How to Inspect Prefabricated Houses

When inspecting prefabricated houses, follow these steps and standards to ensure the house quality meets requirements:

1. Check Developer's Documents
   Verify that the developer possesses all necessary legal documents, including the Construction Project Quality Certificate, Residential User Manual, Residential Quality Guarantee, Comprehensive Acceptance Certificate for Real Estate Development Projects, and Construction Completion Acceptance Record. These documents are essential for the legal delivery of the house, and the absence of any may affect subsequent rights protection.

2. Inspect House Quality

   • Entry Door Inspection: The door surface should be clean without scratches or dents, with tight and flat corners and seams. The allowable deviation for door frame warping is 3mm, for door leaf warping is 2mm, for door leaf surface flatness is 2mm, and for the diagonal length between the door frame and door leaf is 3mm. The width of the door leaf's opposite seam and the vertical seam between the door leaf and door frame should be 1.5 to 2.5mm. The gap between the entry door of a rough-finished house and the floor should be no less than 3.5cm.
   • Windows and Doors Inspection: Ensure that the sealing strips are intact and secure, and that the glass is free from damage, chips, cracks, or poor sealing.
   • Water and Electricity Facilities Inspection: Confirm that water, electricity, and gas facilities are functioning properly, including switches, sockets, lighting fixtures, and water supply and drainage pipes.
   • Building Structure Inspection: Measure the floor height and verify it against the contract data. Use paper strip pressure tests to check the sealing of windows and doors, employ the tapping method to detect hollow tiles on walls and floors, and inspect walls and floors for flatness and cracks.
   • Public Area Inspection: Include the exterior facade, exterior wall tiles and paint (pay special attention to water leakage in the inner walls at the waistline), the appearance and trial functionality of unit doors, hallway width, handrail firmness, step flatness, and screen window integrity.

3. Area Verification
   Compare the actual measured interior area with the area stated in the purchase contract. If the total house area exceeds or falls short by no more than 3%, it is considered reasonable; any excess should be handled according to the contract to avoid loss of rights.

4. Record Issues and Request Rectification
   Document any issues found during the inspection in detail (with written descriptions and photos), and clarify the responsible party for rectification and the timeline for resolution to avoid verbal promises. For example, issues such as hollow tiles or water leakage require the developer to provide a written rectification plan.

5. Sign the House Handover Certificate
   After confirming that all items have passed inspection and there are no outstanding issues, sign the house handover certificate with the developer as legal proof of house delivery completion.