Are blueprint/drawings available to submit to the local HD prior to the sale?
No, but there are services that do that.
What is the GVWR of the trailer?
Is the fire suppression system charged and have a current certificate?
It is charged but has not been inspected recently.
Have the tires ever been replaced since its a 2013? No leaks?
They have not been replaced but are in good condition. No leaks, cracks or bulges.
Does it include the California Department of Housing and Community Development seal?
Has it been permitted by a Local/County Health Department?
It had been permitted in San Diego by a previous owner.