Is it legal to collect the decoration deposit for the property? Where can I find relevant evidence?

There are no laws and regulations in the country that require property to collect decoration deposit. Let's see if there are any local regulations. The "Measures for the Administration of Interior Decoration" only clarifies that decoration management fees can be charged instead of decoration deposits.

Generally, you can charge the decoration enterprise. If you charge the owner without the support of local laws and regulations, you will be complained of arbitrary charges.