dumb newby question: Is there a single website one can visit to do a search for an addon that does a desired effect? For just an example, to do a search for a modifier that adds window shutters to a wall.
thanks!
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From that example, you seem to be looking for kitbashes/models. Kitbashes are essentially prebuilt parts that are typically focused around a specific style or theme such as industrial, sci-fi, gothic etc. These can greatly speed up your workflow. You can try poking around for free ones, but unfortunately, most of the quality kitbash/models need to be paid for.
Another thing of note: you still need modelling experience to use them. I'm not aware of any addon/program that will essentially build an entire model for you.
One great source of free models is the Sketchup 3D Warehouse. You're going to need a third-party program to convert the SketchUp files to importable ones for Blender. i3DConverter works for that.
