In Hangzhou, declaring a historic house requires consulting the urban planning administration bureau, and the real estate administration bureau.
As of 31 June 2011, there are 287 declared historic buildings in Hangzhou, proclaimed as five batches.
There are plans for a sixth batch that will include 51 historic houses.
47 buildings were declared to be the second batch of historic houses in Hangzhou, in July 2005.
The following information is provided by Real Estate Admiustration Bureau & Research Institute for Historic buildings in Hang zhou.