I am a railway modeller, I can design and add basic textures in SketchUp, no problems.
I needed to up the texture levels [quellenform istructions][1] put me right so now Walls with real life textures are possible.
I made a couple of how too videos aimed at the newbie like myself on [my YouTube Channel][2]. I am trying to pass on the knowledge and the response was great.[![Test piece][3]][3].
My question is how do I convert a SVG/STL/DAE type file in Blender to a single mesh with no subdivisions so I can add displacement texture. I can then cut out windows using the Boolean method later once the texture is applied. I have Construction lines addon installed, would this help?[![Type of drawing I want to convert][4]][4]


  [1]: https://blender.stackexchange.com/questions/262934/cutting-a-hole-in-a-wall-with-displaced-texture
  [2]: https://www.youtube.com/watch?v=w7I8ax1KWjg&list=PL2Mz1GBib5AsbP06-fgANDgQS0Ehhy90S
  [3]: https://i.sstatic.net/4PwjI.jpg
  [4]: https://i.sstatic.net/cskre.png