Analysts said the sometimes violent protests signalled that government measures designed to cool the red-hot property market were working and they warned developers in other parts of the country were starting to cut prices.
In the latest incident, some 200 home owners on Wednesday besieged the sales office for a project of leading developer Greenland Group, demanding refunds.
"We require a refund because the loss we are suffering now is too great for us to afford," the Shanghai Daily quoted a protestor as saying.
He paid 17,000 yuan ($2,678) per square metre last year and claimed the developer had cut the price by around 30 percent to boost sales.
In a another incident, 30 home owners stormed the sales office of a project of Hong Kong-listed China Overseas Land & In