Neatmesh Sketch
Does it work on models I already have?
Yes. You can draw on the faces of any mesh object, Push/Pull them and cut doors and windows into existing walls. If the object has modifiers that change its mesh (Mirror, Array, Solidify and similar), apply or disable them first.
Which Blender versions are supported?
Blender 4.2 LTS and newer. Version 1.0.0 was tested on Blender 4.2 LTS, 4.5 LTS, 5.1 and 5.2.
Are the walls parametric?
No. Walls, doors and windows are ordinary Blender meshes, with no modifiers or booleans. After an opening is cut, you edit it like any other mesh, or use Undo.