Towards equal neighborhood evolution? A longitudinal study of soundscape and visual evolution and housing value fluctuations in shenzhen

The equitable evolution of neighborhood environments is closely linked to housing economics. However, the lack of quantitative and longitudinal evaluation methods makes it challenging to assess residents' neighborhood perceptions and achieve social inclusiveness goals. Using long-time series street view imagery, we quantified Shenzhen residents' multidimensional neighborhood perceptions before and after micro-renovations, including visual and soundscape dimensions, and revealed the association between perceptual evolution and the housing value. We identified inequitable results during neighborhood renewal: Neighborhoods with high soundscape scores are accompanied by low visual perception scores, and vice versa. The spatial inequality is reflected in the perceptual differentiation prevalent between urban and suburbs. Visual aspects showed a stable but weak relationship with housing value fluctuations, while soundscape aspects had a strong but more dynamic impact. The inequitable spatial evolution is facilitated by changes in residents' perceptions: expectations for positive audio-visual perceptions are increasing, but sensitivity for negative soundscape is decreasing. Meanwhile, residents are increasingly seeking diverse and rich visual neighborhood landscapes and atmospheres filled with human voices. This study provides quantitative support for the equitable evolution of neighborhoods and the economics of neighborhood landscapes. It offers a novel method for measuring multidimensional perceptions that can be applied to settlements worldwide.