Prefabricated Panel House Appraisal

The appraisal of prefabricated panel houses mainly involves the inspection of structural safety, public facilities, and unauthorized modifications, with professional institutions classifying them according to standards.

Inspection Content

• Structural Safety: Professional inspectors will focus on key components such as foundations, walls, floor slabs, and steel bars. Important indicators include whether there is settlement or cracking in the foundation, cracks or deformation in the walls, deflection in the floor slabs, and corrosion in the steel bars. For example, if there are through-cracks at the joints between prefabricated panels or if there is a noticeable springy feeling when stepping on the floor slabs, these are signs of structural insecurity and require special attention.
• Public Facilities: Check for issues such as aging pipelines, ineffective waterproofing, and blocked fire exits. Since many prefabricated panel buildings were constructed a long time ago, the original design standards for water and electricity pipelines can no longer meet current usage demands. As a result, problems like water leakage, power outages, and blocked sewers are relatively common. These issues not only affect living comfort but may also pose potential threats to the building structure.
• Unauthorized Modifications: Check whether anyone has擅自 (unauthorizedly) removed load-bearing walls, added structures on the roof, or converted balconies into kitchens or bathrooms. These actions can alter the original load-bearing structure of the house, making it more fragile and increasing safety hazards.

Appraisal Grades

After the inspection, a qualified professional appraisal institution will issue a report and classify the house into four grades according to the "Standard for Dangerous Building Appraisal" (JGJ 125 - 2016):

• Grade A: No dangerous components, and the structure can meet safety requirements for use. Such houses can be lived in with peace of mind.
• Grade B: Some components are dangerous, but it does not affect the safety of the main structure. Such houses require attention and timely repair and reinforcement.
• Grade C: Some load-bearing structures cannot meet safety requirements for use, and parts of the house are in a dangerous state. Such houses need to be renovated or reinforced as soon as possible.
• Grade D: The load-bearing structure can no longer meet safety requirements for use, and the entire house is in a dangerous state. Such houses must be immediately vacated and undergo demolition and reconstruction.

In addition, according to relevant policies, files will be established and dynamically updated for urban Grade C and D dangerous houses and non-complete houses. The demolition and reconstruction of Grade D dangerous houses will be accelerated, and Grade C and D dangerous houses and prefabricated panel houses will be renovated to ensure the safety of residents' living conditions.