We performed a regression analysis on both the median monthly sales data (Figure 4) as well as a mean monthly sales data for the Chelsea neighborhood and the rest of Manhattan as our control group. From the analysis, we estimated the pre-High Line median price for Chelsea was $814,000 which was $23,000 lower than that for Manhattan ($837,000). But the post-High Line median price in Chelsea was $1,384,000 which was $208,000 more compared to Manhattan ($1,176,000).