I would like to create detailed plans of my house. Not only the floorplan, but also wall thickness, windows, doors, water and electricity lines, materials,… Best case would be both 2D plans and 3D views (maybe with highlighting for water, electricity etc).
Do you know of some open source software, that might be able to handle this task?
FreeCAD’s Arch/BIM workbench
Draw in 2D to create 3D walls. Position windows, doors and others in 3D. Some features like the roof or stairs have their own modules.
You can always fall back to one of the other many workbenches should you need something not part of a typical home (weird stairs, a detailed cupboard, …).
I could not find documentation easily in the past but it likely exists. For a video introduction the FCBLounge channel (YouTube) provides great visual tutorials.
I’ve documented part of our home in this to ideate remodeling. It can be used for pipework but I did not try that yet.