Removal of Prefabricated Floor Slabs in Houses

The removal of prefabricated floor slabs in houses must be carried out strictly in accordance with professional appraisals and planning. Only those that meet the conditions can be implemented, and legal compensation methods must be followed; unauthorized removal may lead to serious safety hazards.

I. Legal Conditions for Removing Prefabricated Floor Slabs

The removal of prefabricated floor slabs is not a common practice and must meet one of the following two types of conditions:

1. The house is appraised as a D-grade dilapidated building: After being inspected by a professional institution, the structural safety has reached a dangerous state, manifested by foundation settlement exceeding 5 centimeters, crack widths in load-bearing walls greater than 1 millimeter, and seismic resistance levels less than 70% of the current standards, etc..
2. Included in urban demolition planning: Due to the impact on major infrastructure construction (such as subways and elevated bridges) or the inability to withstand natural disasters (such as floods and earthquakes), the entire building needs to be demolished.

If the house is appraised as A-grade (structurally intact) or B-grade (the main structure is stable but there are local problems), it is usually improved through renovation (such as repairing the waterproof layer and replacing aging water and electricity pipelines) rather than demolition.

II. Compensation Methods for Those Meeting Demolition Conditions

1. Monetary compensation: A third-party appraisal company calculates the compensation amount by referring to the market prices of surrounding second-hand houses, covering the value of the house, decoration costs, moving expenses, rental expenses during the transition period, and incentive payments. The compensation standard is not less than 110% of the market price of surrounding commercial housing (for example, the appraisal price of Dong'an No.1 Village in Shanghai reached 135,000 yuan/㎡, which is 15% higher than the second-hand housing price in the same area).
2. Property rights exchange: Adjustments are made based on the area differences between the old and new houses, with refunds for excess payments and additional payments for shortfalls. It is divided into two forms: in-situ relocation and off-site resettlement. The location, area, house type, and delivery time of the resettlement housing need to be clarified (for example, residential buildings in Handan are replaced at a ratio of 1:1.1, and homestead houses can reach up to 1:1.2).
3. Housing voucher resettlement: Housing purchase vouchers are issued, which can be used to select and purchase real estate within the government-designated area and deduct the house price. Some areas provide additional subsidies. Attention should be paid to the validity period of the housing vouchers and the rules for making up payments for areas exceeding the voucher amount.

III. Risks and Precautions of Unauthorized Removal

If the house has not been appraised as a dilapidated building or included in the demolition planning, unauthorized removal of the prefabricated floor slabs may damage the main structure of the building. Prefabricated floor slabs usually contain steel bars or prestressed components that bear the load transfer function. Removal may lead to an imbalance in the structural load, causing serious consequences such as cracks in the building, settlement, and even collapse. Therefore, any modifications involving the original building structure (such as removing floor slabs or load-bearing walls) must first confirm the nature of the components and strictly follow the guidance of professional institutions.