranty Carefully | Separate structural warranties from warranties for roof panels, wall panels, paint or coating, doors, windows, and equipment. Check coverage, exclusions, claim procedures, and whether labor is included. | Warranty periods vary by component and material. A longer period is not automatically better if it excludes installation defects, corrosion caused by the site environment, maintenance failures, or consequential damage. | Signed warranty certificate, warranty duration by component, maintenance requirements, exclusions, response times, repair obligations, and transfer conditions. |
| 5 | Confirm Production and Delivery Terms | Clarify the date when production starts, the estimated fabrication period, shipping method, port or site delivery point, unloading responsibility, customs handling, and procedures for damaged or missing parts. | Delivery estimates should be tied to defined milestones, such as approved drawings, deposit receipt, production completion, and dispatch. Avoid open-ended terms such as “delivery as soon as possible.” | Incoterms or equivalent delivery terms, production schedule, packing list, shipping documents, delivery inspection procedure, and delay-compensation provisions. |
| 6 | Evaluate Installation and After-Sales Support | Determine who is responsible for site supervision, erection, equipment, safety procedures, corrections, spare parts, maintenance guidance, and post-installation inspections. | The contract should identify the installation party, responsibilities for foundations and tolerances, site-access requirements, acceptance criteria, and the process for resolving defects after handover. | Installation method statement, site-readiness checklist, safety plan, training materials, commissioning or handover checklist, service contacts, and spare-parts policy. |
| 7 | Check Contract and Payment Risk | Review governing law, technical scope, approved drawings, change-order controls, payment protection, cancellation terms, force-majeure language, dispute resolution, and ownership of design documents. | Payments should correspond to verifiable milestones. Avoid paying the full contract value before design approval, production, delivery, and satisfactory completion unless appropriate security is provided. | Final contract, approved specifications, drawing register, payment schedule, performance security or retention terms, change-order form, and dispute-resolution clause. |