Analysis of the Plan Form of Prefabricated Buildings Based on the Space Syntax—A Case Study of the Son Lei House in Macau

Son Lei House was the first building complex in Macau to adopt prefabricated building technology. Due to the early construction time, the building has gradually encountered problems such as ageing and insufficient facilities, poor environmental sanitation, and outstanding fire safety hazards. Based on Macau Iao Hon estate of Son Lei house as an example, depending on the quantitative analysis of space syntax in the old local-style dwelling houses building space zoning regularity of plane space form, each space in the old residential building is quantified by using nine indicators of the convex space of space syntax, five indicators of the field of viewshed analysis, and simulation of pedestrian stream, and suggestions for the plane optimisation of the building are put forward. The analysis process and optimisation suggestions apply to the same type of buildings, providing a reference for the urban renewal work of the government and enterprises.