In your web browser, you can enter "city of vancouver, code" if in fact you are in the city. Give them a call. Beyond that your CCR's (available thru a title company) generally provides the individual property use guidelines for your neighborhood. Thats where it can say "no basket ball hoops" etc.
It is private property, ...but private property rights are generally subject to rules of the city/county, and then the CCR's Conditions, Covenants and Restrictions. Keep in mind there is also a difference between "parking" and "abandonded vehicle".