The 48.6km 36-station line will link Sci-Tech Island station in Yuhang with Xiangzhang Road in Xiaoshan, and is due to be completed in 2019. Hangzhou Metro Group is implementing the Yuan 35bn ($US 5.69bn) project as a public-private partnership (PPP).

The PPP model will also be used to build the initial phase of Line 6 from Xihhu to West Xiaoshan. Construction is due to begin on the 27km line next year and will take four years to complete.