Can I export a PDF from Blender? I would like to have a way of getting the design sheets(aka blueprints) like you can in CAD software.

Is there a plugin or addon or some form of python script that can export a PDF(vector screenshot) of the GUI(primarily the 3D view)?
SVGWriter for Blender/Freestyle


  The SVGWriter package provides a set of Python script files for authoring SVG documents with Blender and Freestyle.


Nowadays, SVGs are more portable than PDF, with support in all major browsers. There are also many free tools that can convert them to PDF if that's required. One such program is PDFAid.