Renovation of Prefabricated Slab House Layout

The renovation of prefabricated slab house layouts should be carried out in combination with safety appraisal results and actual needs, through functional upgrades, structural reinforcement, or demolition and reconstruction. The specific steps are as follows:

I. Safety Appraisal as a Prerequisite for Renovation

According to the State Council's '15th Five-Year Plan for Urban Renewal', prefabricated slab houses must undergo professional safety appraisals before renovation to determine their safety grade (A-D).

• Grade A/B Houses: Structurally safe or partially hazardous, suitable for partial renovations such as repairing roof leaks and replacing aging pipelines.
• Grade C Houses: Partially dilapidated, requiring structural reinforcement through wall strengthening, floor slab reinforcement, and seismic upgrades to eliminate structural hazards.
• Grade D Houses: Overall dilapidated, requiring legal demolition and inclusion in urban renewal plans for reconstruction.

II. Functional Upgrade and Renovation Directions

Addressing common issues in prefabricated slab houses, optimizations can be made in the following directions:

• Sound Insulation Optimization: Use soundproof panels and double-glazed windows to reduce sound transmission through floors and walls, enhancing living comfort.
• Space Expansion: Remove non-load-bearing walls, merge small rooms, or expand kitchen and bathroom areas to improve cramped spaces. For example, transform narrow corridors into storage areas or multifunctional spaces.
• Age-Friendly Renovation: Install elevators and barrier-free access, adjust bathroom layouts (e.g., install grab bars and non-slip floor tiles) to meet the needs of elderly residents.
• Pipeline Renewal: Replace aging water supply, drainage, and gas pipelines to resolve leaks and blockages, enhancing usage safety.

III. Differentiated Disposal Strategies

Develop differentiated plans based on house grades:

• Grade A/B Houses: Focus on renovating old residential areas, primarily repairing public facilities such as roofs and pipelines, with the option to install elevators where feasible. For example, Yangzhou significantly improved resident experiences by installing elevators through old residential area renovations.
• Grade C Houses: Enhance safety through structural reinforcement projects, such as adding structural columns and ring beams for seismic resistance.
• Grade D Houses: Require demolition and reconstruction, with government subsidies covering 70% of the total investment, and residents able to withdraw housing provident funds to participate in funding.

IV. Resident Collaboration and Financial Support

• Application Process: Before renovation, residents should jointly apply with neighbors to community or housing and construction departments for safety appraisals to determine the renovation path.
• Funding Sources: Government subsidies cover 70% of the total investment for renovating Grade C/D dilapidated houses, with residents able to participate in funding through housing provident fund withdrawals and self-financing. For example, Liaoning will conduct key inspections of prefabricated slab houses in 2026, taking repair, reinforcement, or demolition measures based on appraisal results.

Renovations should balance safety and practicality, avoiding blind demolition or alteration of load-bearing structures to ensure compliance with building codes.