I have lost access to my ms visio program, and see that LO Draw can open vsd files, but I cannot find predefined walls, windows, doors, etc. as in Visio drawing tools. Do such things exist? And if so, where?
You could try to download some stencil here for example: http://www.vrt.com.au/downloads/vrt-network-equipment
Thanks for the pointer, but the shapes are all IT shapes, not house type shapes (doors, windows, exterior and interior walls, etc.).
Maybe some of this extensions it’s helpful
https://extensions.libreoffice.org/extensions?getCategories=Gallery%20Contents&getCompatibility=any
thanks - but none of these are architectural. And they are “art,” not building components.