Neijiang Prefabricated Housing

Neijiang prefabricated housing, represented by the 'Neijiang Large Panel Houses,' is a typical large-scale prefabricated panel assembly building located at 501-515 Kongjiang Road, Yangpu District, Shanghai. It is currently undergoing comprehensive renovation to enhance living quality.

I. Basic Information and Historical Background

The Neijiang Large Panel Houses were constructed in 1966 and consist of two 5-story buildings housing a total of 240 households. The structure employs large prefabricated panel assembly technology, with each building featuring 4 entrances, one staircase per 6 households, and shared kitchens and bathrooms among 3 households. Due to their long construction history, the buildings suffer from aging facilities, local safety hazards, and issues arising from shared kitchens and bathrooms, such as difficulties in using toilets, bathing, and cooking. Additionally, tangled electrical and network cables and cramped spaces necessitate urgent improvements in residents' living conditions.

II. Renovation Progress and Plan

On March 26, 2024, the Neijiang Large Panel Houses comprehensive renovation project achieved 100% pre-contract signing, marking the substantive start of the renovation. The renovation plan is designed differently based on the orientation of the units:

• South-facing units (160 households): Adopt a relocation and resettlement approach, retaining the original residential area.
• North-facing units (80 households): Offer options for unit relocation or monetary compensation, optimizing spatial layout by relocating north-facing residents.
  After renovation, the housing structure will be adjusted to provide individual kitchens and bathrooms for each unit. The number of building entrances will be reduced from the original 8 to 4, and the staircase-to-household ratio will become 1 staircase per 8 households. Through unit relocation, the originally cramped units will be transformed into a 'north-south通透' (north-south ventilated) layout, with an average increase in area of over 10 square meters per household. Elevators will also be installed, significantly enhancing living comfort.

III. Policy Support and Technical Measures

The latest policy in 2025 establishes the principle of 'one building, one policy,' avoiding a one-size-fits-all demolition approach and instead classifying and addressing buildings based on their actual conditions:

• Prefabricated buildings with intact main structures: Strengthen overall structural integrity through renovation and repair, employing techniques such as adding ring beams and constructional columns, adhering carbon fiber cloth, and casting composite layers.
• Functional upgrades: In conjunction with old residential area renovations, simultaneously advance projects such as elevator installation, water and electricity pipeline updates, and improvements in thermal insulation and soundproofing to comprehensively enhance living safety and convenience.

The renovation practice of the Neijiang Large Panel Houses provides a model for the sustainable renewal of prefabricated buildings, preserving historical architectural characteristics while addressing residents' living pain points through technical means and policy innovation.